./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer --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 1a9963030a13e3c679db84f21688cc66372a5ac3 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:05:58,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:05:58,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:05:58,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:05:58,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:05:58,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:05:58,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:05:58,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:05:58,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:05:58,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:05:58,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:05:58,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:05:58,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:05:58,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:05:58,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:05:58,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:05:58,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:05:58,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:05:58,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:05:58,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:05:58,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:05:58,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:05:58,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:05:58,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:05:58,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:05:58,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:05:58,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:05:58,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:05:58,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:05:58,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:05:58,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:05:58,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:05:58,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:05:58,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:05:58,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:05:58,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:05:58,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:05:58,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:05:58,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:05:58,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:05:58,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:05:58,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:05:58,686 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:05:58,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:05:58,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:05:58,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:05:58,688 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:05:58,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:05:58,689 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:05:58,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:05:58,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:05:58,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:05:58,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:05:58,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:05:58,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:05:58,691 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:05:58,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:05:58,692 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:05:58,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:05:58,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:05:58,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:05:58,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:05:58,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:05:58,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:05:58,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:05:58,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:05:58,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:05:58,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:05:58,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:05:58,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:05:58,695 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer 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 -> 1a9963030a13e3c679db84f21688cc66372a5ac3 [2019-11-15 23:05:58,741 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:05:58,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:05:58,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:05:58,755 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:05:58,755 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:05:58,756 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/../../sv-benchmarks/c/loop-lit/gj2007.i [2019-11-15 23:05:58,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/data/a5c4233d8/d2e25d328a224058a579a72735b037a8/FLAG68f1b8a46 [2019-11-15 23:05:59,188 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:05:59,188 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/sv-benchmarks/c/loop-lit/gj2007.i [2019-11-15 23:05:59,192 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/data/a5c4233d8/d2e25d328a224058a579a72735b037a8/FLAG68f1b8a46 [2019-11-15 23:05:59,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/data/a5c4233d8/d2e25d328a224058a579a72735b037a8 [2019-11-15 23:05:59,614 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:05:59,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:05:59,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:05:59,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:05:59,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:05:59,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:05:59" (1/1) ... [2019-11-15 23:05:59,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec3a3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:05:59, skipping insertion in model container [2019-11-15 23:05:59,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:05:59" (1/1) ... [2019-11-15 23:05:59,629 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:05:59,641 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:05:59,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:05:59,819 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:05:59,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:05:59,927 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:05:59,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:05:59 WrapperNode [2019-11-15 23:05:59,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:05:59,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:05:59,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:05:59,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:05:59,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:05:59" (1/1) ... [2019-11-15 23:05:59,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:05:59" (1/1) ... [2019-11-15 23:05:59,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:05:59,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:05:59,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:05:59,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:05:59,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:05:59" (1/1) ... [2019-11-15 23:05:59,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:05:59" (1/1) ... [2019-11-15 23:05:59,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:05:59" (1/1) ... [2019-11-15 23:05:59,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:05:59" (1/1) ... [2019-11-15 23:05:59,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:05:59" (1/1) ... [2019-11-15 23:05:59,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:05:59" (1/1) ... [2019-11-15 23:05:59,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:05:59" (1/1) ... [2019-11-15 23:05:59,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:05:59,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:05:59,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:05:59,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:05:59,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:05:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/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 [2019-11-15 23:06:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:06:00,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:06:00,206 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:06:00,206 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 23:06:00,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:06:00 BoogieIcfgContainer [2019-11-15 23:06:00,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:06:00,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:06:00,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:06:00,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:06:00,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:05:59" (1/3) ... [2019-11-15 23:06:00,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dcb4d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:06:00, skipping insertion in model container [2019-11-15 23:06:00,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:05:59" (2/3) ... [2019-11-15 23:06:00,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dcb4d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:06:00, skipping insertion in model container [2019-11-15 23:06:00,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:06:00" (3/3) ... [2019-11-15 23:06:00,215 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007.i [2019-11-15 23:06:00,223 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:06:00,229 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:06:00,239 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:06:00,258 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:06:00,258 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:06:00,258 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:06:00,258 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:06:00,258 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:06:00,258 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:06:00,259 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:06:00,259 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:06:00,271 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-15 23:06:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-15 23:06:00,275 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:00,276 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-15 23:06:00,278 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:00,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:00,282 INFO L82 PathProgramCache]: Analyzing trace with hash 30108868, now seen corresponding path program 1 times [2019-11-15 23:06:00,290 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:00,291 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319319482] [2019-11-15 23:06:00,291 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:00,291 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:00,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:00,366 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319319482] [2019-11-15 23:06:00,367 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:06:00,367 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:06:00,367 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490054338] [2019-11-15 23:06:00,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:06:00,371 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:00,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:06:00,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:06:00,384 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-15 23:06:00,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:00,394 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-11-15 23:06:00,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:06:00,395 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-15 23:06:00,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:00,402 INFO L225 Difference]: With dead ends: 19 [2019-11-15 23:06:00,402 INFO L226 Difference]: Without dead ends: 7 [2019-11-15 23:06:00,404 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:06:00,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-15 23:06:00,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-15 23:06:00,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 23:06:00,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-11-15 23:06:00,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2019-11-15 23:06:00,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:00,427 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-15 23:06:00,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:06:00,427 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2019-11-15 23:06:00,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-15 23:06:00,427 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:00,428 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-15 23:06:00,428 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:00,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:00,428 INFO L82 PathProgramCache]: Analyzing trace with hash 29810958, now seen corresponding path program 1 times [2019-11-15 23:06:00,428 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:00,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858853440] [2019-11-15 23:06:00,429 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:00,429 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:00,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:00,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858853440] [2019-11-15 23:06:00,450 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:06:00,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:06:00,450 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017962954] [2019-11-15 23:06:00,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:06:00,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:00,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:06:00,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:06:00,451 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 3 states. [2019-11-15 23:06:00,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:00,489 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2019-11-15 23:06:00,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:06:00,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-15 23:06:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:00,490 INFO L225 Difference]: With dead ends: 15 [2019-11-15 23:06:00,490 INFO L226 Difference]: Without dead ends: 9 [2019-11-15 23:06:00,491 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:06:00,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-15 23:06:00,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-15 23:06:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-15 23:06:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-15 23:06:00,493 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2019-11-15 23:06:00,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:00,493 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-15 23:06:00,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:06:00,494 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-15 23:06:00,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-15 23:06:00,494 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:00,494 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:06:00,494 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:00,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:00,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1366097711, now seen corresponding path program 1 times [2019-11-15 23:06:00,495 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:00,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784414089] [2019-11-15 23:06:00,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:00,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:00,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:00,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784414089] [2019-11-15 23:06:00,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421759591] [2019-11-15 23:06:00,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-15 23:06:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:00,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:06:00,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:00,598 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:06:00,598 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2019-11-15 23:06:00,598 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439027535] [2019-11-15 23:06:00,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:06:00,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:00,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:06:00,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:06:00,599 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2019-11-15 23:06:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:00,625 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-15 23:06:00,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:06:00,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-15 23:06:00,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:00,626 INFO L225 Difference]: With dead ends: 15 [2019-11-15 23:06:00,626 INFO L226 Difference]: Without dead ends: 11 [2019-11-15 23:06:00,627 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:06:00,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-15 23:06:00,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-15 23:06:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-15 23:06:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-15 23:06:00,629 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2019-11-15 23:06:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:00,629 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-15 23:06:00,630 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:06:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-15 23:06:00,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 23:06:00,630 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:00,630 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:06:00,833 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:00,833 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:00,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:00,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1492282070, now seen corresponding path program 1 times [2019-11-15 23:06:00,834 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:00,834 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295288067] [2019-11-15 23:06:00,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:00,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:00,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:00,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295288067] [2019-11-15 23:06:00,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598215976] [2019-11-15 23:06:00,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/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 [2019-11-15 23:06:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:00,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:06:00,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:00,902 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:00,903 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-15 23:06:00,903 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90494005] [2019-11-15 23:06:00,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:06:00,904 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:00,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:06:00,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:06:00,904 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2019-11-15 23:06:00,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:00,940 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-11-15 23:06:00,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:06:00,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-15 23:06:00,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:00,941 INFO L225 Difference]: With dead ends: 19 [2019-11-15 23:06:00,942 INFO L226 Difference]: Without dead ends: 12 [2019-11-15 23:06:00,942 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:06:00,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-15 23:06:00,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-15 23:06:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-15 23:06:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-11-15 23:06:00,945 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2019-11-15 23:06:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:00,945 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-15 23:06:00,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:06:00,946 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-11-15 23:06:00,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:06:00,946 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:00,946 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2019-11-15 23:06:01,147 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:01,147 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:01,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:01,147 INFO L82 PathProgramCache]: Analyzing trace with hash 2136142105, now seen corresponding path program 2 times [2019-11-15 23:06:01,148 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:01,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484585484] [2019-11-15 23:06:01,148 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:01,148 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:01,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:01,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484585484] [2019-11-15 23:06:01,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159595212] [2019-11-15 23:06:01,230 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/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 [2019-11-15 23:06:01,271 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:06:01,271 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:01,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:06:01,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:01,277 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:01,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-11-15 23:06:01,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845241319] [2019-11-15 23:06:01,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:06:01,278 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:01,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:06:01,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:06:01,279 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 6 states. [2019-11-15 23:06:01,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:01,306 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-15 23:06:01,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:06:01,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-15 23:06:01,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:01,307 INFO L225 Difference]: With dead ends: 23 [2019-11-15 23:06:01,307 INFO L226 Difference]: Without dead ends: 16 [2019-11-15 23:06:01,308 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:06:01,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-15 23:06:01,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-15 23:06:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-15 23:06:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-15 23:06:01,312 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2019-11-15 23:06:01,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:01,312 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-15 23:06:01,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:06:01,312 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-15 23:06:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 23:06:01,313 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:01,313 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2019-11-15 23:06:01,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:01,514 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:01,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:01,514 INFO L82 PathProgramCache]: Analyzing trace with hash -368533665, now seen corresponding path program 3 times [2019-11-15 23:06:01,514 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:01,514 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499848610] [2019-11-15 23:06:01,514 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:01,514 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:01,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:01,610 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:01,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499848610] [2019-11-15 23:06:01,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478611025] [2019-11-15 23:06:01,611 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/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 [2019-11-15 23:06:01,641 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-15 23:06:01,641 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:01,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:06:01,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-15 23:06:01,674 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:01,675 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 10 [2019-11-15 23:06:01,675 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868581403] [2019-11-15 23:06:01,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 23:06:01,675 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:01,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 23:06:01,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:06:01,676 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 10 states. [2019-11-15 23:06:01,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:01,745 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2019-11-15 23:06:01,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 23:06:01,746 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2019-11-15 23:06:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:01,747 INFO L225 Difference]: With dead ends: 30 [2019-11-15 23:06:01,748 INFO L226 Difference]: Without dead ends: 23 [2019-11-15 23:06:01,748 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:06:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-15 23:06:01,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-15 23:06:01,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 23:06:01,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-11-15 23:06:01,752 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2019-11-15 23:06:01,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:01,752 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-11-15 23:06:01,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 23:06:01,753 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-11-15 23:06:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-15 23:06:01,753 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:01,753 INFO L380 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1] [2019-11-15 23:06:01,956 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:01,956 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:01,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:01,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1336541098, now seen corresponding path program 4 times [2019-11-15 23:06:01,957 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:01,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466702040] [2019-11-15 23:06:01,957 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:01,957 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:01,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:02,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466702040] [2019-11-15 23:06:02,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457385492] [2019-11-15 23:06:02,082 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/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 [2019-11-15 23:06:02,111 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 23:06:02,111 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:02,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:06:02,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:06:02,122 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:02,122 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2019-11-15 23:06:02,122 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68509996] [2019-11-15 23:06:02,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 23:06:02,123 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:02,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 23:06:02,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-15 23:06:02,124 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 11 states. [2019-11-15 23:06:02,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:02,204 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2019-11-15 23:06:02,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-15 23:06:02,205 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2019-11-15 23:06:02,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:02,205 INFO L225 Difference]: With dead ends: 37 [2019-11-15 23:06:02,205 INFO L226 Difference]: Without dead ends: 28 [2019-11-15 23:06:02,206 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-15 23:06:02,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-15 23:06:02,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-15 23:06:02,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:06:02,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-15 23:06:02,214 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2019-11-15 23:06:02,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:02,214 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-15 23:06:02,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 23:06:02,214 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-15 23:06:02,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-15 23:06:02,215 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:02,216 INFO L380 BasicCegarLoop]: trace histogram [11, 9, 2, 1, 1, 1, 1, 1] [2019-11-15 23:06:02,416 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:02,416 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:02,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:02,417 INFO L82 PathProgramCache]: Analyzing trace with hash 825274035, now seen corresponding path program 5 times [2019-11-15 23:06:02,417 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:02,417 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166343910] [2019-11-15 23:06:02,417 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:02,417 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:02,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:02,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166343910] [2019-11-15 23:06:02,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060033341] [2019-11-15 23:06:02,576 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/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 [2019-11-15 23:06:02,622 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-15 23:06:02,622 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:02,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-15 23:06:02,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:06:02,642 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:02,643 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2019-11-15 23:06:02,643 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117003946] [2019-11-15 23:06:02,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-15 23:06:02,644 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:02,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-15 23:06:02,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-15 23:06:02,650 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 14 states. [2019-11-15 23:06:02,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:02,726 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2019-11-15 23:06:02,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 23:06:02,727 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2019-11-15 23:06:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:02,728 INFO L225 Difference]: With dead ends: 43 [2019-11-15 23:06:02,728 INFO L226 Difference]: Without dead ends: 34 [2019-11-15 23:06:02,728 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-15 23:06:02,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-15 23:06:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-15 23:06:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-15 23:06:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-11-15 23:06:02,734 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 27 [2019-11-15 23:06:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:02,737 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-11-15 23:06:02,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-15 23:06:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-11-15 23:06:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-15 23:06:02,739 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:02,739 INFO L380 BasicCegarLoop]: trace histogram [14, 12, 2, 1, 1, 1, 1, 1] [2019-11-15 23:06:02,947 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:02,947 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:02,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:02,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1798294788, now seen corresponding path program 6 times [2019-11-15 23:06:02,948 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:02,948 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034197087] [2019-11-15 23:06:02,948 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:02,948 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:02,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:03,182 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:03,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034197087] [2019-11-15 23:06:03,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718215094] [2019-11-15 23:06:03,183 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/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 [2019-11-15 23:06:03,226 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-11-15 23:06:03,227 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:03,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 23:06:03,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-11-15 23:06:03,299 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:03,299 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 20 [2019-11-15 23:06:03,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244241437] [2019-11-15 23:06:03,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-15 23:06:03,300 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:03,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-15 23:06:03,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-15 23:06:03,301 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 20 states. [2019-11-15 23:06:03,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:03,425 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2019-11-15 23:06:03,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-15 23:06:03,426 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 33 [2019-11-15 23:06:03,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:03,427 INFO L225 Difference]: With dead ends: 52 [2019-11-15 23:06:03,427 INFO L226 Difference]: Without dead ends: 43 [2019-11-15 23:06:03,428 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-15 23:06:03,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-15 23:06:03,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-11-15 23:06:03,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-15 23:06:03,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-11-15 23:06:03,433 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 33 [2019-11-15 23:06:03,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:03,434 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-11-15 23:06:03,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-15 23:06:03,437 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-11-15 23:06:03,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-15 23:06:03,441 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:03,441 INFO L380 BasicCegarLoop]: trace histogram [18, 15, 3, 1, 1, 1, 1, 1] [2019-11-15 23:06:03,642 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:03,642 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:03,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:03,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1978996342, now seen corresponding path program 7 times [2019-11-15 23:06:03,642 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:03,643 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131511751] [2019-11-15 23:06:03,643 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:03,643 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:03,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:03,954 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131511751] [2019-11-15 23:06:03,955 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957369226] [2019-11-15 23:06:03,955 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/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 [2019-11-15 23:06:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:03,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-15 23:06:04,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 80 proven. 240 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-15 23:06:04,015 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:04,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 20 [2019-11-15 23:06:04,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19342978] [2019-11-15 23:06:04,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-15 23:06:04,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:04,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-15 23:06:04,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-15 23:06:04,017 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 21 states. [2019-11-15 23:06:04,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:04,128 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-15 23:06:04,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-15 23:06:04,129 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 41 [2019-11-15 23:06:04,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:04,130 INFO L225 Difference]: With dead ends: 61 [2019-11-15 23:06:04,130 INFO L226 Difference]: Without dead ends: 50 [2019-11-15 23:06:04,131 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-15 23:06:04,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-15 23:06:04,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-11-15 23:06:04,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-15 23:06:04,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2019-11-15 23:06:04,138 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 41 [2019-11-15 23:06:04,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:04,138 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2019-11-15 23:06:04,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-15 23:06:04,139 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2019-11-15 23:06:04,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-15 23:06:04,140 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:04,140 INFO L380 BasicCegarLoop]: trace histogram [22, 19, 3, 1, 1, 1, 1, 1] [2019-11-15 23:06:04,343 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:04,343 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:04,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:04,344 INFO L82 PathProgramCache]: Analyzing trace with hash -388925930, now seen corresponding path program 8 times [2019-11-15 23:06:04,344 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:04,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881642392] [2019-11-15 23:06:04,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:04,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:04,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:04,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881642392] [2019-11-15 23:06:04,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324358092] [2019-11-15 23:06:04,697 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/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 [2019-11-15 23:06:04,742 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:06:04,742 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:04,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-15 23:06:04,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 100 proven. 380 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-15 23:06:04,760 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:04,760 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 24 [2019-11-15 23:06:04,760 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543670227] [2019-11-15 23:06:04,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-15 23:06:04,761 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:04,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-15 23:06:04,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-11-15 23:06:04,762 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 25 states. [2019-11-15 23:06:04,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:04,867 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2019-11-15 23:06:04,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-15 23:06:04,867 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 49 [2019-11-15 23:06:04,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:04,868 INFO L225 Difference]: With dead ends: 69 [2019-11-15 23:06:04,868 INFO L226 Difference]: Without dead ends: 58 [2019-11-15 23:06:04,869 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-11-15 23:06:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-15 23:06:04,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-11-15 23:06:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-15 23:06:04,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2019-11-15 23:06:04,875 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 49 [2019-11-15 23:06:04,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:04,875 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2019-11-15 23:06:04,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-15 23:06:04,876 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2019-11-15 23:06:04,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-15 23:06:04,877 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:04,877 INFO L380 BasicCegarLoop]: trace histogram [26, 23, 3, 1, 1, 1, 1, 1] [2019-11-15 23:06:05,080 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:05,080 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:05,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:05,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1548175710, now seen corresponding path program 9 times [2019-11-15 23:06:05,081 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:05,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729922456] [2019-11-15 23:06:05,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:05,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:05,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:05,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729922456] [2019-11-15 23:06:05,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249751342] [2019-11-15 23:06:05,581 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/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 [2019-11-15 23:06:05,618 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-11-15 23:06:05,618 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:05,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 23:06:05,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 161 proven. 9 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2019-11-15 23:06:05,748 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:05,748 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 6] total 33 [2019-11-15 23:06:05,748 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982746055] [2019-11-15 23:06:05,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-11-15 23:06:05,749 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:05,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-11-15 23:06:05,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-11-15 23:06:05,750 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 33 states. [2019-11-15 23:06:05,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:05,887 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2019-11-15 23:06:05,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-11-15 23:06:05,887 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 57 [2019-11-15 23:06:05,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:05,888 INFO L225 Difference]: With dead ends: 80 [2019-11-15 23:06:05,888 INFO L226 Difference]: Without dead ends: 69 [2019-11-15 23:06:05,889 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-11-15 23:06:05,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-15 23:06:05,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2019-11-15 23:06:05,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-15 23:06:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2019-11-15 23:06:05,899 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 57 [2019-11-15 23:06:05,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:05,899 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2019-11-15 23:06:05,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-11-15 23:06:05,899 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2019-11-15 23:06:05,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-15 23:06:05,900 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:05,900 INFO L380 BasicCegarLoop]: trace histogram [31, 27, 4, 1, 1, 1, 1, 1] [2019-11-15 23:06:06,100 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:06,101 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:06,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:06,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1150619149, now seen corresponding path program 10 times [2019-11-15 23:06:06,101 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:06,101 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211229404] [2019-11-15 23:06:06,101 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:06,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:06,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:06,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211229404] [2019-11-15 23:06:06,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252308810] [2019-11-15 23:06:06,667 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:06,707 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 23:06:06,707 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:06,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-15 23:06:06,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:06,735 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 196 proven. 756 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-15 23:06:06,735 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:06,735 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 29] total 33 [2019-11-15 23:06:06,736 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396206058] [2019-11-15 23:06:06,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-15 23:06:06,736 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:06,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-15 23:06:06,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-11-15 23:06:06,738 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 34 states. [2019-11-15 23:06:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:06,925 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2019-11-15 23:06:06,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-15 23:06:06,926 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 67 [2019-11-15 23:06:06,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:06,927 INFO L225 Difference]: With dead ends: 91 [2019-11-15 23:06:06,927 INFO L226 Difference]: Without dead ends: 78 [2019-11-15 23:06:06,928 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-11-15 23:06:06,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-15 23:06:06,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2019-11-15 23:06:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-15 23:06:06,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2019-11-15 23:06:06,936 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 67 [2019-11-15 23:06:06,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:06,936 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2019-11-15 23:06:06,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-15 23:06:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2019-11-15 23:06:06,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-15 23:06:06,938 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:06,938 INFO L380 BasicCegarLoop]: trace histogram [36, 32, 4, 1, 1, 1, 1, 1] [2019-11-15 23:06:07,141 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:07,141 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:07,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:07,142 INFO L82 PathProgramCache]: Analyzing trace with hash 351932674, now seen corresponding path program 11 times [2019-11-15 23:06:07,142 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:07,142 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228050037] [2019-11-15 23:06:07,142 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:07,142 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:07,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:07,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228050037] [2019-11-15 23:06:07,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726569931] [2019-11-15 23:06:07,844 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:07,914 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2019-11-15 23:06:07,914 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:07,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-15 23:06:07,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 231 proven. 1056 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-15 23:06:07,945 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:07,945 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 34] total 38 [2019-11-15 23:06:07,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995967334] [2019-11-15 23:06:07,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-11-15 23:06:07,947 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:07,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-11-15 23:06:07,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-11-15 23:06:07,948 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 39 states. [2019-11-15 23:06:08,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:08,152 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2019-11-15 23:06:08,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-11-15 23:06:08,153 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 77 [2019-11-15 23:06:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:08,154 INFO L225 Difference]: With dead ends: 101 [2019-11-15 23:06:08,154 INFO L226 Difference]: Without dead ends: 88 [2019-11-15 23:06:08,155 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-11-15 23:06:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-15 23:06:08,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2019-11-15 23:06:08,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-15 23:06:08,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2019-11-15 23:06:08,162 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 77 [2019-11-15 23:06:08,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:08,162 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2019-11-15 23:06:08,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-11-15 23:06:08,162 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2019-11-15 23:06:08,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-15 23:06:08,163 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:08,163 INFO L380 BasicCegarLoop]: trace histogram [41, 37, 4, 1, 1, 1, 1, 1] [2019-11-15 23:06:08,374 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:08,374 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:08,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:08,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1926555985, now seen corresponding path program 12 times [2019-11-15 23:06:08,375 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:08,375 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893611253] [2019-11-15 23:06:08,375 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:08,375 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:08,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:09,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893611253] [2019-11-15 23:06:09,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526581053] [2019-11-15 23:06:09,388 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:09,432 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-15 23:06:09,432 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:09,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 23:06:09,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 333 proven. 16 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2019-11-15 23:06:09,653 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:09,654 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 7] total 49 [2019-11-15 23:06:09,654 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879695227] [2019-11-15 23:06:09,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 49 states [2019-11-15 23:06:09,656 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:09,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2019-11-15 23:06:09,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2019-11-15 23:06:09,658 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 49 states. [2019-11-15 23:06:09,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:09,897 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2019-11-15 23:06:09,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-11-15 23:06:09,901 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 87 [2019-11-15 23:06:09,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:09,902 INFO L225 Difference]: With dead ends: 114 [2019-11-15 23:06:09,902 INFO L226 Difference]: Without dead ends: 101 [2019-11-15 23:06:09,903 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2019-11-15 23:06:09,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-15 23:06:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2019-11-15 23:06:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-15 23:06:09,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2019-11-15 23:06:09,911 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 87 [2019-11-15 23:06:09,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:09,911 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2019-11-15 23:06:09,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 49 states. [2019-11-15 23:06:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2019-11-15 23:06:09,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-15 23:06:09,913 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:09,913 INFO L380 BasicCegarLoop]: trace histogram [47, 42, 5, 1, 1, 1, 1, 1] [2019-11-15 23:06:10,116 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:10,116 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:10,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:10,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1558049499, now seen corresponding path program 13 times [2019-11-15 23:06:10,117 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:10,117 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81973618] [2019-11-15 23:06:10,117 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:10,117 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:10,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:11,143 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81973618] [2019-11-15 23:06:11,143 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932989771] [2019-11-15 23:06:11,143 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:11,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 44 conjunts are in the unsatisfiable core [2019-11-15 23:06:11,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 387 proven. 1806 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-15 23:06:11,229 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:11,229 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 44] total 49 [2019-11-15 23:06:11,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544322315] [2019-11-15 23:06:11,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-11-15 23:06:11,230 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:11,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-11-15 23:06:11,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2019-11-15 23:06:11,232 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand 50 states. [2019-11-15 23:06:11,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:11,405 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2019-11-15 23:06:11,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-11-15 23:06:11,405 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 99 [2019-11-15 23:06:11,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:11,406 INFO L225 Difference]: With dead ends: 127 [2019-11-15 23:06:11,406 INFO L226 Difference]: Without dead ends: 112 [2019-11-15 23:06:11,407 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2019-11-15 23:06:11,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-15 23:06:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-11-15 23:06:11,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-15 23:06:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 117 transitions. [2019-11-15 23:06:11,417 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 117 transitions. Word has length 99 [2019-11-15 23:06:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:11,418 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 117 transitions. [2019-11-15 23:06:11,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-11-15 23:06:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 117 transitions. [2019-11-15 23:06:11,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-15 23:06:11,420 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:11,420 INFO L380 BasicCegarLoop]: trace histogram [53, 48, 5, 1, 1, 1, 1, 1] [2019-11-15 23:06:11,623 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:11,623 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:11,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:11,623 INFO L82 PathProgramCache]: Analyzing trace with hash 770930935, now seen corresponding path program 14 times [2019-11-15 23:06:11,623 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:11,623 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464314341] [2019-11-15 23:06:11,624 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:11,624 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:11,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:12,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464314341] [2019-11-15 23:06:12,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717544408] [2019-11-15 23:06:12,882 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:12,935 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:06:12,935 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:12,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 50 conjunts are in the unsatisfiable core [2019-11-15 23:06:12,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 441 proven. 2352 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-15 23:06:12,969 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:12,969 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 50] total 55 [2019-11-15 23:06:12,969 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297372924] [2019-11-15 23:06:12,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 56 states [2019-11-15 23:06:12,970 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:12,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2019-11-15 23:06:12,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2019-11-15 23:06:12,971 INFO L87 Difference]: Start difference. First operand 112 states and 117 transitions. Second operand 56 states. [2019-11-15 23:06:13,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:13,177 INFO L93 Difference]: Finished difference Result 131 states and 143 transitions. [2019-11-15 23:06:13,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-11-15 23:06:13,177 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 111 [2019-11-15 23:06:13,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:13,178 INFO L225 Difference]: With dead ends: 131 [2019-11-15 23:06:13,178 INFO L226 Difference]: Without dead ends: 116 [2019-11-15 23:06:13,179 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2019-11-15 23:06:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-11-15 23:06:13,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2019-11-15 23:06:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-11-15 23:06:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2019-11-15 23:06:13,185 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 111 [2019-11-15 23:06:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:13,185 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2019-11-15 23:06:13,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 56 states. [2019-11-15 23:06:13,186 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2019-11-15 23:06:13,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-15 23:06:13,187 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:13,187 INFO L380 BasicCegarLoop]: trace histogram [55, 50, 5, 1, 1, 1, 1, 1] [2019-11-15 23:06:13,390 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:13,390 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:13,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:13,391 INFO L82 PathProgramCache]: Analyzing trace with hash 9489469, now seen corresponding path program 15 times [2019-11-15 23:06:13,391 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:13,391 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110239152] [2019-11-15 23:06:13,391 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:13,391 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:13,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:14,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110239152] [2019-11-15 23:06:14,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470901331] [2019-11-15 23:06:14,676 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:14,724 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2019-11-15 23:06:14,725 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:14,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:06:14,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 550 proven. 25 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2019-11-15 23:06:14,749 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:14,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 8] total 58 [2019-11-15 23:06:14,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552491549] [2019-11-15 23:06:14,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 58 states [2019-11-15 23:06:14,750 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:14,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2019-11-15 23:06:14,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2019-11-15 23:06:14,752 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand 58 states. [2019-11-15 23:06:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:14,961 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2019-11-15 23:06:14,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-11-15 23:06:14,961 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 115 [2019-11-15 23:06:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:14,962 INFO L225 Difference]: With dead ends: 123 [2019-11-15 23:06:14,963 INFO L226 Difference]: Without dead ends: 119 [2019-11-15 23:06:14,964 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2019-11-15 23:06:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-11-15 23:06:14,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2019-11-15 23:06:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-11-15 23:06:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 124 transitions. [2019-11-15 23:06:14,969 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 124 transitions. Word has length 115 [2019-11-15 23:06:14,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:14,970 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 124 transitions. [2019-11-15 23:06:14,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 58 states. [2019-11-15 23:06:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 124 transitions. [2019-11-15 23:06:14,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-15 23:06:14,972 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:14,972 INFO L380 BasicCegarLoop]: trace histogram [56, 50, 6, 1, 1, 1, 1, 1] [2019-11-15 23:06:15,175 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:15,175 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:15,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:15,176 INFO L82 PathProgramCache]: Analyzing trace with hash 581634882, now seen corresponding path program 16 times [2019-11-15 23:06:15,176 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:15,176 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787614733] [2019-11-15 23:06:15,176 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:15,176 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:15,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:16,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787614733] [2019-11-15 23:06:16,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225516349] [2019-11-15 23:06:16,738 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:16,802 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 23:06:16,802 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:16,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 58 conjunts are in the unsatisfiable core [2019-11-15 23:06:16,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:16,838 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:16,839 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2019-11-15 23:06:16,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783852064] [2019-11-15 23:06:16,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-11-15 23:06:16,839 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:16,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-11-15 23:06:16,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2019-11-15 23:06:16,841 INFO L87 Difference]: Start difference. First operand 118 states and 124 transitions. Second operand 59 states. [2019-11-15 23:06:17,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:17,080 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2019-11-15 23:06:17,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-11-15 23:06:17,080 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 117 [2019-11-15 23:06:17,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:17,081 INFO L225 Difference]: With dead ends: 125 [2019-11-15 23:06:17,081 INFO L226 Difference]: Without dead ends: 121 [2019-11-15 23:06:17,082 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2019-11-15 23:06:17,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-11-15 23:06:17,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2019-11-15 23:06:17,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-11-15 23:06:17,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 127 transitions. [2019-11-15 23:06:17,087 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 127 transitions. Word has length 117 [2019-11-15 23:06:17,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:17,087 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 127 transitions. [2019-11-15 23:06:17,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-11-15 23:06:17,088 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 127 transitions. [2019-11-15 23:06:17,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-15 23:06:17,089 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:17,089 INFO L380 BasicCegarLoop]: trace histogram [57, 50, 7, 1, 1, 1, 1, 1] [2019-11-15 23:06:17,292 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:17,292 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:17,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:17,292 INFO L82 PathProgramCache]: Analyzing trace with hash 657562887, now seen corresponding path program 17 times [2019-11-15 23:06:17,292 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:17,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110319579] [2019-11-15 23:06:17,293 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:17,293 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:17,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:18,723 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110319579] [2019-11-15 23:06:18,723 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036360862] [2019-11-15 23:06:18,723 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:18,810 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2019-11-15 23:06:18,810 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:18,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-15 23:06:18,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 1653 proven. 784 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2019-11-15 23:06:19,931 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:19,931 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 31] total 81 [2019-11-15 23:06:19,931 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532948364] [2019-11-15 23:06:19,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 81 states [2019-11-15 23:06:19,931 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:19,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2019-11-15 23:06:19,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2019-11-15 23:06:19,934 INFO L87 Difference]: Start difference. First operand 120 states and 127 transitions. Second operand 81 states. [2019-11-15 23:06:20,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:20,292 INFO L93 Difference]: Finished difference Result 169 states and 220 transitions. [2019-11-15 23:06:20,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2019-11-15 23:06:20,295 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 119 [2019-11-15 23:06:20,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:20,296 INFO L225 Difference]: With dead ends: 169 [2019-11-15 23:06:20,297 INFO L226 Difference]: Without dead ends: 165 [2019-11-15 23:06:20,299 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2019-11-15 23:06:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-11-15 23:06:20,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2019-11-15 23:06:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2019-11-15 23:06:20,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2019-11-15 23:06:20,305 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 119 [2019-11-15 23:06:20,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:20,306 INFO L462 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2019-11-15 23:06:20,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 81 states. [2019-11-15 23:06:20,306 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2019-11-15 23:06:20,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-15 23:06:20,307 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:20,307 INFO L380 BasicCegarLoop]: trace histogram [79, 50, 29, 1, 1, 1, 1, 1] [2019-11-15 23:06:20,508 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:20,508 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:20,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:20,508 INFO L82 PathProgramCache]: Analyzing trace with hash 244345781, now seen corresponding path program 18 times [2019-11-15 23:06:20,508 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:20,508 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115165269] [2019-11-15 23:06:20,508 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:20,509 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:20,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:23,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 6241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:23,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115165269] [2019-11-15 23:06:23,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754157211] [2019-11-15 23:06:23,007 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:23,136 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2019-11-15 23:06:23,137 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:23,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-15 23:06:23,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 3157 proven. 1444 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2019-11-15 23:06:23,722 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:23,722 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 41] total 91 [2019-11-15 23:06:23,722 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735039742] [2019-11-15 23:06:23,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 91 states [2019-11-15 23:06:23,722 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:23,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2019-11-15 23:06:23,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2019-11-15 23:06:23,725 INFO L87 Difference]: Start difference. First operand 164 states and 193 transitions. Second operand 91 states. [2019-11-15 23:06:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:24,305 INFO L93 Difference]: Finished difference Result 189 states and 238 transitions. [2019-11-15 23:06:24,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2019-11-15 23:06:24,305 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 163 [2019-11-15 23:06:24,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:24,307 INFO L225 Difference]: With dead ends: 189 [2019-11-15 23:06:24,307 INFO L226 Difference]: Without dead ends: 185 [2019-11-15 23:06:24,308 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2019-11-15 23:06:24,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-11-15 23:06:24,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2019-11-15 23:06:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2019-11-15 23:06:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 223 transitions. [2019-11-15 23:06:24,314 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 223 transitions. Word has length 163 [2019-11-15 23:06:24,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:24,315 INFO L462 AbstractCegarLoop]: Abstraction has 184 states and 223 transitions. [2019-11-15 23:06:24,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 91 states. [2019-11-15 23:06:24,315 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 223 transitions. [2019-11-15 23:06:24,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-11-15 23:06:24,316 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:24,316 INFO L380 BasicCegarLoop]: trace histogram [89, 50, 39, 1, 1, 1, 1, 1] [2019-11-15 23:06:24,519 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:24,520 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:24,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:24,520 INFO L82 PathProgramCache]: Analyzing trace with hash 199000487, now seen corresponding path program 19 times [2019-11-15 23:06:24,520 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:24,520 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954219638] [2019-11-15 23:06:24,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:24,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:24,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 7921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:27,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954219638] [2019-11-15 23:06:27,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106291235] [2019-11-15 23:06:27,831 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:27,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 91 conjunts are in the unsatisfiable core [2019-11-15 23:06:27,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 7921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:27,983 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:27,983 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2019-11-15 23:06:27,984 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200077121] [2019-11-15 23:06:27,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 92 states [2019-11-15 23:06:27,984 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:27,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2019-11-15 23:06:27,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2019-11-15 23:06:27,985 INFO L87 Difference]: Start difference. First operand 184 states and 223 transitions. Second operand 92 states. [2019-11-15 23:06:28,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:28,391 INFO L93 Difference]: Finished difference Result 191 states and 232 transitions. [2019-11-15 23:06:28,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2019-11-15 23:06:28,391 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 183 [2019-11-15 23:06:28,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:28,392 INFO L225 Difference]: With dead ends: 191 [2019-11-15 23:06:28,392 INFO L226 Difference]: Without dead ends: 187 [2019-11-15 23:06:28,393 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2019-11-15 23:06:28,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2019-11-15 23:06:28,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2019-11-15 23:06:28,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2019-11-15 23:06:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 226 transitions. [2019-11-15 23:06:28,397 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 226 transitions. Word has length 183 [2019-11-15 23:06:28,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:28,397 INFO L462 AbstractCegarLoop]: Abstraction has 186 states and 226 transitions. [2019-11-15 23:06:28,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 92 states. [2019-11-15 23:06:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 226 transitions. [2019-11-15 23:06:28,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-11-15 23:06:28,398 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:28,399 INFO L380 BasicCegarLoop]: trace histogram [90, 50, 40, 1, 1, 1, 1, 1] [2019-11-15 23:06:28,600 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:28,600 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:28,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:28,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1981870548, now seen corresponding path program 20 times [2019-11-15 23:06:28,601 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:28,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330573834] [2019-11-15 23:06:28,601 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:28,601 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:28,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:31,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330573834] [2019-11-15 23:06:31,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551964134] [2019-11-15 23:06:31,803 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:31,902 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:06:31,902 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:31,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 92 conjunts are in the unsatisfiable core [2019-11-15 23:06:31,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:31,950 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:31,951 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2019-11-15 23:06:31,951 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480376535] [2019-11-15 23:06:31,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 93 states [2019-11-15 23:06:31,952 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:31,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2019-11-15 23:06:31,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2019-11-15 23:06:31,953 INFO L87 Difference]: Start difference. First operand 186 states and 226 transitions. Second operand 93 states. [2019-11-15 23:06:32,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:32,513 INFO L93 Difference]: Finished difference Result 193 states and 235 transitions. [2019-11-15 23:06:32,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2019-11-15 23:06:32,513 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 185 [2019-11-15 23:06:32,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:32,515 INFO L225 Difference]: With dead ends: 193 [2019-11-15 23:06:32,515 INFO L226 Difference]: Without dead ends: 189 [2019-11-15 23:06:32,517 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2019-11-15 23:06:32,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2019-11-15 23:06:32,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2019-11-15 23:06:32,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-11-15 23:06:32,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 229 transitions. [2019-11-15 23:06:32,522 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 229 transitions. Word has length 185 [2019-11-15 23:06:32,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:32,523 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 229 transitions. [2019-11-15 23:06:32,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 93 states. [2019-11-15 23:06:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 229 transitions. [2019-11-15 23:06:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-11-15 23:06:32,524 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:32,524 INFO L380 BasicCegarLoop]: trace histogram [91, 50, 41, 1, 1, 1, 1, 1] [2019-11-15 23:06:32,724 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:32,725 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:32,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:32,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1854894735, now seen corresponding path program 21 times [2019-11-15 23:06:32,725 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:32,725 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68655515] [2019-11-15 23:06:32,725 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:32,725 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:32,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 8281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:36,010 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68655515] [2019-11-15 23:06:36,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860597304] [2019-11-15 23:06:36,011 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:36,168 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 84 check-sat command(s) [2019-11-15 23:06:36,169 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:36,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 44 conjunts are in the unsatisfiable core [2019-11-15 23:06:36,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 4150 proven. 1681 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2019-11-15 23:06:36,203 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:36,204 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 44] total 94 [2019-11-15 23:06:36,204 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914882498] [2019-11-15 23:06:36,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 94 states [2019-11-15 23:06:36,205 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:36,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2019-11-15 23:06:36,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2019-11-15 23:06:36,206 INFO L87 Difference]: Start difference. First operand 188 states and 229 transitions. Second operand 94 states. [2019-11-15 23:06:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:36,785 INFO L93 Difference]: Finished difference Result 195 states and 238 transitions. [2019-11-15 23:06:36,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2019-11-15 23:06:36,785 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 187 [2019-11-15 23:06:36,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:36,791 INFO L225 Difference]: With dead ends: 195 [2019-11-15 23:06:36,791 INFO L226 Difference]: Without dead ends: 191 [2019-11-15 23:06:36,792 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2019-11-15 23:06:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2019-11-15 23:06:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2019-11-15 23:06:36,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-11-15 23:06:36,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 232 transitions. [2019-11-15 23:06:36,798 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 232 transitions. Word has length 187 [2019-11-15 23:06:36,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:36,799 INFO L462 AbstractCegarLoop]: Abstraction has 190 states and 232 transitions. [2019-11-15 23:06:36,799 INFO L463 AbstractCegarLoop]: Interpolant automaton has 94 states. [2019-11-15 23:06:36,799 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 232 transitions. [2019-11-15 23:06:36,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-15 23:06:36,800 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:36,800 INFO L380 BasicCegarLoop]: trace histogram [92, 50, 42, 1, 1, 1, 1, 1] [2019-11-15 23:06:37,001 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:37,001 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:37,001 INFO L82 PathProgramCache]: Analyzing trace with hash -90222730, now seen corresponding path program 22 times [2019-11-15 23:06:37,001 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:37,001 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831319491] [2019-11-15 23:06:37,001 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:37,002 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:37,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:40,519 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831319491] [2019-11-15 23:06:40,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145670209] [2019-11-15 23:06:40,520 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:40,667 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 23:06:40,667 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:40,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 94 conjunts are in the unsatisfiable core [2019-11-15 23:06:40,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:40,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:40,722 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:40,722 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2019-11-15 23:06:40,722 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50005104] [2019-11-15 23:06:40,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 95 states [2019-11-15 23:06:40,722 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:40,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2019-11-15 23:06:40,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2019-11-15 23:06:40,723 INFO L87 Difference]: Start difference. First operand 190 states and 232 transitions. Second operand 95 states. [2019-11-15 23:06:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:41,291 INFO L93 Difference]: Finished difference Result 197 states and 241 transitions. [2019-11-15 23:06:41,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2019-11-15 23:06:41,297 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 189 [2019-11-15 23:06:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:41,299 INFO L225 Difference]: With dead ends: 197 [2019-11-15 23:06:41,299 INFO L226 Difference]: Without dead ends: 193 [2019-11-15 23:06:41,299 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2019-11-15 23:06:41,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-11-15 23:06:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2019-11-15 23:06:41,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2019-11-15 23:06:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 235 transitions. [2019-11-15 23:06:41,305 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 235 transitions. Word has length 189 [2019-11-15 23:06:41,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:41,306 INFO L462 AbstractCegarLoop]: Abstraction has 192 states and 235 transitions. [2019-11-15 23:06:41,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 95 states. [2019-11-15 23:06:41,306 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 235 transitions. [2019-11-15 23:06:41,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-11-15 23:06:41,307 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:41,307 INFO L380 BasicCegarLoop]: trace histogram [93, 50, 43, 1, 1, 1, 1, 1] [2019-11-15 23:06:41,511 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:41,511 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:41,511 INFO L82 PathProgramCache]: Analyzing trace with hash -752507845, now seen corresponding path program 23 times [2019-11-15 23:06:41,511 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:41,511 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997554361] [2019-11-15 23:06:41,511 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:41,511 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:41,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 0 proven. 8649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:45,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997554361] [2019-11-15 23:06:45,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004456683] [2019-11-15 23:06:45,470 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:45,648 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2019-11-15 23:06:45,648 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:45,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 49 conjunts are in the unsatisfiable core [2019-11-15 23:06:45,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 4371 proven. 2116 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2019-11-15 23:06:45,904 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:45,904 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 49] total 99 [2019-11-15 23:06:45,904 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308010123] [2019-11-15 23:06:45,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 99 states [2019-11-15 23:06:45,905 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:45,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2019-11-15 23:06:45,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2019-11-15 23:06:45,906 INFO L87 Difference]: Start difference. First operand 192 states and 235 transitions. Second operand 99 states. [2019-11-15 23:06:46,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:46,456 INFO L93 Difference]: Finished difference Result 205 states and 256 transitions. [2019-11-15 23:06:46,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2019-11-15 23:06:46,456 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 191 [2019-11-15 23:06:46,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:46,458 INFO L225 Difference]: With dead ends: 205 [2019-11-15 23:06:46,458 INFO L226 Difference]: Without dead ends: 201 [2019-11-15 23:06:46,458 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2019-11-15 23:06:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2019-11-15 23:06:46,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2019-11-15 23:06:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2019-11-15 23:06:46,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 247 transitions. [2019-11-15 23:06:46,465 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 247 transitions. Word has length 191 [2019-11-15 23:06:46,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:46,465 INFO L462 AbstractCegarLoop]: Abstraction has 200 states and 247 transitions. [2019-11-15 23:06:46,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 99 states. [2019-11-15 23:06:46,465 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 247 transitions. [2019-11-15 23:06:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-11-15 23:06:46,466 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:46,467 INFO L380 BasicCegarLoop]: trace histogram [97, 50, 47, 1, 1, 1, 1, 1] [2019-11-15 23:06:46,669 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:46,669 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:46,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:46,670 INFO L82 PathProgramCache]: Analyzing trace with hash 264041167, now seen corresponding path program 24 times [2019-11-15 23:06:46,670 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:46,670 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738981406] [2019-11-15 23:06:46,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:46,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:46,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 0 proven. 9409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:50,625 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738981406] [2019-11-15 23:06:50,625 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384191979] [2019-11-15 23:06:50,625 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:50,821 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 98 check-sat command(s) [2019-11-15 23:06:50,821 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:06:50,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 99 conjunts are in the unsatisfiable core [2019-11-15 23:06:50,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 0 proven. 9409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:50,885 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:50,885 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2019-11-15 23:06:50,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141520450] [2019-11-15 23:06:50,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 100 states [2019-11-15 23:06:50,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:50,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2019-11-15 23:06:50,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2019-11-15 23:06:50,887 INFO L87 Difference]: Start difference. First operand 200 states and 247 transitions. Second operand 100 states. [2019-11-15 23:06:51,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:51,524 INFO L93 Difference]: Finished difference Result 207 states and 256 transitions. [2019-11-15 23:06:51,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2019-11-15 23:06:51,524 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 199 [2019-11-15 23:06:51,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:51,526 INFO L225 Difference]: With dead ends: 207 [2019-11-15 23:06:51,526 INFO L226 Difference]: Without dead ends: 203 [2019-11-15 23:06:51,527 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2019-11-15 23:06:51,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2019-11-15 23:06:51,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2019-11-15 23:06:51,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2019-11-15 23:06:51,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 250 transitions. [2019-11-15 23:06:51,533 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 250 transitions. Word has length 199 [2019-11-15 23:06:51,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:51,533 INFO L462 AbstractCegarLoop]: Abstraction has 202 states and 250 transitions. [2019-11-15 23:06:51,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 100 states. [2019-11-15 23:06:51,534 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 250 transitions. [2019-11-15 23:06:51,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-11-15 23:06:51,535 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:51,535 INFO L380 BasicCegarLoop]: trace histogram [98, 50, 48, 1, 1, 1, 1, 1] [2019-11-15 23:06:51,738 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:51,738 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:51,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:51,739 INFO L82 PathProgramCache]: Analyzing trace with hash 392680788, now seen corresponding path program 25 times [2019-11-15 23:06:51,739 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:51,739 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032898844] [2019-11-15 23:06:51,739 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:51,739 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:51,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:55,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032898844] [2019-11-15 23:06:55,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886444178] [2019-11-15 23:06:55,658 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:06:55,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 100 conjunts are in the unsatisfiable core [2019-11-15 23:06:55,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:06:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:06:55,845 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:06:55,846 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2019-11-15 23:06:55,846 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540726327] [2019-11-15 23:06:55,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 101 states [2019-11-15 23:06:55,846 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:06:55,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2019-11-15 23:06:55,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2019-11-15 23:06:55,848 INFO L87 Difference]: Start difference. First operand 202 states and 250 transitions. Second operand 101 states. [2019-11-15 23:06:56,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:06:56,794 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2019-11-15 23:06:56,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2019-11-15 23:06:56,794 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 201 [2019-11-15 23:06:56,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:06:56,796 INFO L225 Difference]: With dead ends: 209 [2019-11-15 23:06:56,796 INFO L226 Difference]: Without dead ends: 205 [2019-11-15 23:06:56,796 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2019-11-15 23:06:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-11-15 23:06:56,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2019-11-15 23:06:56,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2019-11-15 23:06:56,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 253 transitions. [2019-11-15 23:06:56,802 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 253 transitions. Word has length 201 [2019-11-15 23:06:56,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:06:56,802 INFO L462 AbstractCegarLoop]: Abstraction has 204 states and 253 transitions. [2019-11-15 23:06:56,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 101 states. [2019-11-15 23:06:56,803 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 253 transitions. [2019-11-15 23:06:56,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-11-15 23:06:56,804 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:06:56,804 INFO L380 BasicCegarLoop]: trace histogram [99, 50, 49, 1, 1, 1, 1, 1] [2019-11-15 23:06:57,007 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:06:57,007 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:06:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:06:57,008 INFO L82 PathProgramCache]: Analyzing trace with hash -538695015, now seen corresponding path program 26 times [2019-11-15 23:06:57,008 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:06:57,008 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038063543] [2019-11-15 23:06:57,008 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:57,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:06:57,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:06:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:07:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:07:01,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038063543] [2019-11-15 23:07:01,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981437537] [2019-11-15 23:07:01,474 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:07:01,612 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:07:01,612 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:07:01,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 101 conjunts are in the unsatisfiable core [2019-11-15 23:07:01,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:07:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:07:01,673 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:07:01,673 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2019-11-15 23:07:01,674 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865188570] [2019-11-15 23:07:01,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 102 states [2019-11-15 23:07:01,674 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:07:01,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2019-11-15 23:07:01,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2019-11-15 23:07:01,676 INFO L87 Difference]: Start difference. First operand 204 states and 253 transitions. Second operand 102 states. [2019-11-15 23:07:02,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:07:02,676 INFO L93 Difference]: Finished difference Result 210 states and 260 transitions. [2019-11-15 23:07:02,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2019-11-15 23:07:02,676 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 203 [2019-11-15 23:07:02,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:07:02,677 INFO L225 Difference]: With dead ends: 210 [2019-11-15 23:07:02,678 INFO L226 Difference]: Without dead ends: 206 [2019-11-15 23:07:02,678 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2019-11-15 23:07:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2019-11-15 23:07:02,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2019-11-15 23:07:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2019-11-15 23:07:02,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 256 transitions. [2019-11-15 23:07:02,685 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 256 transitions. Word has length 203 [2019-11-15 23:07:02,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:07:02,685 INFO L462 AbstractCegarLoop]: Abstraction has 206 states and 256 transitions. [2019-11-15 23:07:02,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 102 states. [2019-11-15 23:07:02,685 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 256 transitions. [2019-11-15 23:07:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-11-15 23:07:02,687 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:07:02,687 INFO L380 BasicCegarLoop]: trace histogram [100, 50, 50, 1, 1, 1, 1, 1] [2019-11-15 23:07:02,890 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:07:02,890 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:07:02,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:07:02,891 INFO L82 PathProgramCache]: Analyzing trace with hash 2057323166, now seen corresponding path program 27 times [2019-11-15 23:07:02,891 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:07:02,891 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225077359] [2019-11-15 23:07:02,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:02,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:02,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:07:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:07:04,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2019-11-15 23:07:04,784 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225077359] [2019-11-15 23:07:04,784 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162221188] [2019-11-15 23:07:04,784 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:07:04,999 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2019-11-15 23:07:04,999 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:07:05,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 108 conjunts are in the unsatisfiable core [2019-11-15 23:07:05,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:07:05,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:07:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2019-11-15 23:07:05,205 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:07:05,206 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2019-11-15 23:07:05,206 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714095827] [2019-11-15 23:07:05,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 55 states [2019-11-15 23:07:05,210 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:07:05,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2019-11-15 23:07:05,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2019-11-15 23:07:05,211 INFO L87 Difference]: Start difference. First operand 206 states and 256 transitions. Second operand 55 states. [2019-11-15 23:07:06,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:07:06,871 INFO L93 Difference]: Finished difference Result 2861 states and 4236 transitions. [2019-11-15 23:07:06,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-11-15 23:07:06,871 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 205 [2019-11-15 23:07:06,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:07:06,886 INFO L225 Difference]: With dead ends: 2861 [2019-11-15 23:07:06,887 INFO L226 Difference]: Without dead ends: 2857 [2019-11-15 23:07:06,888 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=113, Invalid=2967, Unknown=0, NotChecked=0, Total=3080 [2019-11-15 23:07:06,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2019-11-15 23:07:06,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 208. [2019-11-15 23:07:06,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2019-11-15 23:07:06,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 259 transitions. [2019-11-15 23:07:06,933 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 259 transitions. Word has length 205 [2019-11-15 23:07:06,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:07:06,933 INFO L462 AbstractCegarLoop]: Abstraction has 208 states and 259 transitions. [2019-11-15 23:07:06,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 55 states. [2019-11-15 23:07:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 259 transitions. [2019-11-15 23:07:06,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-11-15 23:07:06,934 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:07:06,934 INFO L380 BasicCegarLoop]: trace histogram [101, 51, 50, 1, 1, 1, 1, 1] [2019-11-15 23:07:07,134 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:07:07,135 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:07:07,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:07:07,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1454796131, now seen corresponding path program 28 times [2019-11-15 23:07:07,135 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:07:07,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981269691] [2019-11-15 23:07:07,135 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:07,135 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:07,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:07:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:07:08,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 7651 proven. 0 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2019-11-15 23:07:08,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981269691] [2019-11-15 23:07:08,390 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:07:08,390 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2019-11-15 23:07:08,391 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203823140] [2019-11-15 23:07:08,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-11-15 23:07:08,391 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:07:08,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-11-15 23:07:08,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2019-11-15 23:07:08,393 INFO L87 Difference]: Start difference. First operand 208 states and 259 transitions. Second operand 52 states. [2019-11-15 23:07:08,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:07:08,612 INFO L93 Difference]: Finished difference Result 307 states and 407 transitions. [2019-11-15 23:07:08,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-11-15 23:07:08,613 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 207 [2019-11-15 23:07:08,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:07:08,614 INFO L225 Difference]: With dead ends: 307 [2019-11-15 23:07:08,614 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 23:07:08,615 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2019-11-15 23:07:08,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 23:07:08,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 23:07:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 23:07:08,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:07:08,616 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2019-11-15 23:07:08,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:07:08,616 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:07:08,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-11-15 23:07:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:07:08,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 23:07:08,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 23:07:09,500 WARN L191 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 1832 DAG size of output: 407 [2019-11-15 23:07:10,966 WARN L191 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 407 DAG size of output: 357 [2019-11-15 23:07:10,968 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 23:07:10,968 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 20) no Hoare annotation was computed. [2019-11-15 23:07:10,969 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-15 23:07:10,969 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-15 23:07:10,969 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 23:07:10,969 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 23:07:10,969 INFO L446 ceAbstractionStarter]: At program point L22(lines 10 23) the Hoare annotation is: true [2019-11-15 23:07:10,969 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 19) no Hoare annotation was computed. [2019-11-15 23:07:10,971 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 13 20) the Hoare annotation is: (or (and (and (<= ULTIMATE.start_main_~y~0 72) (<= 72 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 72)) (<= 72 ULTIMATE.start_main_~x~0)) (and (<= 86 ULTIMATE.start_main_~x~0) (and (<= 86 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 86) (<= ULTIMATE.start_main_~y~0 86))) (and (and (<= 95 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 95) (<= ULTIMATE.start_main_~x~0 95)) (<= 95 ULTIMATE.start_main_~x~0)) (and (and (<= 76 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 76) (<= ULTIMATE.start_main_~y~0 76)) (<= 76 ULTIMATE.start_main_~x~0)) (and (<= 82 ULTIMATE.start_main_~x~0) (and (<= 82 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 82) (<= ULTIMATE.start_main_~x~0 82))) (and (and (<= ULTIMATE.start_main_~y~0 70) (<= ULTIMATE.start_main_~x~0 70) (<= 70 ULTIMATE.start_main_~y~0)) (<= 70 ULTIMATE.start_main_~x~0)) (and (<= 52 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~y~0 52) (<= 52 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 52))) (and (<= 87 ULTIMATE.start_main_~x~0) (and (<= 87 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 87) (<= ULTIMATE.start_main_~y~0 87))) (and (<= 81 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~y~0 81) (<= ULTIMATE.start_main_~x~0 81) (<= 81 ULTIMATE.start_main_~y~0))) (and (and (<= ULTIMATE.start_main_~y~0 98) (<= 98 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 98)) (<= 98 ULTIMATE.start_main_~x~0)) (and (<= 84 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~y~0 84) (<= 84 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 84))) (and (<= 85 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~y~0 85) (<= 85 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 85))) (and (and (<= 68 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 68) (<= ULTIMATE.start_main_~y~0 68)) (<= 68 ULTIMATE.start_main_~x~0)) (and (and (<= ULTIMATE.start_main_~y~0 91) (<= 91 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 91)) (<= 91 ULTIMATE.start_main_~x~0)) (and (and (<= ULTIMATE.start_main_~y~0 58) (<= ULTIMATE.start_main_~x~0 58) (<= 58 ULTIMATE.start_main_~y~0)) (<= 58 ULTIMATE.start_main_~x~0)) (and (and (<= ULTIMATE.start_main_~y~0 65) (<= ULTIMATE.start_main_~x~0 65) (<= 65 ULTIMATE.start_main_~y~0)) (<= 65 ULTIMATE.start_main_~x~0)) (and (and (<= ULTIMATE.start_main_~y~0 79) (<= 79 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 79)) (<= 79 ULTIMATE.start_main_~x~0)) (and (and (<= ULTIMATE.start_main_~y~0 88) (<= ULTIMATE.start_main_~x~0 88) (<= 88 ULTIMATE.start_main_~y~0)) (<= 88 ULTIMATE.start_main_~x~0)) (and (<= 99 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~y~0 99) (<= 99 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 99))) (and (<= 55 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~y~0 55) (<= 55 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 55))) (and (and (<= 93 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 93) (<= ULTIMATE.start_main_~y~0 93)) (<= 93 ULTIMATE.start_main_~x~0)) (and (<= 71 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~y~0 71) (<= ULTIMATE.start_main_~x~0 71) (<= 71 ULTIMATE.start_main_~y~0))) (and (<= 89 ULTIMATE.start_main_~x~0) (and (<= 89 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 89) (<= ULTIMATE.start_main_~y~0 89))) (and (<= 59 ULTIMATE.start_main_~x~0) (and (<= 59 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 59) (<= ULTIMATE.start_main_~x~0 59))) (and (and (<= 100 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 100)) (<= 100 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 50) (<= ULTIMATE.start_main_~y~0 50) (<= 50 ULTIMATE.start_main_~y~0)) (and (and (<= ULTIMATE.start_main_~x~0 78) (<= 78 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 78)) (<= 78 ULTIMATE.start_main_~x~0)) (and (<= 66 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~y~0 66) (<= ULTIMATE.start_main_~x~0 66) (<= 66 ULTIMATE.start_main_~y~0))) (and (<= 57 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~x~0 57) (<= ULTIMATE.start_main_~y~0 57) (<= 57 ULTIMATE.start_main_~y~0))) (and (and (<= ULTIMATE.start_main_~x~0 94) (<= ULTIMATE.start_main_~y~0 94) (<= 94 ULTIMATE.start_main_~y~0)) (<= 94 ULTIMATE.start_main_~x~0)) (and (<= 63 ULTIMATE.start_main_~x~0) (and (<= 63 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 63) (<= ULTIMATE.start_main_~x~0 63))) (and (and (<= 97 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 97) (<= ULTIMATE.start_main_~y~0 97)) (<= 97 ULTIMATE.start_main_~x~0)) (and (and (<= ULTIMATE.start_main_~x~0 74) (<= 74 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 74)) (<= 74 ULTIMATE.start_main_~x~0)) (and (and (<= ULTIMATE.start_main_~x~0 51) (<= ULTIMATE.start_main_~y~0 51) (<= 51 ULTIMATE.start_main_~y~0)) (<= 51 ULTIMATE.start_main_~x~0)) (and (and (<= 64 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 64) (<= ULTIMATE.start_main_~y~0 64)) (<= 64 ULTIMATE.start_main_~x~0)) (and (<= 73 ULTIMATE.start_main_~x~0) (and (<= 73 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 73) (<= ULTIMATE.start_main_~x~0 73))) (and (<= 67 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~x~0 67) (<= 67 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 67))) (and (<= 54 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~y~0 54) (<= 54 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 54))) (and (and (<= ULTIMATE.start_main_~y~0 69) (<= 69 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 69)) (<= 69 ULTIMATE.start_main_~x~0)) (and (and (<= ULTIMATE.start_main_~x~0 62) (<= ULTIMATE.start_main_~y~0 62) (<= 62 ULTIMATE.start_main_~y~0)) (<= 62 ULTIMATE.start_main_~x~0)) (and (and (<= 61 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 61) (<= ULTIMATE.start_main_~y~0 61)) (<= 61 ULTIMATE.start_main_~x~0)) (and (and (<= ULTIMATE.start_main_~x~0 53) (<= ULTIMATE.start_main_~y~0 53) (<= 53 ULTIMATE.start_main_~y~0)) (<= 53 ULTIMATE.start_main_~x~0)) (and (<= 60 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~x~0 60) (<= ULTIMATE.start_main_~y~0 60) (<= 60 ULTIMATE.start_main_~y~0))) (and (and (<= ULTIMATE.start_main_~y~0 75) (<= ULTIMATE.start_main_~x~0 75) (<= 75 ULTIMATE.start_main_~y~0)) (<= 75 ULTIMATE.start_main_~x~0)) (and (and (<= ULTIMATE.start_main_~x~0 90) (<= ULTIMATE.start_main_~y~0 90) (<= 90 ULTIMATE.start_main_~y~0)) (<= 90 ULTIMATE.start_main_~x~0)) (and (and (<= ULTIMATE.start_main_~y~0 96) (<= 96 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 96)) (<= 96 ULTIMATE.start_main_~x~0)) (and (and (<= 80 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 80) (<= ULTIMATE.start_main_~y~0 80)) (<= 80 ULTIMATE.start_main_~x~0)) (and (and (<= ULTIMATE.start_main_~x~0 83) (<= ULTIMATE.start_main_~y~0 83) (<= 83 ULTIMATE.start_main_~y~0)) (<= 83 ULTIMATE.start_main_~x~0)) (and (and (<= ULTIMATE.start_main_~y~0 56) (<= ULTIMATE.start_main_~x~0 56) (<= 56 ULTIMATE.start_main_~y~0)) (<= 56 ULTIMATE.start_main_~x~0)) (and (<= 77 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~x~0 77) (<= 77 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 77))) (and (<= 92 ULTIMATE.start_main_~x~0) (and (<= ULTIMATE.start_main_~y~0 92) (<= ULTIMATE.start_main_~x~0 92) (<= 92 ULTIMATE.start_main_~y~0)))) [2019-11-15 23:07:10,971 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-15 23:07:10,971 INFO L446 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-15 23:07:11,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:07:11 BoogieIcfgContainer [2019-11-15 23:07:11,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:07:11,006 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:07:11,006 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:07:11,006 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:07:11,006 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:06:00" (3/4) ... [2019-11-15 23:07:11,009 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 23:07:11,018 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-15 23:07:11,019 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 23:07:11,064 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ba7566d9-c694-4a39-80dc-c2d11c18ad5c/bin/uautomizer/witness.graphml [2019-11-15 23:07:11,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:07:11,065 INFO L168 Benchmark]: Toolchain (without parser) took 71450.89 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 724.6 MB). Free memory was 943.3 MB in the beginning and 1.2 GB in the end (delta: -256.7 MB). Peak memory consumption was 467.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:07:11,066 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 1.0 GB. Free memory is still 964.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:07:11,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -177.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:07:11,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:07:11,067 INFO L168 Benchmark]: Boogie Preprocessor took 19.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:07:11,067 INFO L168 Benchmark]: RCFGBuilder took 222.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:07:11,068 INFO L168 Benchmark]: TraceAbstraction took 70796.77 ms. Allocated memory was 1.1 GB in the beginning and 1.8 GB in the end (delta: 604.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -110.9 MB). Peak memory consumption was 933.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:07:11,068 INFO L168 Benchmark]: Witness Printer took 58.77 ms. Allocated memory is still 1.8 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:07:11,070 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 1.0 GB. Free memory is still 964.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 312.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -177.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 222.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 70796.77 ms. Allocated memory was 1.1 GB in the beginning and 1.8 GB in the end (delta: 604.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -110.9 MB). Peak memory consumption was 933.5 MB. Max. memory is 11.5 GB. * Witness Printer took 58.77 ms. Allocated memory is still 1.8 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 72 && 72 <= y) && x <= 72) && 72 <= x) || (86 <= x && (86 <= y && x <= 86) && y <= 86)) || (((95 <= y && y <= 95) && x <= 95) && 95 <= x)) || (((76 <= y && x <= 76) && y <= 76) && 76 <= x)) || (82 <= x && (82 <= y && y <= 82) && x <= 82)) || (((y <= 70 && x <= 70) && 70 <= y) && 70 <= x)) || (52 <= x && (y <= 52 && 52 <= y) && x <= 52)) || (87 <= x && (87 <= y && x <= 87) && y <= 87)) || (81 <= x && (y <= 81 && x <= 81) && 81 <= y)) || (((y <= 98 && 98 <= y) && x <= 98) && 98 <= x)) || (84 <= x && (y <= 84 && 84 <= y) && x <= 84)) || (85 <= x && (y <= 85 && 85 <= y) && x <= 85)) || (((68 <= y && x <= 68) && y <= 68) && 68 <= x)) || (((y <= 91 && 91 <= y) && x <= 91) && 91 <= x)) || (((y <= 58 && x <= 58) && 58 <= y) && 58 <= x)) || (((y <= 65 && x <= 65) && 65 <= y) && 65 <= x)) || (((y <= 79 && 79 <= y) && x <= 79) && 79 <= x)) || (((y <= 88 && x <= 88) && 88 <= y) && 88 <= x)) || (99 <= x && (y <= 99 && 99 <= y) && x <= 99)) || (55 <= x && (y <= 55 && 55 <= y) && x <= 55)) || (((93 <= y && x <= 93) && y <= 93) && 93 <= x)) || (71 <= x && (y <= 71 && x <= 71) && 71 <= y)) || (89 <= x && (89 <= y && x <= 89) && y <= 89)) || (59 <= x && (59 <= y && y <= 59) && x <= 59)) || ((100 <= y && y <= 100) && 100 <= x)) || ((x <= 50 && y <= 50) && 50 <= y)) || (((x <= 78 && 78 <= y) && y <= 78) && 78 <= x)) || (66 <= x && (y <= 66 && x <= 66) && 66 <= y)) || (57 <= x && (x <= 57 && y <= 57) && 57 <= y)) || (((x <= 94 && y <= 94) && 94 <= y) && 94 <= x)) || (63 <= x && (63 <= y && y <= 63) && x <= 63)) || (((97 <= y && x <= 97) && y <= 97) && 97 <= x)) || (((x <= 74 && 74 <= y) && y <= 74) && 74 <= x)) || (((x <= 51 && y <= 51) && 51 <= y) && 51 <= x)) || (((64 <= y && x <= 64) && y <= 64) && 64 <= x)) || (73 <= x && (73 <= y && y <= 73) && x <= 73)) || (67 <= x && (x <= 67 && 67 <= y) && y <= 67)) || (54 <= x && (y <= 54 && 54 <= y) && x <= 54)) || (((y <= 69 && 69 <= y) && x <= 69) && 69 <= x)) || (((x <= 62 && y <= 62) && 62 <= y) && 62 <= x)) || (((61 <= y && x <= 61) && y <= 61) && 61 <= x)) || (((x <= 53 && y <= 53) && 53 <= y) && 53 <= x)) || (60 <= x && (x <= 60 && y <= 60) && 60 <= y)) || (((y <= 75 && x <= 75) && 75 <= y) && 75 <= x)) || (((x <= 90 && y <= 90) && 90 <= y) && 90 <= x)) || (((y <= 96 && 96 <= y) && x <= 96) && 96 <= x)) || (((80 <= y && x <= 80) && y <= 80) && 80 <= x)) || (((x <= 83 && y <= 83) && 83 <= y) && 83 <= x)) || (((y <= 56 && x <= 56) && 56 <= y) && 56 <= x)) || (77 <= x && (x <= 77 && 77 <= y) && y <= 77)) || (92 <= x && (y <= 92 && x <= 92) && 92 <= y) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 70.7s, OverallIterations: 31, TraceHistogramMax: 101, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.3s, HoareTripleCheckerStatistics: 272 SDtfs, 1521 SDslu, 8196 SDs, 0 SdLazy, 7407 SolverSat, 1834 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4417 GetRequests, 2923 SyntacticMatches, 1 SemanticMatches, 1493 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred in iteration=30, 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, 31 MinimizatonAttempts, 2665 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 106 NumberOfFragments, 710 HoareAnnotationTreeSize, 3 FomulaSimplifications, 13400 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 3 FomulaSimplificationsInter, 200 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 48.2s InterpolantComputationTime, 6153 NumberOfCodeBlocks, 5949 NumberOfCodeBlocksAsserted, 671 NumberOfCheckSat, 6094 ConstructedInterpolants, 0 QuantifiedInterpolants, 2917096 SizeOfPredicates, 20 NumberOfNonLiveVariables, 6612 ConjunctsInSsa, 1162 ConjunctsInUnsatCore, 59 InterpolantComputations, 4 PerfectInterpolantSequences, 42798/223681 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...