./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_25x0-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_25x0-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b889a023778b04550d2c62aff232de4d0de3b9f ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:01:42,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:01:42,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:01:42,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:01:42,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:01:42,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:01:42,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:01:42,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:01:42,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:01:42,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:01:42,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:01:42,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:01:42,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:01:42,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:01:42,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:01:42,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:01:42,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:01:42,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:01:42,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:01:42,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:01:42,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:01:42,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:01:42,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:01:42,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:01:42,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:01:42,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:01:42,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:01:42,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:01:42,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:01:42,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:01:42,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:01:42,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:01:42,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:01:42,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:01:42,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:01:42,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:01:42,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:01:42,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:01:42,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:01:42,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:01:42,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:01:42,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:01:42,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:01:42,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:01:42,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:01:42,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:01:42,806 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:01:42,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:01:42,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:01:42,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:01:42,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:01:42,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:01:42,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:01:42,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:01:42,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:01:42,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:01:42,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:01:42,810 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:01:42,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:01:42,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:01:42,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:01:42,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:01:42,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:01:42,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:01:42,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:01:42,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:01:42,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:01:42,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:01:42,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:01:42,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:01:42,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:01:42,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b889a023778b04550d2c62aff232de4d0de3b9f [2020-11-29 19:01:43,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:01:43,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:01:43,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:01:43,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:01:43,170 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:01:43,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/sum_25x0-1.c [2020-11-29 19:01:43,243 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer/data/e22134d09/bd78c841e990466fb7e6bfe4a307ebb9/FLAG240bd093b [2020-11-29 19:01:43,683 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:01:43,684 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/sv-benchmarks/c/recursive-simple/sum_25x0-1.c [2020-11-29 19:01:43,691 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer/data/e22134d09/bd78c841e990466fb7e6bfe4a307ebb9/FLAG240bd093b [2020-11-29 19:01:44,088 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer/data/e22134d09/bd78c841e990466fb7e6bfe4a307ebb9 [2020-11-29 19:01:44,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:01:44,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:01:44,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:01:44,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:01:44,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:01:44,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:01:44" (1/1) ... [2020-11-29 19:01:44,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a033c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:44, skipping insertion in model container [2020-11-29 19:01:44,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:01:44" (1/1) ... [2020-11-29 19:01:44,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:01:44,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:01:44,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:01:44,336 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:01:44,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:01:44,379 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:01:44,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:44 WrapperNode [2020-11-29 19:01:44,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:01:44,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:01:44,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:01:44,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:01:44,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:44" (1/1) ... [2020-11-29 19:01:44,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:44" (1/1) ... [2020-11-29 19:01:44,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:01:44,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:01:44,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:01:44,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:01:44,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:44" (1/1) ... [2020-11-29 19:01:44,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:44" (1/1) ... [2020-11-29 19:01:44,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:44" (1/1) ... [2020-11-29 19:01:44,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:44" (1/1) ... [2020-11-29 19:01:44,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:44" (1/1) ... [2020-11-29 19:01:44,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:44" (1/1) ... [2020-11-29 19:01:44,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:44" (1/1) ... [2020-11-29 19:01:44,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:01:44,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:01:44,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:01:44,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:01:44,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:44,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:01:44,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:01:44,531 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-11-29 19:01:44,531 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-11-29 19:01:44,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:01:44,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:01:44,763 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:01:44,764 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 19:01:44,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:44 BoogieIcfgContainer [2020-11-29 19:01:44,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:01:44,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:01:44,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:01:44,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:01:44,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:01:44" (1/3) ... [2020-11-29 19:01:44,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754cad6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:01:44, skipping insertion in model container [2020-11-29 19:01:44,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:44" (2/3) ... [2020-11-29 19:01:44,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754cad6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:01:44, skipping insertion in model container [2020-11-29 19:01:44,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:44" (3/3) ... [2020-11-29 19:01:44,797 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_25x0-1.c [2020-11-29 19:01:44,822 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:01:44,826 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:01:44,841 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:01:44,867 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:01:44,867 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:01:44,867 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:01:44,867 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:01:44,867 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:01:44,868 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:01:44,868 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:01:44,868 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:01:44,899 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-11-29 19:01:44,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:01:44,904 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:44,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:44,905 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:44,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:44,910 INFO L82 PathProgramCache]: Analyzing trace with hash 666808458, now seen corresponding path program 1 times [2020-11-29 19:01:44,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:44,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687295789] [2020-11-29 19:01:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:45,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:01:45,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687295789] [2020-11-29 19:01:45,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:01:45,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:01:45,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145263912] [2020-11-29 19:01:45,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:01:45,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:45,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:01:45,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:01:45,244 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2020-11-29 19:01:45,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:45,376 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-11-29 19:01:45,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:01:45,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 19:01:45,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:45,392 INFO L225 Difference]: With dead ends: 26 [2020-11-29 19:01:45,392 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 19:01:45,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:01:45,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 19:01:45,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-29 19:01:45,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 19:01:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-11-29 19:01:45,432 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-11-29 19:01:45,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:45,433 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-29 19:01:45,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:01:45,433 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-11-29 19:01:45,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:01:45,435 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:45,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:45,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:01:45,435 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:45,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:45,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1352629460, now seen corresponding path program 1 times [2020-11-29 19:01:45,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:45,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893219272] [2020-11-29 19:01:45,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:45,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:45,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:01:45,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893219272] [2020-11-29 19:01:45,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303787255] [2020-11-29 19:01:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:01:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:45,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:01:45,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:01:45,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:45,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-29 19:01:45,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746702659] [2020-11-29 19:01:45,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:01:45,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:45,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:01:45,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:01:45,838 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2020-11-29 19:01:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:45,928 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-29 19:01:45,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:01:45,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-29 19:01:45,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:45,932 INFO L225 Difference]: With dead ends: 22 [2020-11-29 19:01:45,932 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 19:01:45,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:01:45,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 19:01:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 19:01:45,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 19:01:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-29 19:01:45,945 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2020-11-29 19:01:45,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:45,946 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-29 19:01:45,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:01:45,946 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-29 19:01:45,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:01:45,948 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:45,948 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:46,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 19:01:46,174 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:46,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:46,175 INFO L82 PathProgramCache]: Analyzing trace with hash 832070858, now seen corresponding path program 2 times [2020-11-29 19:01:46,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:46,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290191540] [2020-11-29 19:01:46,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:46,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:46,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:46,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-29 19:01:46,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290191540] [2020-11-29 19:01:46,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221185345] [2020-11-29 19:01:46,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:46,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:01:46,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:01:46,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 19:01:46,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-29 19:01:46,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:46,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-29 19:01:46,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103435802] [2020-11-29 19:01:46,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:01:46,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:46,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:01:46,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:01:46,597 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-11-29 19:01:46,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:46,688 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-11-29 19:01:46,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:01:46,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-11-29 19:01:46,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:46,690 INFO L225 Difference]: With dead ends: 25 [2020-11-29 19:01:46,690 INFO L226 Difference]: Without dead ends: 21 [2020-11-29 19:01:46,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:01:46,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-29 19:01:46,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-29 19:01:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 19:01:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-29 19:01:46,707 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2020-11-29 19:01:46,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:46,708 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-29 19:01:46,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:01:46,708 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-29 19:01:46,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 19:01:46,709 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:46,710 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:46,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:01:46,930 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:46,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:46,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1547641236, now seen corresponding path program 3 times [2020-11-29 19:01:46,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:46,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847002000] [2020-11-29 19:01:46,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:47,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:47,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:47,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:47,181 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-29 19:01:47,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847002000] [2020-11-29 19:01:47,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258532025] [2020-11-29 19:01:47,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:47,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-29 19:01:47,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:01:47,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 19:01:47,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-29 19:01:47,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:47,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-29 19:01:47,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221809194] [2020-11-29 19:01:47,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 19:01:47,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:47,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 19:01:47,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:01:47,322 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2020-11-29 19:01:47,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:47,446 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-11-29 19:01:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:01:47,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-11-29 19:01:47,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:47,448 INFO L225 Difference]: With dead ends: 28 [2020-11-29 19:01:47,449 INFO L226 Difference]: Without dead ends: 24 [2020-11-29 19:01:47,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-11-29 19:01:47,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-29 19:01:47,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-29 19:01:47,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 19:01:47,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-11-29 19:01:47,456 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28 [2020-11-29 19:01:47,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:47,456 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-11-29 19:01:47,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 19:01:47,456 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-11-29 19:01:47,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 19:01:47,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:47,463 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:47,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:01:47,674 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:47,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:47,674 INFO L82 PathProgramCache]: Analyzing trace with hash -346978038, now seen corresponding path program 4 times [2020-11-29 19:01:47,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:47,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88614641] [2020-11-29 19:01:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:47,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:47,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:47,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:47,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:47,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-29 19:01:47,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88614641] [2020-11-29 19:01:47,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590718130] [2020-11-29 19:01:47,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:48,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:01:48,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:01:48,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 19:01:48,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-29 19:01:48,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:48,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-29 19:01:48,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450802477] [2020-11-29 19:01:48,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 19:01:48,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:48,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 19:01:48,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:01:48,100 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 10 states. [2020-11-29 19:01:48,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:48,234 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-11-29 19:01:48,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:01:48,235 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-11-29 19:01:48,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:48,236 INFO L225 Difference]: With dead ends: 31 [2020-11-29 19:01:48,237 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 19:01:48,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-11-29 19:01:48,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 19:01:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-29 19:01:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 19:01:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-29 19:01:48,244 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34 [2020-11-29 19:01:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:48,244 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-29 19:01:48,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 19:01:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-29 19:01:48,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-29 19:01:48,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:48,253 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:48,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:01:48,454 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:48,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:48,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1234184620, now seen corresponding path program 5 times [2020-11-29 19:01:48,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:48,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263150772] [2020-11-29 19:01:48,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:48,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:48,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:48,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:48,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:48,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:48,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-29 19:01:48,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263150772] [2020-11-29 19:01:48,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998971901] [2020-11-29 19:01:48,700 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:48,767 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-29 19:01:48,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:01:48,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 19:01:48,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-29 19:01:48,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:48,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-29 19:01:48,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767362584] [2020-11-29 19:01:48,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 19:01:48,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:48,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 19:01:48,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:01:48,840 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 11 states. [2020-11-29 19:01:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:48,986 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-11-29 19:01:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:01:48,986 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-11-29 19:01:48,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:48,988 INFO L225 Difference]: With dead ends: 34 [2020-11-29 19:01:48,988 INFO L226 Difference]: Without dead ends: 30 [2020-11-29 19:01:48,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-11-29 19:01:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-29 19:01:48,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-29 19:01:48,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 19:01:48,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-29 19:01:48,995 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 40 [2020-11-29 19:01:48,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:48,996 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-29 19:01:48,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 19:01:48,996 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-29 19:01:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-29 19:01:49,004 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:49,004 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:49,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 19:01:49,229 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:49,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:49,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1831214410, now seen corresponding path program 6 times [2020-11-29 19:01:49,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:49,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785733216] [2020-11-29 19:01:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:49,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:49,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:49,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:49,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:49,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:49,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:49,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-29 19:01:49,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785733216] [2020-11-29 19:01:49,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276827454] [2020-11-29 19:01:49,500 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:49,581 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-29 19:01:49,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:01:49,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 19:01:49,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:49,667 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-29 19:01:49,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:49,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-29 19:01:49,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989442404] [2020-11-29 19:01:49,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 19:01:49,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:49,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 19:01:49,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:01:49,670 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 12 states. [2020-11-29 19:01:49,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:49,854 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-11-29 19:01:49,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 19:01:49,855 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-11-29 19:01:49,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:49,856 INFO L225 Difference]: With dead ends: 37 [2020-11-29 19:01:49,857 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 19:01:49,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:01:49,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 19:01:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-29 19:01:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 19:01:49,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-11-29 19:01:49,866 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 46 [2020-11-29 19:01:49,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:49,867 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-11-29 19:01:49,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 19:01:49,867 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-11-29 19:01:49,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-29 19:01:49,871 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:49,871 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:50,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:01:50,078 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:50,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:50,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1739954964, now seen corresponding path program 7 times [2020-11-29 19:01:50,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:50,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054890064] [2020-11-29 19:01:50,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:50,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:50,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:50,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:50,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:50,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:50,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:50,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-29 19:01:50,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054890064] [2020-11-29 19:01:50,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800704911] [2020-11-29 19:01:50,413 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:50,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 19:01:50,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-29 19:01:50,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:50,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-29 19:01:50,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346777901] [2020-11-29 19:01:50,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 19:01:50,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:50,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 19:01:50,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-11-29 19:01:50,579 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 13 states. [2020-11-29 19:01:50,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:50,816 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-11-29 19:01:50,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:01:50,817 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-11-29 19:01:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:50,818 INFO L225 Difference]: With dead ends: 40 [2020-11-29 19:01:50,818 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 19:01:50,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-11-29 19:01:50,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 19:01:50,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-29 19:01:50,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 19:01:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-11-29 19:01:50,826 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 52 [2020-11-29 19:01:50,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:50,827 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-11-29 19:01:50,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 19:01:50,827 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-11-29 19:01:50,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-29 19:01:50,829 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:50,829 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:51,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:01:51,030 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:51,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:51,030 INFO L82 PathProgramCache]: Analyzing trace with hash -632151670, now seen corresponding path program 8 times [2020-11-29 19:01:51,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:51,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296522562] [2020-11-29 19:01:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:51,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:51,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:51,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:51,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:51,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:51,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:51,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:51,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-29 19:01:51,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296522562] [2020-11-29 19:01:51,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814333206] [2020-11-29 19:01:51,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:51,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:01:51,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:01:51,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 19:01:51,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-29 19:01:51,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:51,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-29 19:01:51,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493656313] [2020-11-29 19:01:51,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 19:01:51,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:51,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 19:01:51,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:01:51,552 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 14 states. [2020-11-29 19:01:51,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:51,737 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-11-29 19:01:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 19:01:51,738 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-11-29 19:01:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:51,739 INFO L225 Difference]: With dead ends: 43 [2020-11-29 19:01:51,739 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 19:01:51,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-11-29 19:01:51,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 19:01:51,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 19:01:51,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 19:01:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-11-29 19:01:51,746 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 58 [2020-11-29 19:01:51,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:51,747 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-11-29 19:01:51,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 19:01:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-11-29 19:01:51,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-29 19:01:51,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:51,749 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:51,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-29 19:01:51,969 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:51,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:51,970 INFO L82 PathProgramCache]: Analyzing trace with hash 764702676, now seen corresponding path program 9 times [2020-11-29 19:01:51,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:51,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360115157] [2020-11-29 19:01:51,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:52,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:52,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:52,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:52,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:52,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:52,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:52,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-29 19:01:52,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360115157] [2020-11-29 19:01:52,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659154021] [2020-11-29 19:01:52,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:52,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-29 19:01:52,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:01:52,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 19:01:52,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-29 19:01:52,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:52,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-29 19:01:52,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098901992] [2020-11-29 19:01:52,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-29 19:01:52,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:52,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 19:01:52,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-11-29 19:01:52,528 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 15 states. [2020-11-29 19:01:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:52,735 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-11-29 19:01:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 19:01:52,736 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-11-29 19:01:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:52,737 INFO L225 Difference]: With dead ends: 46 [2020-11-29 19:01:52,737 INFO L226 Difference]: Without dead ends: 42 [2020-11-29 19:01:52,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-11-29 19:01:52,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-29 19:01:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-29 19:01:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-29 19:01:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-11-29 19:01:52,745 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 64 [2020-11-29 19:01:52,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:52,749 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-11-29 19:01:52,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-29 19:01:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-11-29 19:01:52,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-29 19:01:52,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:52,755 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:52,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:01:52,977 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:52,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:52,977 INFO L82 PathProgramCache]: Analyzing trace with hash 554800586, now seen corresponding path program 10 times [2020-11-29 19:01:52,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:52,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242664672] [2020-11-29 19:01:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:53,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:53,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:53,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:53,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:53,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:53,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:53,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:53,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:53,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:53,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:53,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-11-29 19:01:53,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242664672] [2020-11-29 19:01:53,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462868065] [2020-11-29 19:01:53,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:53,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:01:53,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:01:53,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 19:01:53,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-11-29 19:01:53,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:53,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-11-29 19:01:53,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419179960] [2020-11-29 19:01:53,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 19:01:53,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:53,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 19:01:53,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:01:53,640 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 16 states. [2020-11-29 19:01:53,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:53,859 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-11-29 19:01:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 19:01:53,860 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-11-29 19:01:53,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:53,862 INFO L225 Difference]: With dead ends: 49 [2020-11-29 19:01:53,862 INFO L226 Difference]: Without dead ends: 45 [2020-11-29 19:01:53,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-11-29 19:01:53,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-29 19:01:53,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-29 19:01:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 19:01:53,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-11-29 19:01:53,869 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 70 [2020-11-29 19:01:53,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:53,874 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-11-29 19:01:53,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 19:01:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-11-29 19:01:53,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-29 19:01:53,879 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:53,879 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:54,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:01:54,105 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:54,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:54,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1164946284, now seen corresponding path program 11 times [2020-11-29 19:01:54,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:54,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345120041] [2020-11-29 19:01:54,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:54,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:54,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:54,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:54,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:54,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:54,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:54,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:54,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:54,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:54,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:54,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-11-29 19:01:54,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345120041] [2020-11-29 19:01:54,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819255196] [2020-11-29 19:01:54,592 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:54,695 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-29 19:01:54,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:01:54,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-29 19:01:54,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-11-29 19:01:54,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:54,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-11-29 19:01:54,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315311576] [2020-11-29 19:01:54,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 19:01:54,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:54,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 19:01:54,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-11-29 19:01:54,784 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 17 states. [2020-11-29 19:01:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:55,051 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-11-29 19:01:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 19:01:55,058 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-11-29 19:01:55,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:55,059 INFO L225 Difference]: With dead ends: 52 [2020-11-29 19:01:55,059 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 19:01:55,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-11-29 19:01:55,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 19:01:55,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-11-29 19:01:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 19:01:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-11-29 19:01:55,068 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 76 [2020-11-29 19:01:55,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:55,069 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-11-29 19:01:55,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 19:01:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-11-29 19:01:55,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-29 19:01:55,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:55,070 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:55,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-29 19:01:55,271 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:55,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:55,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1163888118, now seen corresponding path program 12 times [2020-11-29 19:01:55,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:55,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409918540] [2020-11-29 19:01:55,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-11-29 19:01:55,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409918540] [2020-11-29 19:01:55,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187748719] [2020-11-29 19:01:55,798 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:55,893 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-29 19:01:55,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:01:55,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-29 19:01:55,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-11-29 19:01:55,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:55,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-29 19:01:55,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336386925] [2020-11-29 19:01:55,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-29 19:01:55,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:55,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 19:01:55,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-11-29 19:01:55,987 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 18 states. [2020-11-29 19:01:56,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:56,256 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-11-29 19:01:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 19:01:56,257 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 82 [2020-11-29 19:01:56,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:56,258 INFO L225 Difference]: With dead ends: 55 [2020-11-29 19:01:56,258 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 19:01:56,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2020-11-29 19:01:56,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 19:01:56,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-29 19:01:56,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-29 19:01:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-11-29 19:01:56,266 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 82 [2020-11-29 19:01:56,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:56,266 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-11-29 19:01:56,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-29 19:01:56,266 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-11-29 19:01:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 19:01:56,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:56,267 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:56,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 19:01:56,493 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:56,494 INFO L82 PathProgramCache]: Analyzing trace with hash -164804268, now seen corresponding path program 13 times [2020-11-29 19:01:56,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:56,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767566253] [2020-11-29 19:01:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:56,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-11-29 19:01:57,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767566253] [2020-11-29 19:01:57,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172124037] [2020-11-29 19:01:57,053 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:57,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 19:01:57,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-11-29 19:01:57,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:57,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-11-29 19:01:57,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451480220] [2020-11-29 19:01:57,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-29 19:01:57,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:57,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-29 19:01:57,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:01:57,239 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 19 states. [2020-11-29 19:01:57,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:57,528 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-11-29 19:01:57,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 19:01:57,529 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 88 [2020-11-29 19:01:57,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:57,531 INFO L225 Difference]: With dead ends: 58 [2020-11-29 19:01:57,531 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 19:01:57,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=379, Invalid=677, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 19:01:57,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 19:01:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-29 19:01:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 19:01:57,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-11-29 19:01:57,549 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 88 [2020-11-29 19:01:57,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:57,550 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-11-29 19:01:57,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-29 19:01:57,550 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-11-29 19:01:57,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-29 19:01:57,553 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:57,553 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:57,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 19:01:57,755 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:57,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1799016010, now seen corresponding path program 14 times [2020-11-29 19:01:57,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:57,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224308272] [2020-11-29 19:01:57,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:57,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:57,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:57,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:57,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:57,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:58,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:58,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:58,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:58,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:58,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:58,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:58,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:58,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-11-29 19:01:58,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224308272] [2020-11-29 19:01:58,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493664376] [2020-11-29 19:01:58,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:58,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:01:58,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:01:58,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-29 19:01:58,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:01:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-11-29 19:01:58,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:01:58,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-29 19:01:58,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505124930] [2020-11-29 19:01:58,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-29 19:01:58,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:58,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 19:01:58,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2020-11-29 19:01:58,622 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 20 states. [2020-11-29 19:01:58,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:58,961 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-11-29 19:01:58,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 19:01:58,962 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 94 [2020-11-29 19:01:58,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:58,963 INFO L225 Difference]: With dead ends: 61 [2020-11-29 19:01:58,963 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 19:01:58,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=428, Invalid=762, Unknown=0, NotChecked=0, Total=1190 [2020-11-29 19:01:58,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 19:01:58,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-29 19:01:58,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 19:01:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-11-29 19:01:58,977 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 94 [2020-11-29 19:01:58,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:58,977 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-11-29 19:01:58,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-29 19:01:58,978 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-11-29 19:01:58,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-29 19:01:58,979 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:58,979 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:01:59,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:01:59,198 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:59,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:59,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1022316052, now seen corresponding path program 15 times [2020-11-29 19:01:59,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:59,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001070852] [2020-11-29 19:01:59,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:01:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-11-29 19:01:59,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001070852] [2020-11-29 19:01:59,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55447737] [2020-11-29 19:01:59,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:01:59,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-29 19:01:59,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:01:59,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-29 19:01:59,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-11-29 19:02:00,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:02:00,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-11-29 19:02:00,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437592315] [2020-11-29 19:02:00,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-29 19:02:00,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:02:00,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-29 19:02:00,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2020-11-29 19:02:00,093 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 21 states. [2020-11-29 19:02:00,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:02:00,411 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-11-29 19:02:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-29 19:02:00,412 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 100 [2020-11-29 19:02:00,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:02:00,413 INFO L225 Difference]: With dead ends: 64 [2020-11-29 19:02:00,413 INFO L226 Difference]: Without dead ends: 60 [2020-11-29 19:02:00,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2020-11-29 19:02:00,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-29 19:02:00,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-11-29 19:02:00,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 19:02:00,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-11-29 19:02:00,420 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 100 [2020-11-29 19:02:00,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:02:00,421 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-11-29 19:02:00,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-29 19:02:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-11-29 19:02:00,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 19:02:00,423 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:02:00,423 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:02:00,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 19:02:00,641 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:02:00,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:02:00,642 INFO L82 PathProgramCache]: Analyzing trace with hash 35426954, now seen corresponding path program 16 times [2020-11-29 19:02:00,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:02:00,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987204232] [2020-11-29 19:02:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:02:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:00,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:00,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:00,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:00,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:00,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:00,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:00,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:00,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:01,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:01,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:01,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:01,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:01,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:01,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:01,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:01,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-11-29 19:02:01,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987204232] [2020-11-29 19:02:01,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134855934] [2020-11-29 19:02:01,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:02:01,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:02:01,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:02:01,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-29 19:02:01,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-11-29 19:02:01,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:02:01,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-29 19:02:01,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288595356] [2020-11-29 19:02:01,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-29 19:02:01,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:02:01,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-29 19:02:01,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=284, Unknown=0, NotChecked=0, Total=462 [2020-11-29 19:02:01,530 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 22 states. [2020-11-29 19:02:01,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:02:01,859 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-11-29 19:02:01,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 19:02:01,859 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 106 [2020-11-29 19:02:01,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:02:01,860 INFO L225 Difference]: With dead ends: 67 [2020-11-29 19:02:01,860 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 19:02:01,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=535, Invalid=947, Unknown=0, NotChecked=0, Total=1482 [2020-11-29 19:02:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 19:02:01,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-29 19:02:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-29 19:02:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-11-29 19:02:01,867 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 106 [2020-11-29 19:02:01,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:02:01,867 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-11-29 19:02:01,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-29 19:02:01,867 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-11-29 19:02:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-29 19:02:01,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:02:01,869 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:02:02,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 19:02:02,081 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:02:02,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:02:02,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1604689196, now seen corresponding path program 17 times [2020-11-29 19:02:02,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:02:02,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094238801] [2020-11-29 19:02:02,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:02:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-11-29 19:02:02,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094238801] [2020-11-29 19:02:02,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781046761] [2020-11-29 19:02:02,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:02:03,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-29 19:02:03,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:02:03,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-29 19:02:03,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-11-29 19:02:03,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:02:03,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-29 19:02:03,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985277653] [2020-11-29 19:02:03,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-29 19:02:03,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:02:03,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-29 19:02:03,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2020-11-29 19:02:03,093 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-11-29 19:02:03,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:02:03,431 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-11-29 19:02:03,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 19:02:03,432 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 112 [2020-11-29 19:02:03,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:02:03,433 INFO L225 Difference]: With dead ends: 70 [2020-11-29 19:02:03,433 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 19:02:03,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=593, Invalid=1047, Unknown=0, NotChecked=0, Total=1640 [2020-11-29 19:02:03,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 19:02:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-29 19:02:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-29 19:02:03,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-11-29 19:02:03,439 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 112 [2020-11-29 19:02:03,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:02:03,440 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-11-29 19:02:03,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-29 19:02:03,440 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-11-29 19:02:03,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-11-29 19:02:03,442 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:02:03,442 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:02:03,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 19:02:03,661 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:02:03,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:02:03,662 INFO L82 PathProgramCache]: Analyzing trace with hash 427935434, now seen corresponding path program 18 times [2020-11-29 19:02:03,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:02:03,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897373234] [2020-11-29 19:02:03,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:02:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:03,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:03,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:03,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:03,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:03,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:03,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:03,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:04,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:04,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:04,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:04,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:04,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:04,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:04,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:04,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:04,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:04,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-11-29 19:02:04,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897373234] [2020-11-29 19:02:04,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124542168] [2020-11-29 19:02:04,540 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:02:04,663 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-29 19:02:04,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:02:04,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-29 19:02:04,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-11-29 19:02:04,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:02:04,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-29 19:02:04,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177221314] [2020-11-29 19:02:04,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-29 19:02:04,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:02:04,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-29 19:02:04,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=335, Unknown=0, NotChecked=0, Total=552 [2020-11-29 19:02:04,775 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 24 states. [2020-11-29 19:02:05,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:02:05,130 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-11-29 19:02:05,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-29 19:02:05,130 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 118 [2020-11-29 19:02:05,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:02:05,131 INFO L225 Difference]: With dead ends: 73 [2020-11-29 19:02:05,131 INFO L226 Difference]: Without dead ends: 69 [2020-11-29 19:02:05,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=654, Invalid=1152, Unknown=0, NotChecked=0, Total=1806 [2020-11-29 19:02:05,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-29 19:02:05,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-11-29 19:02:05,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-29 19:02:05,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-11-29 19:02:05,138 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 118 [2020-11-29 19:02:05,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:02:05,138 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-11-29 19:02:05,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-29 19:02:05,138 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-11-29 19:02:05,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-11-29 19:02:05,140 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:02:05,140 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:02:05,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:02:05,353 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:02:05,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:02:05,354 INFO L82 PathProgramCache]: Analyzing trace with hash 653428628, now seen corresponding path program 19 times [2020-11-29 19:02:05,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:02:05,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934154811] [2020-11-29 19:02:05,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:02:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:05,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:05,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:05,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:05,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:05,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:05,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:05,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:05,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:05,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:05,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:05,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:05,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:06,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:06,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:06,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:06,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:06,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:06,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-11-29 19:02:06,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934154811] [2020-11-29 19:02:06,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88146732] [2020-11-29 19:02:06,393 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:02:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:06,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 42 conjunts are in the unsatisfiable core [2020-11-29 19:02:06,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-11-29 19:02:06,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:02:06,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-11-29 19:02:06,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311322192] [2020-11-29 19:02:06,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-29 19:02:06,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:02:06,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-29 19:02:06,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=362, Unknown=0, NotChecked=0, Total=600 [2020-11-29 19:02:06,602 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 25 states. [2020-11-29 19:02:07,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:02:07,025 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-11-29 19:02:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-29 19:02:07,025 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 124 [2020-11-29 19:02:07,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:02:07,026 INFO L225 Difference]: With dead ends: 76 [2020-11-29 19:02:07,027 INFO L226 Difference]: Without dead ends: 72 [2020-11-29 19:02:07,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=718, Invalid=1262, Unknown=0, NotChecked=0, Total=1980 [2020-11-29 19:02:07,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-29 19:02:07,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-11-29 19:02:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-29 19:02:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2020-11-29 19:02:07,032 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 124 [2020-11-29 19:02:07,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:02:07,033 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2020-11-29 19:02:07,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-29 19:02:07,033 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2020-11-29 19:02:07,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-29 19:02:07,034 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:02:07,035 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:02:07,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:02:07,253 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:02:07,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:02:07,254 INFO L82 PathProgramCache]: Analyzing trace with hash -693736694, now seen corresponding path program 20 times [2020-11-29 19:02:07,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:02:07,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39215784] [2020-11-29 19:02:07,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:02:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:07,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:08,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:08,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:08,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:08,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-11-29 19:02:08,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39215784] [2020-11-29 19:02:08,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516229470] [2020-11-29 19:02:08,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:02:08,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:02:08,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:02:08,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 44 conjunts are in the unsatisfiable core [2020-11-29 19:02:08,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:08,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-11-29 19:02:08,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:02:08,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-29 19:02:08,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915021284] [2020-11-29 19:02:08,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-29 19:02:08,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:02:08,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-29 19:02:08,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=390, Unknown=0, NotChecked=0, Total=650 [2020-11-29 19:02:08,625 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 26 states. [2020-11-29 19:02:09,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:02:09,010 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-11-29 19:02:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-29 19:02:09,013 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 130 [2020-11-29 19:02:09,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:02:09,015 INFO L225 Difference]: With dead ends: 79 [2020-11-29 19:02:09,015 INFO L226 Difference]: Without dead ends: 75 [2020-11-29 19:02:09,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=785, Invalid=1377, Unknown=0, NotChecked=0, Total=2162 [2020-11-29 19:02:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-29 19:02:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-11-29 19:02:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-29 19:02:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-11-29 19:02:09,022 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 130 [2020-11-29 19:02:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:02:09,023 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-11-29 19:02:09,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-29 19:02:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-11-29 19:02:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-29 19:02:09,024 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:02:09,025 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:02:09,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-29 19:02:09,241 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:02:09,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:02:09,242 INFO L82 PathProgramCache]: Analyzing trace with hash 205241428, now seen corresponding path program 21 times [2020-11-29 19:02:09,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:02:09,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489082299] [2020-11-29 19:02:09,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:02:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:09,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:09,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:09,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:09,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:09,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:09,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:09,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:09,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:09,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:09,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:09,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:09,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:10,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:10,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:10,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:10,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:10,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:10,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:10,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:10,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:10,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:10,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-11-29 19:02:10,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489082299] [2020-11-29 19:02:10,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249837085] [2020-11-29 19:02:10,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:02:10,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-11-29 19:02:10,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:02:10,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 46 conjunts are in the unsatisfiable core [2020-11-29 19:02:10,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-11-29 19:02:10,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:02:10,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-29 19:02:10,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817235964] [2020-11-29 19:02:10,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-29 19:02:10,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:02:10,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-29 19:02:10,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=419, Unknown=0, NotChecked=0, Total=702 [2020-11-29 19:02:10,978 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 27 states. [2020-11-29 19:02:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:02:11,349 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-11-29 19:02:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-29 19:02:11,351 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 136 [2020-11-29 19:02:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:02:11,352 INFO L225 Difference]: With dead ends: 82 [2020-11-29 19:02:11,352 INFO L226 Difference]: Without dead ends: 78 [2020-11-29 19:02:11,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=855, Invalid=1497, Unknown=0, NotChecked=0, Total=2352 [2020-11-29 19:02:11,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-29 19:02:11,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-11-29 19:02:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-29 19:02:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-11-29 19:02:11,358 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 136 [2020-11-29 19:02:11,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:02:11,358 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-11-29 19:02:11,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-29 19:02:11,358 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-11-29 19:02:11,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-11-29 19:02:11,360 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:02:11,360 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:02:11,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-29 19:02:11,560 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:02:11,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:02:11,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1446609078, now seen corresponding path program 22 times [2020-11-29 19:02:11,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:02:11,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477309250] [2020-11-29 19:02:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:02:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:11,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:11,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:11,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:11,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:12,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:13,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-11-29 19:02:13,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477309250] [2020-11-29 19:02:13,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005982159] [2020-11-29 19:02:13,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:02:13,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:02:13,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:02:13,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 48 conjunts are in the unsatisfiable core [2020-11-29 19:02:13,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-11-29 19:02:13,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:02:13,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-29 19:02:13,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795545408] [2020-11-29 19:02:13,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-29 19:02:13,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:02:13,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-29 19:02:13,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756 [2020-11-29 19:02:13,557 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 28 states. [2020-11-29 19:02:14,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:02:14,007 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-11-29 19:02:14,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-29 19:02:14,008 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 142 [2020-11-29 19:02:14,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:02:14,009 INFO L225 Difference]: With dead ends: 85 [2020-11-29 19:02:14,009 INFO L226 Difference]: Without dead ends: 81 [2020-11-29 19:02:14,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=928, Invalid=1622, Unknown=0, NotChecked=0, Total=2550 [2020-11-29 19:02:14,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-29 19:02:14,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-11-29 19:02:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-29 19:02:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-11-29 19:02:14,015 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 142 [2020-11-29 19:02:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:02:14,015 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-11-29 19:02:14,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-29 19:02:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-11-29 19:02:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-29 19:02:14,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:02:14,017 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:02:14,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:02:14,229 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:02:14,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:02:14,230 INFO L82 PathProgramCache]: Analyzing trace with hash 12189972, now seen corresponding path program 23 times [2020-11-29 19:02:14,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:02:14,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358091463] [2020-11-29 19:02:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:02:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:14,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:15,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:15,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:15,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:15,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:15,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:15,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:15,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:15,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:15,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-11-29 19:02:15,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358091463] [2020-11-29 19:02:15,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373656241] [2020-11-29 19:02:15,725 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:02:15,854 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-11-29 19:02:15,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:02:15,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 50 conjunts are in the unsatisfiable core [2020-11-29 19:02:15,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-11-29 19:02:16,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:02:16,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-29 19:02:16,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477023235] [2020-11-29 19:02:16,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-29 19:02:16,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:02:16,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-29 19:02:16,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=480, Unknown=0, NotChecked=0, Total=812 [2020-11-29 19:02:16,007 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 29 states. [2020-11-29 19:02:16,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:02:16,459 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2020-11-29 19:02:16,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-29 19:02:16,459 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 148 [2020-11-29 19:02:16,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:02:16,460 INFO L225 Difference]: With dead ends: 88 [2020-11-29 19:02:16,460 INFO L226 Difference]: Without dead ends: 84 [2020-11-29 19:02:16,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1004, Invalid=1752, Unknown=0, NotChecked=0, Total=2756 [2020-11-29 19:02:16,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-29 19:02:16,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-11-29 19:02:16,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-29 19:02:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-11-29 19:02:16,468 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 148 [2020-11-29 19:02:16,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:02:16,468 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-11-29 19:02:16,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-29 19:02:16,468 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-11-29 19:02:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-29 19:02:16,470 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:02:16,470 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:02:16,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-29 19:02:16,681 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:02:16,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:02:16,682 INFO L82 PathProgramCache]: Analyzing trace with hash 236848010, now seen corresponding path program 24 times [2020-11-29 19:02:16,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:02:16,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525747938] [2020-11-29 19:02:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:02:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:16,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:16,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:16,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:16,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-11-29 19:02:18,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525747938] [2020-11-29 19:02:18,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100085423] [2020-11-29 19:02:18,313 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:02:18,464 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2020-11-29 19:02:18,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:02:18,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 52 conjunts are in the unsatisfiable core [2020-11-29 19:02:18,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-11-29 19:02:18,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:02:18,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-11-29 19:02:18,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87440805] [2020-11-29 19:02:18,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-29 19:02:18,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:02:18,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-29 19:02:18,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=512, Unknown=0, NotChecked=0, Total=870 [2020-11-29 19:02:18,590 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 30 states. [2020-11-29 19:02:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:02:19,061 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-11-29 19:02:19,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-29 19:02:19,062 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 154 [2020-11-29 19:02:19,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:02:19,062 INFO L225 Difference]: With dead ends: 91 [2020-11-29 19:02:19,063 INFO L226 Difference]: Without dead ends: 87 [2020-11-29 19:02:19,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1083, Invalid=1887, Unknown=0, NotChecked=0, Total=2970 [2020-11-29 19:02:19,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-29 19:02:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-29 19:02:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-29 19:02:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-11-29 19:02:19,068 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 154 [2020-11-29 19:02:19,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:02:19,068 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-11-29 19:02:19,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-29 19:02:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-11-29 19:02:19,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-11-29 19:02:19,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:02:19,070 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:02:19,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:02:19,270 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:02:19,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:02:19,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1777423828, now seen corresponding path program 25 times [2020-11-29 19:02:19,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:02:19,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202952929] [2020-11-29 19:02:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:02:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:19,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:19,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:19,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:19,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:20,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:20,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:20,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:20,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:20,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:20,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:20,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:20,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:21,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:21,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:21,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:21,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:21,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:21,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:22,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:22,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:22,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:22,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:22,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:22,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:22,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:23,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:02:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 924 proven. 50 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2020-11-29 19:02:23,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202952929] [2020-11-29 19:02:23,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57691664] [2020-11-29 19:02:23,895 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/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 [2020-11-29 19:02:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:24,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 217 conjunts are in the unsatisfiable core [2020-11-29 19:02:24,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 49 proven. 950 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2020-11-29 19:02:29,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:02:29,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 59] total 114 [2020-11-29 19:02:29,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812277375] [2020-11-29 19:02:29,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 114 states [2020-11-29 19:02:29,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:02:29,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2020-11-29 19:02:29,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=835, Invalid=12047, Unknown=0, NotChecked=0, Total=12882 [2020-11-29 19:02:29,206 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 114 states. [2020-11-29 19:02:37,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:02:37,209 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2020-11-29 19:02:37,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-11-29 19:02:37,211 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 160 [2020-11-29 19:02:37,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:02:37,211 INFO L225 Difference]: With dead ends: 90 [2020-11-29 19:02:37,211 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:02:37,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5333 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1975, Invalid=26755, Unknown=0, NotChecked=0, Total=28730 [2020-11-29 19:02:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:02:37,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:02:37,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:02:37,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:02:37,218 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-11-29 19:02:37,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:02:37,218 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:02:37,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 114 states. [2020-11-29 19:02:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:02:37,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:02:37,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-11-29 19:02:37,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 19:02:37,462 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 19:02:37,462 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 19:02:37,462 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 19:02:37,462 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 19:02:37,462 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 19:02:37,462 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-11-29 19:02:37,462 INFO L274 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-11-29 19:02:37,463 INFO L270 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 25) (= ULTIMATE.start_main_~b~0 0)) [2020-11-29 19:02:37,463 INFO L274 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-11-29 19:02:37,463 INFO L274 CegarLoopResult]: For program point L13(lines 13 20) no Hoare annotation was computed. [2020-11-29 19:02:37,463 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 19:02:37,463 INFO L274 CegarLoopResult]: For program point sumEXIT(lines 5 11) no Hoare annotation was computed. [2020-11-29 19:02:37,463 INFO L270 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (<= 1 sum_~n) (= sum_~m |sum_#in~m|)) [2020-11-29 19:02:37,463 INFO L274 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-11-29 19:02:37,463 INFO L274 CegarLoopResult]: For program point L6(lines 6 10) no Hoare annotation was computed. [2020-11-29 19:02:37,464 INFO L274 CegarLoopResult]: For program point sumFINAL(lines 5 11) no Hoare annotation was computed. [2020-11-29 19:02:37,464 INFO L277 CegarLoopResult]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true [2020-11-29 19:02:37,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:02:37 BoogieIcfgContainer [2020-11-29 19:02:37,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:02:37,472 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:02:37,473 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:02:37,473 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:02:37,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:44" (3/4) ... [2020-11-29 19:02:37,478 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:02:37,486 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2020-11-29 19:02:37,492 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-29 19:02:37,493 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-29 19:02:37,493 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:02:37,494 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:02:37,538 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_890fdd0c-b8fe-4565-b3ec-3e694791ef3f/bin/uautomizer/witness.graphml [2020-11-29 19:02:37,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:02:37,539 INFO L168 Benchmark]: Toolchain (without parser) took 53446.13 ms. Allocated memory was 88.1 MB in the beginning and 708.8 MB in the end (delta: 620.8 MB). Free memory was 51.8 MB in the beginning and 382.3 MB in the end (delta: -330.5 MB). Peak memory consumption was 290.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:02:37,540 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory was 67.7 MB in the beginning and 67.6 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:02:37,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.40 ms. Allocated memory is still 88.1 MB. Free memory was 51.6 MB in the beginning and 65.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:02:37,541 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.42 ms. Allocated memory is still 88.1 MB. Free memory was 65.2 MB in the beginning and 63.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:02:37,541 INFO L168 Benchmark]: Boogie Preprocessor took 20.80 ms. Allocated memory is still 88.1 MB. Free memory was 63.8 MB in the beginning and 62.9 MB in the end (delta: 887.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:02:37,542 INFO L168 Benchmark]: RCFGBuilder took 319.90 ms. Allocated memory is still 88.1 MB. Free memory was 62.9 MB in the beginning and 52.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:02:37,542 INFO L168 Benchmark]: TraceAbstraction took 52682.69 ms. Allocated memory was 88.1 MB in the beginning and 708.8 MB in the end (delta: 620.8 MB). Free memory was 51.6 MB in the beginning and 384.4 MB in the end (delta: -332.8 MB). Peak memory consumption was 289.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:02:37,543 INFO L168 Benchmark]: Witness Printer took 65.55 ms. Allocated memory is still 708.8 MB. Free memory was 384.4 MB in the beginning and 382.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:02:37,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory was 67.7 MB in the beginning and 67.6 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.40 ms. Allocated memory is still 88.1 MB. Free memory was 51.6 MB in the beginning and 65.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.42 ms. Allocated memory is still 88.1 MB. Free memory was 65.2 MB in the beginning and 63.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.80 ms. Allocated memory is still 88.1 MB. Free memory was 63.8 MB in the beginning and 62.9 MB in the end (delta: 887.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 319.90 ms. Allocated memory is still 88.1 MB. Free memory was 62.9 MB in the beginning and 52.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 52682.69 ms. Allocated memory was 88.1 MB in the beginning and 708.8 MB in the end (delta: 620.8 MB). Free memory was 51.6 MB in the beginning and 384.4 MB in the end (delta: -332.8 MB). Peak memory consumption was 289.1 MB. Max. memory is 16.1 GB. * Witness Printer took 65.55 ms. Allocated memory is still 708.8 MB. Free memory was 384.4 MB in the beginning and 382.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 52.5s, OverallIterations: 26, TraceHistogramMax: 26, AutomataDifference: 14.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 258 SDtfs, 1216 SDslu, 2986 SDs, 0 SdLazy, 4837 SolverSat, 412 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3715 GetRequests, 2823 SyntacticMatches, 0 SemanticMatches, 892 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10533 ImplicationChecksByTransitivity, 24.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 18 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 28.2s InterpolantComputationTime, 4410 NumberOfCodeBlocks, 4410 NumberOfCodeBlocksAsserted, 223 NumberOfCheckSat, 4359 ConstructedInterpolants, 0 QuantifiedInterpolants, 1463982 SizeOfPredicates, 379 NumberOfNonLiveVariables, 7275 ConjunctsInSsa, 913 ConjunctsInUnsatCore, 51 InterpolantComputations, 1 PerfectInterpolantSequences, 17800/33800 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...