./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.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_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 6eb545a456a66b29ef54dda1fc01800b021f2fd2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:15:57,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:15:57,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:15:57,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:15:57,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:15:57,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:15:57,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:15:57,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:15:57,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:15:57,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:15:57,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:15:57,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:15:57,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:15:57,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:15:57,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:15:57,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:15:57,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:15:57,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:15:57,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:15:57,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:15:57,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:15:57,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:15:57,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:15:57,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:15:57,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:15:57,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:15:57,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:15:57,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:15:57,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:15:57,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:15:57,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:15:57,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:15:57,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:15:57,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:15:57,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:15:57,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:15:57,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:15:57,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:15:57,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:15:57,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:15:57,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:15:57,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:15:57,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:15:57,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:15:57,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:15:57,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:15:57,964 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:15:57,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:15:57,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:15:57,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:15:57,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:15:57,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:15:57,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:15:57,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:15:57,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:15:57,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:15:57,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:15:57,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:15:57,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:15:57,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:15:57,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:15:57,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:15:57,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:15:57,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:15:57,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:15:57,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:15:57,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:15:57,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:15:57,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:15:57,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:15:57,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:15:57,974 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_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6eb545a456a66b29ef54dda1fc01800b021f2fd2 [2020-11-28 03:15:58,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:15:58,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:15:58,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:15:58,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:15:58,341 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:15:58,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2020-11-28 03:15:58,436 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/bin/uautomizer/data/a073c6afa/2df6fc01f1d1401185138652a2987148/FLAG463d85a6e [2020-11-28 03:15:58,947 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:15:58,948 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2020-11-28 03:15:58,955 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/bin/uautomizer/data/a073c6afa/2df6fc01f1d1401185138652a2987148/FLAG463d85a6e [2020-11-28 03:15:59,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/bin/uautomizer/data/a073c6afa/2df6fc01f1d1401185138652a2987148 [2020-11-28 03:15:59,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:15:59,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:15:59,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:15:59,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:15:59,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:15:59,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:59" (1/1) ... [2020-11-28 03:15:59,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@785c6700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59, skipping insertion in model container [2020-11-28 03:15:59,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:59" (1/1) ... [2020-11-28 03:15:59,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:15:59,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:15:59,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:15:59,584 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:15:59,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:15:59,623 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:15:59,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59 WrapperNode [2020-11-28 03:15:59,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:15:59,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:15:59,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:15:59,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:15:59,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2020-11-28 03:15:59,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2020-11-28 03:15:59,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:15:59,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:15:59,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:15:59,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:15:59,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2020-11-28 03:15:59,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2020-11-28 03:15:59,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2020-11-28 03:15:59,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2020-11-28 03:15:59,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2020-11-28 03:15:59,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2020-11-28 03:15:59,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2020-11-28 03:15:59,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:15:59,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:15:59,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:15:59,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:15:59,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:15:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:15:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:15:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:15:59,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:00,258 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:00,258 INFO L298 CfgBuilder]: Removed 41 assume(true) statements. [2020-11-28 03:16:00,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:00 BoogieIcfgContainer [2020-11-28 03:16:00,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:00,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:16:00,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:16:00,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:16:00,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:15:59" (1/3) ... [2020-11-28 03:16:00,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c84b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:00, skipping insertion in model container [2020-11-28 03:16:00,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (2/3) ... [2020-11-28 03:16:00,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c84b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:00, skipping insertion in model container [2020-11-28 03:16:00,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:00" (3/3) ... [2020-11-28 03:16:00,272 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.c [2020-11-28 03:16:00,281 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:16:00,287 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 03:16:00,301 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 03:16:00,329 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:16:00,329 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:16:00,330 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:16:00,330 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:00,330 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:00,330 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:16:00,330 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:00,330 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:16:00,347 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-28 03:16:00,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:16:00,352 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:00,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:00,353 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:00,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:00,358 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-11-28 03:16:00,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:00,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204693674] [2020-11-28 03:16:00,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:00,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204693674] [2020-11-28 03:16:00,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:00,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:16:00,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783623278] [2020-11-28 03:16:00,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:16:00,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:00,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:16:00,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:16:00,537 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-11-28 03:16:00,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:00,559 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2020-11-28 03:16:00,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:16:00,561 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 03:16:00,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:00,570 INFO L225 Difference]: With dead ends: 85 [2020-11-28 03:16:00,571 INFO L226 Difference]: Without dead ends: 40 [2020-11-28 03:16:00,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:16:00,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-28 03:16:00,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-28 03:16:00,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 03:16:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-11-28 03:16:00,612 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2020-11-28 03:16:00,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:00,613 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-11-28 03:16:00,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:16:00,613 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-11-28 03:16:00,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:16:00,614 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:00,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:00,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:16:00,615 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:00,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:00,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-11-28 03:16:00,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:00,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165824064] [2020-11-28 03:16:00,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:00,647 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:00,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960642023] [2020-11-28 03:16:00,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:16:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:00,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:16:00,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:00,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:00,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165824064] [2020-11-28 03:16:00,891 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:00,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960642023] [2020-11-28 03:16:00,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:00,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:00,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475268687] [2020-11-28 03:16:00,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:00,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:00,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:00,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:00,894 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 4 states. [2020-11-28 03:16:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:01,088 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-11-28 03:16:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:16:01,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 03:16:01,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:01,092 INFO L225 Difference]: With dead ends: 70 [2020-11-28 03:16:01,092 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 03:16:01,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:01,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 03:16:01,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-11-28 03:16:01,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 03:16:01,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-11-28 03:16:01,111 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 13 [2020-11-28 03:16:01,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:01,111 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-11-28 03:16:01,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:01,112 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-11-28 03:16:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:16:01,112 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:01,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:01,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:16:01,327 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:01,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:01,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1454273793, now seen corresponding path program 1 times [2020-11-28 03:16:01,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:01,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252267565] [2020-11-28 03:16:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:01,356 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:01,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258048105] [2020-11-28 03:16:01,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:16:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:01,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:16:01,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:01,462 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:16:01,462 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:01,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252267565] [2020-11-28 03:16:01,551 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:01,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258048105] [2020-11-28 03:16:01,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:01,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:16:01,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320473797] [2020-11-28 03:16:01,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:01,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:01,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:01,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:01,555 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 6 states. [2020-11-28 03:16:01,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:01,908 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-11-28 03:16:01,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:16:01,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 03:16:01,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:01,912 INFO L225 Difference]: With dead ends: 83 [2020-11-28 03:16:01,912 INFO L226 Difference]: Without dead ends: 81 [2020-11-28 03:16:01,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:16:01,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-28 03:16:01,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 61. [2020-11-28 03:16:01,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-28 03:16:01,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-11-28 03:16:01,939 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 15 [2020-11-28 03:16:01,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:01,939 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-11-28 03:16:01,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:01,939 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-11-28 03:16:01,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:16:01,940 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:01,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:02,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:02,141 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:02,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:02,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1692931460, now seen corresponding path program 1 times [2020-11-28 03:16:02,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:02,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063824732] [2020-11-28 03:16:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:02,164 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:02,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197851729] [2020-11-28 03:16:02,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:16:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:02,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:16:02,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:02,252 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:16:02,252 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:02,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063824732] [2020-11-28 03:16:02,330 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:02,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197851729] [2020-11-28 03:16:02,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:02,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:16:02,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047704632] [2020-11-28 03:16:02,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:02,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:02,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:02,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:02,332 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 6 states. [2020-11-28 03:16:02,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:02,578 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2020-11-28 03:16:02,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:16:02,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-28 03:16:02,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:02,581 INFO L225 Difference]: With dead ends: 94 [2020-11-28 03:16:02,581 INFO L226 Difference]: Without dead ends: 86 [2020-11-28 03:16:02,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:16:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-28 03:16:02,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2020-11-28 03:16:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 03:16:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-11-28 03:16:02,613 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 17 [2020-11-28 03:16:02,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:02,613 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-11-28 03:16:02,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-11-28 03:16:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:16:02,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:02,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:02,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:02,819 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:02,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:02,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1673934348, now seen corresponding path program 1 times [2020-11-28 03:16:02,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:02,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65472000] [2020-11-28 03:16:02,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:02,832 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:02,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271902814] [2020-11-28 03:16:02,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:16:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:02,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:16:02,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:02,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65472000] [2020-11-28 03:16:02,980 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:02,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271902814] [2020-11-28 03:16:02,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:02,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:02,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932325915] [2020-11-28 03:16:02,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:02,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:02,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:02,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:02,982 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 4 states. [2020-11-28 03:16:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:03,131 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-11-28 03:16:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:16:03,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-28 03:16:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:03,136 INFO L225 Difference]: With dead ends: 74 [2020-11-28 03:16:03,136 INFO L226 Difference]: Without dead ends: 72 [2020-11-28 03:16:03,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:03,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-28 03:16:03,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-11-28 03:16:03,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-28 03:16:03,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2020-11-28 03:16:03,155 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 20 [2020-11-28 03:16:03,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:03,157 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2020-11-28 03:16:03,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2020-11-28 03:16:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:16:03,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:03,159 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:03,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:03,374 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:03,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:03,375 INFO L82 PathProgramCache]: Analyzing trace with hash -350771232, now seen corresponding path program 1 times [2020-11-28 03:16:03,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:03,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336782602] [2020-11-28 03:16:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:03,407 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:03,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171791081] [2020-11-28 03:16:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:16:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:03,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:16:03,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:16:03,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336782602] [2020-11-28 03:16:03,556 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:03,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171791081] [2020-11-28 03:16:03,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:03,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-28 03:16:03,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562236616] [2020-11-28 03:16:03,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:03,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:03,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:03,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:03,559 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand 4 states. [2020-11-28 03:16:03,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:03,695 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-11-28 03:16:03,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:16:03,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-28 03:16:03,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:03,697 INFO L225 Difference]: With dead ends: 80 [2020-11-28 03:16:03,697 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 03:16:03,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:03,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 03:16:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-11-28 03:16:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 03:16:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2020-11-28 03:16:03,713 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 21 [2020-11-28 03:16:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:03,714 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2020-11-28 03:16:03,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2020-11-28 03:16:03,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:16:03,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:03,716 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:03,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 03:16:03,930 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:03,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:03,930 INFO L82 PathProgramCache]: Analyzing trace with hash -350711650, now seen corresponding path program 1 times [2020-11-28 03:16:03,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:03,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646038575] [2020-11-28 03:16:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:03,954 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:03,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477479885] [2020-11-28 03:16:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:16:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:16:04,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:16:04,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646038575] [2020-11-28 03:16:04,049 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:04,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477479885] [2020-11-28 03:16:04,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:04,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-28 03:16:04,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238419051] [2020-11-28 03:16:04,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:04,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:04,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:04,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:04,051 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 4 states. [2020-11-28 03:16:04,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:04,164 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-11-28 03:16:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:16:04,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-28 03:16:04,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:04,165 INFO L225 Difference]: With dead ends: 88 [2020-11-28 03:16:04,165 INFO L226 Difference]: Without dead ends: 84 [2020-11-28 03:16:04,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:04,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-28 03:16:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2020-11-28 03:16:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-28 03:16:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-11-28 03:16:04,183 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 21 [2020-11-28 03:16:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:04,184 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-11-28 03:16:04,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:04,184 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-11-28 03:16:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:16:04,185 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:04,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:04,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:04,410 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:04,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:04,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1962016375, now seen corresponding path program 1 times [2020-11-28 03:16:04,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:04,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98277613] [2020-11-28 03:16:04,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:04,434 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:04,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814293814] [2020-11-28 03:16:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:16:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:16:04,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:04,556 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:16:04,557 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:04,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98277613] [2020-11-28 03:16:04,613 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:04,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814293814] [2020-11-28 03:16:04,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:04,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:16:04,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699838505] [2020-11-28 03:16:04,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:04,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:04,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:04,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:04,614 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 6 states. [2020-11-28 03:16:04,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:04,948 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-11-28 03:16:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:16:04,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-28 03:16:04,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:04,950 INFO L225 Difference]: With dead ends: 80 [2020-11-28 03:16:04,950 INFO L226 Difference]: Without dead ends: 72 [2020-11-28 03:16:04,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:16:04,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-28 03:16:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-11-28 03:16:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-28 03:16:04,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-11-28 03:16:04,971 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 22 [2020-11-28 03:16:04,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:04,973 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-11-28 03:16:04,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:04,974 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-11-28 03:16:04,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:16:04,975 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:04,976 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:05,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:05,190 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:05,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:05,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2083517661, now seen corresponding path program 1 times [2020-11-28 03:16:05,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:05,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94209041] [2020-11-28 03:16:05,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:05,205 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:05,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981874072] [2020-11-28 03:16:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:16:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:05,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-28 03:16:05,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:05,309 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 03:16:05,310 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:05,353 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:16:05,353 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:05,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94209041] [2020-11-28 03:16:05,513 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:05,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981874072] [2020-11-28 03:16:05,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:05,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-28 03:16:05,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455996550] [2020-11-28 03:16:05,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:16:05,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:05,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:16:05,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:16:05,515 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 9 states. [2020-11-28 03:16:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:06,236 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-11-28 03:16:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:16:06,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-28 03:16:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:06,238 INFO L225 Difference]: With dead ends: 105 [2020-11-28 03:16:06,238 INFO L226 Difference]: Without dead ends: 103 [2020-11-28 03:16:06,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:16:06,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-28 03:16:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2020-11-28 03:16:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 03:16:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-11-28 03:16:06,265 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 23 [2020-11-28 03:16:06,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:06,266 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-11-28 03:16:06,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:16:06,266 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-11-28 03:16:06,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:16:06,268 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:06,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:06,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-28 03:16:06,482 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:06,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:06,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1614871324, now seen corresponding path program 1 times [2020-11-28 03:16:06,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:06,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972293892] [2020-11-28 03:16:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:06,492 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:06,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010135348] [2020-11-28 03:16:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:16:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-28 03:16:06,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:06,587 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 03:16:06,587 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:06,623 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:16:06,623 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:06,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972293892] [2020-11-28 03:16:06,834 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:06,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010135348] [2020-11-28 03:16:06,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:06,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-28 03:16:06,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355360897] [2020-11-28 03:16:06,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:16:06,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:06,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:16:06,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:16:06,837 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 10 states. [2020-11-28 03:16:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:07,374 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2020-11-28 03:16:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:16:07,375 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-11-28 03:16:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:07,376 INFO L225 Difference]: With dead ends: 116 [2020-11-28 03:16:07,376 INFO L226 Difference]: Without dead ends: 104 [2020-11-28 03:16:07,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:16:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-28 03:16:07,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2020-11-28 03:16:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-28 03:16:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2020-11-28 03:16:07,414 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 25 [2020-11-28 03:16:07,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:07,414 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2020-11-28 03:16:07,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:16:07,414 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2020-11-28 03:16:07,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 03:16:07,415 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:07,416 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:07,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:07,634 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:07,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:07,634 INFO L82 PathProgramCache]: Analyzing trace with hash -389708480, now seen corresponding path program 1 times [2020-11-28 03:16:07,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:07,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529858655] [2020-11-28 03:16:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:07,649 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:07,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944719947] [2020-11-28 03:16:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:16:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:16:07,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:07,770 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 03:16:07,770 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:07,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529858655] [2020-11-28 03:16:07,837 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:07,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944719947] [2020-11-28 03:16:07,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:07,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:16:07,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896780339] [2020-11-28 03:16:07,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:16:07,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:07,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:16:07,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:07,840 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 7 states. [2020-11-28 03:16:08,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:08,066 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-11-28 03:16:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:16:08,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-11-28 03:16:08,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:08,068 INFO L225 Difference]: With dead ends: 128 [2020-11-28 03:16:08,068 INFO L226 Difference]: Without dead ends: 98 [2020-11-28 03:16:08,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:16:08,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-28 03:16:08,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2020-11-28 03:16:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-28 03:16:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-11-28 03:16:08,090 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 29 [2020-11-28 03:16:08,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:08,092 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-11-28 03:16:08,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:16:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-11-28 03:16:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 03:16:08,094 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:08,094 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:08,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:08,322 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:08,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:08,322 INFO L82 PathProgramCache]: Analyzing trace with hash -131602624, now seen corresponding path program 2 times [2020-11-28 03:16:08,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:08,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513614277] [2020-11-28 03:16:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:08,338 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:08,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881989087] [2020-11-28 03:16:08,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:16:08,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:16:08,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:16:08,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:16:08,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:08,437 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 03:16:08,437 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:08,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513614277] [2020-11-28 03:16:08,505 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:08,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881989087] [2020-11-28 03:16:08,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:08,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:16:08,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233763296] [2020-11-28 03:16:08,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:16:08,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:08,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:16:08,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:08,507 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-11-28 03:16:08,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:08,739 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2020-11-28 03:16:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:16:08,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-11-28 03:16:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:08,742 INFO L225 Difference]: With dead ends: 100 [2020-11-28 03:16:08,742 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 03:16:08,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:16:08,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 03:16:08,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-11-28 03:16:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-28 03:16:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-11-28 03:16:08,756 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 29 [2020-11-28 03:16:08,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:08,757 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-11-28 03:16:08,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:16:08,757 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-11-28 03:16:08,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 03:16:08,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:08,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:08,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 03:16:08,982 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:08,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:08,982 INFO L82 PathProgramCache]: Analyzing trace with hash -904765627, now seen corresponding path program 2 times [2020-11-28 03:16:08,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:08,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348369066] [2020-11-28 03:16:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:09,006 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:09,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955955856] [2020-11-28 03:16:09,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:16:09,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:16:09,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:16:09,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:16:09,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:09,108 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 03:16:09,108 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:09,149 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:16:09,149 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:09,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348369066] [2020-11-28 03:16:09,211 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:09,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955955856] [2020-11-28 03:16:09,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:09,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 03:16:09,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106588528] [2020-11-28 03:16:09,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:16:09,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:09,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:16:09,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:16:09,212 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 8 states. [2020-11-28 03:16:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:09,461 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-11-28 03:16:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:16:09,462 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-11-28 03:16:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:09,463 INFO L225 Difference]: With dead ends: 84 [2020-11-28 03:16:09,463 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 03:16:09,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:16:09,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 03:16:09,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-28 03:16:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 03:16:09,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-11-28 03:16:09,475 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 31 [2020-11-28 03:16:09,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:09,476 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-11-28 03:16:09,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:16:09,476 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-11-28 03:16:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 03:16:09,478 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:09,478 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:09,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 03:16:09,694 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:09,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:09,694 INFO L82 PathProgramCache]: Analyzing trace with hash 568366148, now seen corresponding path program 2 times [2020-11-28 03:16:09,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:09,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681233478] [2020-11-28 03:16:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:09,720 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:09,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179468913] [2020-11-28 03:16:09,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/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 [2020-11-28 03:16:09,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:16:09,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:16:09,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 03:16:09,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:09,842 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 03:16:09,842 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:09,878 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:16:09,878 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:09,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681233478] [2020-11-28 03:16:09,961 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:09,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179468913] [2020-11-28 03:16:09,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:09,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-28 03:16:09,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219855877] [2020-11-28 03:16:09,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:16:09,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:09,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:16:09,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:16:09,963 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 9 states. [2020-11-28 03:16:10,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:10,196 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-11-28 03:16:10,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:16:10,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-11-28 03:16:10,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:10,197 INFO L225 Difference]: With dead ends: 66 [2020-11-28 03:16:10,197 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:16:10,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:16:10,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:16:10,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:16:10,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:16:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:16:10,198 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-11-28 03:16:10,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:10,199 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:16:10,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:16:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:16:10,199 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:16:10,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-28 03:16:10,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:16:10,903 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-11-28 03:16:11,053 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-11-28 03:16:11,383 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-11-28 03:16:11,565 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-11-28 03:16:11,849 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-28 03:16:12,093 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-11-28 03:16:12,255 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-11-28 03:16:12,259 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 52) no Hoare annotation was computed. [2020-11-28 03:16:12,259 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:12,259 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-28 03:16:12,260 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~r~0 0)) (.cse3 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)))) (.cse5 (<= 1 ULTIMATE.start_main_~x~0)) (.cse7 (<= ULTIMATE.start_main_~y~0 2)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~p~0 1)) (.cse4 (= ULTIMATE.start_main_~s~0 1)) (.cse8 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse10 (<= 1 ULTIMATE.start_main_~b~0))) (or (and (< 0 ULTIMATE.start_main_~b~0) .cse0 .cse1 (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))) (and (<= ULTIMATE.start_main_~a~0 2) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse8 .cse6 .cse9 .cse10 .cse7) (and (<= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 2) (= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse1 (< 0 ULTIMATE.start_main_~a~0) .cse2 .cse4 .cse8 .cse6 (= (+ ULTIMATE.start_main_~r~0 1) 0) .cse9 .cse10))) [2020-11-28 03:16:12,260 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-28 03:16:12,260 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~r~0 0)) (.cse10 (<= ULTIMATE.start_main_~y~0 2)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)))) (.cse4 (= ULTIMATE.start_main_~s~0 1)) (.cse5 (<= 1 ULTIMATE.start_main_~x~0)) (.cse6 (= ULTIMATE.start_main_~q~0 0)) (.cse7 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse9 (<= 1 ULTIMATE.start_main_~b~0))) (or (and (<= ULTIMATE.start_main_~a~0 2) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and (< 0 ULTIMATE.start_main_~b~0) .cse0 .cse1 (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse2 .cse3 .cse4 .cse5 .cse7 .cse10 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))) (and (<= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 2) (<= ULTIMATE.start_main_~x~0 2) .cse1 (< 0 ULTIMATE.start_main_~a~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9))) [2020-11-28 03:16:12,260 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-28 03:16:12,261 INFO L270 CegarLoopResult]: At program point L11-5(lines 40 41) the Hoare annotation is: (let ((.cse9 (= ULTIMATE.start_main_~r~0 0)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)))) (.cse3 (= ULTIMATE.start_main_~s~0 1)) (.cse4 (<= 1 ULTIMATE.start_main_~x~0)) (.cse5 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse8 (<= 1 ULTIMATE.start_main_~b~0)) (.cse10 (<= ULTIMATE.start_main_~y~0 2))) (or (and (<= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 2) (<= ULTIMATE.start_main_~x~0 2) .cse0 (< 0 ULTIMATE.start_main_~a~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and (< 0 ULTIMATE.start_main_~b~0) .cse9 .cse0 (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse1 .cse2 .cse3 .cse4 .cse6 .cse10 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))) (and (<= ULTIMATE.start_main_~a~0 2) .cse9 .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse10))) [2020-11-28 03:16:12,261 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-28 03:16:12,261 INFO L270 CegarLoopResult]: At program point L11-7(lines 10 16) the Hoare annotation is: (let ((.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= ULTIMATE.start_main_~s~0 1)) (.cse3 (= ULTIMATE.start_main_~p~0 1)) (.cse0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0))) (or (and (= ULTIMATE.start_main_~b~0 .cse0) .cse1 (= ULTIMATE.start_main_~r~0 0) .cse2 (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse3 .cse4 .cse5 .cse6 (<= ULTIMATE.start_main_~y~0 2) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))) (and .cse1 .cse2 .cse4 .cse3 (= ULTIMATE.start_main_~a~0 .cse0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse6 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2020-11-28 03:16:12,261 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-28 03:16:12,262 INFO L270 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: (let ((.cse3 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse8 (= ULTIMATE.start_main_~r~0 0)) (.cse2 (= ULTIMATE.start_main_~p~0 1)) (.cse1 (= ULTIMATE.start_main_~s~0 1)) (.cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse8 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7) (and (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) .cse0 .cse8 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse2 .cse1 .cse6 .cse5 (<= ULTIMATE.start_main_~y~0 2) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))))) [2020-11-28 03:16:12,262 INFO L274 CegarLoopResult]: For program point L11-10(lines 11 14) no Hoare annotation was computed. [2020-11-28 03:16:12,262 INFO L270 CegarLoopResult]: At program point L11-11(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~s~0 1)) (.cse1 (<= 1 ULTIMATE.start_main_~x~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (<= 1 ULTIMATE.start_main_~y~0) .cse0 .cse1 (= ULTIMATE.start_main_~q~0 0) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (not (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)) (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) .cse0 (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse1 .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (<= ULTIMATE.start_main_~y~0 2) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))))) [2020-11-28 03:16:12,262 INFO L274 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-11-28 03:16:12,262 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:12,262 INFO L277 CegarLoopResult]: At program point L11-13(lines 10 16) the Hoare annotation is: true [2020-11-28 03:16:12,262 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:16:12,262 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:16:12,263 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-28 03:16:12,263 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-28 03:16:12,263 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-28 03:16:12,263 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-28 03:16:12,263 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-28 03:16:12,263 INFO L274 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-11-28 03:16:12,263 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2020-11-28 03:16:12,263 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:12,263 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:12,263 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:12,263 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-11-28 03:16:12,264 INFO L274 CegarLoopResult]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2020-11-28 03:16:12,264 INFO L274 CegarLoopResult]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2020-11-28 03:16:12,264 INFO L274 CegarLoopResult]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2020-11-28 03:16:12,264 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:16:12,264 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:12,264 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-11-28 03:16:12,264 INFO L274 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-11-28 03:16:12,264 INFO L274 CegarLoopResult]: For program point L8-4(line 8) no Hoare annotation was computed. [2020-11-28 03:16:12,264 INFO L274 CegarLoopResult]: For program point L8-6(line 8) no Hoare annotation was computed. [2020-11-28 03:16:12,264 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:16:12,264 INFO L277 CegarLoopResult]: At program point L58(lines 18 59) the Hoare annotation is: true [2020-11-28 03:16:12,265 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:12,265 INFO L274 CegarLoopResult]: For program point L43(lines 43 51) no Hoare annotation was computed. [2020-11-28 03:16:12,265 INFO L270 CegarLoopResult]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~r~0 0)) (.cse2 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)))) (.cse4 (<= 1 ULTIMATE.start_main_~x~0)) (.cse9 (<= ULTIMATE.start_main_~y~0 2)) (.cse10 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~s~0 1)) (.cse5 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse8 (<= 1 ULTIMATE.start_main_~b~0))) (or (and (<= ULTIMATE.start_main_~a~0 2) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (< 0 ULTIMATE.start_main_~b~0) .cse0 .cse10 .cse2 .cse1 (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse3 .cse4 .cse6 .cse9 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))) (and (<= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 2) (= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse10 (< 0 ULTIMATE.start_main_~a~0) .cse1 .cse3 .cse5 .cse6 (= (+ ULTIMATE.start_main_~r~0 1) 0) .cse7 .cse8))) [2020-11-28 03:16:12,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:16:12 BoogieIcfgContainer [2020-11-28 03:16:12,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:16:12,299 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:16:12,299 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:16:12,299 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:16:12,300 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:00" (3/4) ... [2020-11-28 03:16:12,303 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:16:12,316 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2020-11-28 03:16:12,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:16:12,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:16:12,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:16:12,372 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ad7d3c9e-d7a6-41ac-a44d-f8b4666edcf7/bin/uautomizer/witness.graphml [2020-11-28 03:16:12,372 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:16:12,374 INFO L168 Benchmark]: Toolchain (without parser) took 13058.71 ms. Allocated memory was 146.8 MB in the beginning and 211.8 MB in the end (delta: 65.0 MB). Free memory was 120.4 MB in the beginning and 163.3 MB in the end (delta: -42.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:12,374 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory was 44.6 MB in the beginning and 44.6 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:12,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.82 ms. Allocated memory is still 146.8 MB. Free memory was 120.0 MB in the beginning and 123.9 MB in the end (delta: -3.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:12,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.79 ms. Allocated memory is still 146.8 MB. Free memory was 123.9 MB in the beginning and 122.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:12,376 INFO L168 Benchmark]: Boogie Preprocessor took 35.84 ms. Allocated memory is still 146.8 MB. Free memory was 122.2 MB in the beginning and 120.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:12,376 INFO L168 Benchmark]: RCFGBuilder took 558.86 ms. Allocated memory is still 146.8 MB. Free memory was 120.9 MB in the beginning and 104.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:12,377 INFO L168 Benchmark]: TraceAbstraction took 12035.24 ms. Allocated memory was 146.8 MB in the beginning and 211.8 MB in the end (delta: 65.0 MB). Free memory was 103.7 MB in the beginning and 167.5 MB in the end (delta: -63.8 MB). Peak memory consumption was 101.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:12,377 INFO L168 Benchmark]: Witness Printer took 74.08 ms. Allocated memory is still 211.8 MB. Free memory was 167.5 MB in the beginning and 163.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:12,380 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory was 44.6 MB in the beginning and 44.6 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.82 ms. Allocated memory is still 146.8 MB. Free memory was 120.0 MB in the beginning and 123.9 MB in the end (delta: -3.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.79 ms. Allocated memory is still 146.8 MB. Free memory was 123.9 MB in the beginning and 122.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.84 ms. Allocated memory is still 146.8 MB. Free memory was 122.2 MB in the beginning and 120.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 558.86 ms. Allocated memory is still 146.8 MB. Free memory was 120.9 MB in the beginning and 104.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12035.24 ms. Allocated memory was 146.8 MB in the beginning and 211.8 MB in the end (delta: 65.0 MB). Free memory was 103.7 MB in the beginning and 167.5 MB in the end (delta: -63.8 MB). Peak memory consumption was 101.6 MB. Max. memory is 16.1 GB. * Witness Printer took 74.08 ms. Allocated memory is still 211.8 MB. Free memory was 167.5 MB in the beginning and 163.3 MB in the end (delta: 4.2 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: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((0 < b && r == 0) && 1 <= cond) && q + 1 == 0) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && cond == 1) && y <= 2) && y == b + x) || (((((((((((a <= 2 && r == 0) && 1 <= cond) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) && y <= 2)) || ((((((((((a + b <= 2 && a + y == x) && 1 <= cond) && 0 < a) && p == 1) && s == 1) && q == 0) && cond == 1) && r + 1 == 0) && b == y) && 1 <= b) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((1 <= y && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) || (((((((((!(y == x) && x <= y) && a == p * x + r * y) && s == 1) && q + 1 == 0) && 1 <= x) && cond == 1) && b == a) && y <= 2) && y == b + x) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((a + b <= 2 && x <= 2) && 1 <= cond) && 0 < a) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) || ((((((((((0 < b && r == 0) && 1 <= cond) && q + 1 == 0) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && cond == 1) && y <= 2) && y == b + x)) || (((((((((((a <= 2 && r == 0) && 1 <= cond) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) && y <= 2) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((1 <= y && s == 1) && p == 1) && 1 <= x) && q == 0) && cond == 1) && b == a) && b == y) || ((((((((1 <= y && a == x) && r == 0) && s == 1) && p == 1) && 1 <= x) && q == 0) && cond == 1) && b == y)) || ((((((((((b == p * x + r * y && 1 <= y) && r == 0) && 1 == cond) && q + 1 == 0) && p == 1) && s == 1) && b == a) && cond == 1) && y <= 2) && y == b + x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((a <= 2 && r == 0) && 1 == cond) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) && y <= 2) || ((((((((((0 < b && r == 0) && 1 == cond) && q + 1 == 0) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && cond == 1) && y <= 2) && y == b + x)) || (((((((((((a + b <= 2 && x <= 2) && 1 == cond) && 0 < a) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((a <= 2 && r == 0) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) && y <= 2) || ((((((((((0 < b && r == 0) && 1 <= cond) && a == p * x + r * y) && p == 1) && q + 1 == 0) && s == 1) && 1 <= x) && cond == 1) && y <= 2) && y == b + x)) || ((((((((((a + b <= 2 && a + y == x) && 1 <= cond) && 0 < a) && p == 1) && s == 1) && q == 0) && cond == 1) && r + 1 == 0) && b == y) && 1 <= b) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((b == p * x + r * y && 1 <= y) && r == 0) && 1 == cond) && q + 1 == 0) && p == 1) && s == 1) && b == a) && cond == 1) && y <= 2) && y == b + x) || (((((((((1 <= y && 1 == cond) && s == 1) && p == 1) && a == p * x + r * y) && 1 <= x) && q == 0) && cond == 1) && b == a) && b == y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.0s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 419 SDtfs, 821 SDslu, 770 SDs, 0 SdLazy, 895 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 332 GetRequests, 228 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 112 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 30 NumberOfFragments, 763 HoareAnnotationTreeSize, 9 FomulaSimplifications, 642 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 450 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 298 ConstructedInterpolants, 0 QuantifiedInterpolants, 51351 SizeOfPredicates, 100 NumberOfNonLiveVariables, 1374 ConjunctsInSsa, 190 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 46/74 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...