./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX --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 2e94830d11d546a3c5eb98e6802b079c63f07b0a4b705dd9e7cd9e09e0492555 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:47:17,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:47:17,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:47:17,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:47:17,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:47:17,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:47:17,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:47:17,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:47:17,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:47:17,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:47:17,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:47:17,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:47:17,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:47:17,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:47:17,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:47:17,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:47:17,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:47:17,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:47:17,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:47:17,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:47:17,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:47:17,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:47:17,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:47:17,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:47:17,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:47:17,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:47:17,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:47:17,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:47:17,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:47:17,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:47:17,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:47:17,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:47:17,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:47:17,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:47:17,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:47:17,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:47:17,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:47:17,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:47:17,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:47:17,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:47:17,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:47:17,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:47:17,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:47:17,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:47:17,765 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:47:17,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:47:17,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:47:17,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:47:17,773 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:47:17,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:47:17,774 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:47:17,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:47:17,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:47:17,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:47:17,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:47:17,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:47:17,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:47:17,776 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:47:17,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:47:17,777 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:47:17,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:47:17,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:47:17,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:47:17,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:47:17,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:47:17,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:47:17,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:47:17,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:47:17,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:47:17,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:47:17,779 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:47:17,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:47:17,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:47:17,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:47:17,782 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_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e94830d11d546a3c5eb98e6802b079c63f07b0a4b705dd9e7cd9e09e0492555 [2021-11-09 09:47:18,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:47:18,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:47:18,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:47:18,147 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:47:18,148 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:47:18,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c [2021-11-09 09:47:18,213 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/data/a5fc2b131/02f8596d7b2f455cae44bb0ae0ff48d2/FLAG91ced479b [2021-11-09 09:47:18,653 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:47:18,653 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c [2021-11-09 09:47:18,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/data/a5fc2b131/02f8596d7b2f455cae44bb0ae0ff48d2/FLAG91ced479b [2021-11-09 09:47:19,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/data/a5fc2b131/02f8596d7b2f455cae44bb0ae0ff48d2 [2021-11-09 09:47:19,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:47:19,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:47:19,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:47:19,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:47:19,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:47:19,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:47:19" (1/1) ... [2021-11-09 09:47:19,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f84c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:19, skipping insertion in model container [2021-11-09 09:47:19,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:47:19" (1/1) ... [2021-11-09 09:47:19,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:47:19,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:47:19,290 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c[520,533] [2021-11-09 09:47:19,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:47:19,314 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:47:19,324 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c[520,533] [2021-11-09 09:47:19,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:47:19,343 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:47:19,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:19 WrapperNode [2021-11-09 09:47:19,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:47:19,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:47:19,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:47:19,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:47:19,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:19" (1/1) ... [2021-11-09 09:47:19,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:19" (1/1) ... [2021-11-09 09:47:19,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:47:19,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:47:19,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:47:19,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:47:19,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:19" (1/1) ... [2021-11-09 09:47:19,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:19" (1/1) ... [2021-11-09 09:47:19,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:19" (1/1) ... [2021-11-09 09:47:19,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:19" (1/1) ... [2021-11-09 09:47:19,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:19" (1/1) ... [2021-11-09 09:47:19,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:19" (1/1) ... [2021-11-09 09:47:19,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:19" (1/1) ... [2021-11-09 09:47:19,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:47:19,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:47:19,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:47:19,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:47:19,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:19" (1/1) ... [2021-11-09 09:47:19,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:47:19,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:47:19,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:47:19,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:47:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:47:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:47:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:47:19,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:47:19,713 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:47:19,713 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-11-09 09:47:19,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:47:19 BoogieIcfgContainer [2021-11-09 09:47:19,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:47:19,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:47:19,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:47:19,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:47:19,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:47:19" (1/3) ... [2021-11-09 09:47:19,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca4975f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:47:19, skipping insertion in model container [2021-11-09 09:47:19,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:19" (2/3) ... [2021-11-09 09:47:19,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca4975f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:47:19, skipping insertion in model container [2021-11-09 09:47:19,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:47:19" (3/3) ... [2021-11-09 09:47:19,724 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound10.c [2021-11-09 09:47:19,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:47:19,730 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-09 09:47:19,778 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:47:19,785 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:47:19,785 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-09 09:47:19,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:19,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 09:47:19,805 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:47:19,806 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:47:19,807 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:47:19,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:47:19,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-11-09 09:47:19,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:47:19,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370204380] [2021-11-09 09:47:19,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:19,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:47:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:47:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:47:19,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:47:19,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370204380] [2021-11-09 09:47:19,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370204380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:47:19,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:47:19,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:47:20,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837048844] [2021-11-09 09:47:20,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:47:20,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:47:20,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:47:20,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:47:20,034 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:20,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:47:20,056 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-11-09 09:47:20,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:47:20,058 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-09 09:47:20,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:47:20,065 INFO L225 Difference]: With dead ends: 63 [2021-11-09 09:47:20,066 INFO L226 Difference]: Without dead ends: 29 [2021-11-09 09:47:20,070 INFO L786 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 [2021-11-09 09:47:20,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-09 09:47:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-09 09:47:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-11-09 09:47:20,102 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-11-09 09:47:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:47:20,103 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-11-09 09:47:20,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-11-09 09:47:20,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 09:47:20,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:47:20,106 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:47:20,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:47:20,107 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:47:20,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:47:20,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-11-09 09:47:20,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:47:20,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959273454] [2021-11-09 09:47:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:20,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:47:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:47:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:47:20,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:47:20,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959273454] [2021-11-09 09:47:20,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959273454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:47:20,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:47:20,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:47:20,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430559805] [2021-11-09 09:47:20,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:47:20,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:47:20,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:47:20,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:47:20,291 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:20,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:47:20,418 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-11-09 09:47:20,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:47:20,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-09 09:47:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:47:20,420 INFO L225 Difference]: With dead ends: 54 [2021-11-09 09:47:20,421 INFO L226 Difference]: Without dead ends: 50 [2021-11-09 09:47:20,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:47:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-09 09:47:20,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2021-11-09 09:47:20,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.28125) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-11-09 09:47:20,431 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2021-11-09 09:47:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:47:20,431 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-11-09 09:47:20,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:20,432 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-11-09 09:47:20,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 09:47:20,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:47:20,433 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:47:20,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:47:20,433 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:47:20,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:47:20,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-11-09 09:47:20,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:47:20,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358389331] [2021-11-09 09:47:20,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:20,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:47:20,453 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:47:20,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359182408] [2021-11-09 09:47:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:20,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:47:20,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:47:20,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:47:20,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:47:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:47:20,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:47:20,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:47:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:47:20,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:47:20,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358389331] [2021-11-09 09:47:20,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:47:20,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359182408] [2021-11-09 09:47:20,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359182408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:47:20,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:47:20,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:47:20,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344968814] [2021-11-09 09:47:20,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:47:20,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:47:20,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:47:20,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:47:20,673 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:47:20,738 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-11-09 09:47:20,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:47:20,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-09 09:47:20,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:47:20,740 INFO L225 Difference]: With dead ends: 50 [2021-11-09 09:47:20,740 INFO L226 Difference]: Without dead ends: 46 [2021-11-09 09:47:20,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:47:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-09 09:47:20,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-11-09 09:47:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-11-09 09:47:20,748 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2021-11-09 09:47:20,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:47:20,748 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-11-09 09:47:20,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-11-09 09:47:20,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-09 09:47:20,749 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:47:20,750 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:47:20,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:47:20,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:47:20,951 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:47:20,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:47:20,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-11-09 09:47:20,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:47:20,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146079735] [2021-11-09 09:47:20,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:20,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:47:20,974 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:47:20,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139443935] [2021-11-09 09:47:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:20,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:47:20,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:47:20,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:47:21,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:47:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:47:21,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:47:21,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:47:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:47:21,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:47:21,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146079735] [2021-11-09 09:47:21,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:47:21,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139443935] [2021-11-09 09:47:21,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139443935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:47:21,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:47:21,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:47:21,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692442258] [2021-11-09 09:47:21,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:47:21,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:47:21,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:47:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:47:21,186 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:21,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:47:21,272 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-11-09 09:47:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:47:21,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-09 09:47:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:47:21,278 INFO L225 Difference]: With dead ends: 47 [2021-11-09 09:47:21,278 INFO L226 Difference]: Without dead ends: 37 [2021-11-09 09:47:21,279 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:47:21,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-09 09:47:21,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-11-09 09:47:21,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-11-09 09:47:21,292 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 11 [2021-11-09 09:47:21,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:47:21,293 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-11-09 09:47:21,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:21,294 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-11-09 09:47:21,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 09:47:21,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:47:21,295 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:47:21,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:47:21,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:47:21,509 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:47:21,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:47:21,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1783845574, now seen corresponding path program 1 times [2021-11-09 09:47:21,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:47:21,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384913503] [2021-11-09 09:47:21,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:21,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:47:21,523 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:47:21,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130876599] [2021-11-09 09:47:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:21,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:47:21,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:47:21,525 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:47:21,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:47:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:47:21,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 09:47:21,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:47:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:47:21,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:47:21,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384913503] [2021-11-09 09:47:21,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:47:21,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130876599] [2021-11-09 09:47:21,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130876599] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:47:21,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:47:21,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 09:47:21,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469299023] [2021-11-09 09:47:21,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:47:21,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:47:21,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:47:21,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:47:21,741 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:47:21,854 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-11-09 09:47:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:47:21,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-09 09:47:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:47:21,859 INFO L225 Difference]: With dead ends: 61 [2021-11-09 09:47:21,859 INFO L226 Difference]: Without dead ends: 57 [2021-11-09 09:47:21,861 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:47:21,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-09 09:47:21,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-11-09 09:47:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 44 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2021-11-09 09:47:21,882 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2021-11-09 09:47:21,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:47:21,883 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2021-11-09 09:47:21,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2021-11-09 09:47:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 09:47:21,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:47:21,884 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:47:21,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:47:22,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:47:22,090 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:47:22,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:47:22,091 INFO L85 PathProgramCache]: Analyzing trace with hash -583489763, now seen corresponding path program 1 times [2021-11-09 09:47:22,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:47:22,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740892249] [2021-11-09 09:47:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:22,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:47:22,119 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:47:22,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663164243] [2021-11-09 09:47:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:22,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:47:22,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:47:22,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:47:22,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:47:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:47:22,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 09:47:22,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:47:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:47:22,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:47:22,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740892249] [2021-11-09 09:47:22,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:47:22,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663164243] [2021-11-09 09:47:22,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663164243] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:47:22,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:47:22,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 09:47:22,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462621557] [2021-11-09 09:47:22,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:47:22,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:47:22,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:47:22,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:47:22,383 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:22,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:47:22,486 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-11-09 09:47:22,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:47:22,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-09 09:47:22,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:47:22,489 INFO L225 Difference]: With dead ends: 57 [2021-11-09 09:47:22,490 INFO L226 Difference]: Without dead ends: 53 [2021-11-09 09:47:22,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:47:22,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-09 09:47:22,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2021-11-09 09:47:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:22,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-11-09 09:47:22,506 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 16 [2021-11-09 09:47:22,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:47:22,506 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-11-09 09:47:22,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:22,507 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-11-09 09:47:22,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-09 09:47:22,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:47:22,508 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:47:22,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:47:22,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-09 09:47:22,730 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:47:22,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:47:22,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2021-11-09 09:47:22,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:47:22,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112225247] [2021-11-09 09:47:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:22,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:47:22,746 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:47:22,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134115820] [2021-11-09 09:47:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:22,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:47:22,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:47:22,748 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:47:22,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 09:47:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:47:22,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 09:47:22,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:47:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:47:22,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:47:22,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112225247] [2021-11-09 09:47:22,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:47:22,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134115820] [2021-11-09 09:47:22,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134115820] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:47:22,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:47:22,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 09:47:22,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228471276] [2021-11-09 09:47:22,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:47:22,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:47:22,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:47:22,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:47:22,988 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:23,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:47:23,065 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-11-09 09:47:23,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:47:23,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-09 09:47:23,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:47:23,067 INFO L225 Difference]: With dead ends: 54 [2021-11-09 09:47:23,067 INFO L226 Difference]: Without dead ends: 44 [2021-11-09 09:47:23,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:47:23,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-09 09:47:23,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-11-09 09:47:23,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.162162162162162) internal successors, (43), 42 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-11-09 09:47:23,073 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 18 [2021-11-09 09:47:23,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:47:23,073 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-11-09 09:47:23,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:23,074 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-11-09 09:47:23,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-09 09:47:23,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:47:23,074 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-09 09:47:23,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:47:23,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-09 09:47:23,302 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:47:23,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:47:23,302 INFO L85 PathProgramCache]: Analyzing trace with hash -435278385, now seen corresponding path program 2 times [2021-11-09 09:47:23,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:47:23,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983615515] [2021-11-09 09:47:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:23,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:47:23,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:47:23,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771755838] [2021-11-09 09:47:23,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:47:23,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:47:23,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:47:23,316 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:47:23,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 09:47:23,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:47:23,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:47:23,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 09:47:23,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:47:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:47:23,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:47:23,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983615515] [2021-11-09 09:47:23,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:47:23,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771755838] [2021-11-09 09:47:23,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771755838] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:47:23,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:47:23,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 09:47:23,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044583571] [2021-11-09 09:47:23,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:47:23,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:47:23,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:47:23,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:47:23,560 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:47:23,660 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-11-09 09:47:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:47:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-09 09:47:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:47:23,661 INFO L225 Difference]: With dead ends: 68 [2021-11-09 09:47:23,661 INFO L226 Difference]: Without dead ends: 64 [2021-11-09 09:47:23,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:47:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-09 09:47:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2021-11-09 09:47:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:23,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-11-09 09:47:23,668 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2021-11-09 09:47:23,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:47:23,668 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-11-09 09:47:23,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-11-09 09:47:23,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-09 09:47:23,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:47:23,670 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-09 09:47:23,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-09 09:47:23,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:47:23,898 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:47:23,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:47:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1690544526, now seen corresponding path program 2 times [2021-11-09 09:47:23,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:47:23,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638115504] [2021-11-09 09:47:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:23,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:47:23,909 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:47:23,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303330787] [2021-11-09 09:47:23,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:47:23,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:47:23,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:47:23,918 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:47:23,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 09:47:24,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:47:24,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:47:24,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-09 09:47:24,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:47:24,246 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:47:24,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:47:24,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638115504] [2021-11-09 09:47:24,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:47:24,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303330787] [2021-11-09 09:47:24,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303330787] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:47:24,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:47:24,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 09:47:24,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433399660] [2021-11-09 09:47:24,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:47:24,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:47:24,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:47:24,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:47:24,249 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:24,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:47:24,367 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-11-09 09:47:24,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:47:24,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-09 09:47:24,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:47:24,368 INFO L225 Difference]: With dead ends: 64 [2021-11-09 09:47:24,368 INFO L226 Difference]: Without dead ends: 60 [2021-11-09 09:47:24,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:47:24,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-09 09:47:24,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-11-09 09:47:24,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2021-11-09 09:47:24,375 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 23 [2021-11-09 09:47:24,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:47:24,375 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2021-11-09 09:47:24,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:24,376 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2021-11-09 09:47:24,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-09 09:47:24,377 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:47:24,377 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-09 09:47:24,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:47:24,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:47:24,602 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:47:24,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:47:24,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 2 times [2021-11-09 09:47:24,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:47:24,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060645840] [2021-11-09 09:47:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:24,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:47:24,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:47:24,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438745933] [2021-11-09 09:47:24,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:47:24,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:47:24,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:47:24,627 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:47:24,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 09:47:24,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 09:47:24,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:47:24,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:47:24,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:47:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-09 09:47:25,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:47:25,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060645840] [2021-11-09 09:47:25,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:47:25,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438745933] [2021-11-09 09:47:25,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438745933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:47:25,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:47:25,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:47:25,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141195456] [2021-11-09 09:47:25,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:47:25,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:47:25,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:47:25,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:47:25,010 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:34,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:47:34,467 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2021-11-09 09:47:34,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:47:34,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-09 09:47:34,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:47:34,468 INFO L225 Difference]: With dead ends: 54 [2021-11-09 09:47:34,468 INFO L226 Difference]: Without dead ends: 0 [2021-11-09 09:47:34,469 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:47:34,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-09 09:47:34,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-09 09:47:34,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-09 09:47:34,470 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-11-09 09:47:34,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:47:34,470 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 09:47:34,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:47:34,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-09 09:47:34,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-09 09:47:34,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:47:34,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:47:34,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:47:34,474 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:47:34,474 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:47:34,474 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:47:34,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:47:34,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 09:47:34,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-09 09:47:34,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:47:34,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:47:34,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:47:34,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:47:34,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:47:34,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:47:34,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:47:34,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:47:34,991 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-09 09:47:34,991 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-09 09:47:34,992 INFO L860 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true [2021-11-09 09:47:34,992 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-09 09:47:34,992 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-09 09:47:34,992 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-09 09:47:34,992 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-09 09:47:34,992 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-09 09:47:34,992 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-09 09:47:34,992 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (let ((.cse0 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse0) (* .cse0 .cse0) 1)))) [2021-11-09 09:47:34,992 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-11-09 09:47:34,993 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-11-09 09:47:34,993 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (let ((.cse0 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse0) (* .cse0 .cse0) 1)))) [2021-11-09 09:47:34,993 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-11-09 09:47:34,993 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 36 37) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (let ((.cse0 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse0) (* .cse0 .cse0) 1)))) [2021-11-09 09:47:34,993 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-11-09 09:47:34,993 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~s~0 4)) (and (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 1) .cse0) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (let ((.cse1 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse1) (* .cse1 .cse1) 1)))))) [2021-11-09 09:47:34,993 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-09 09:47:34,993 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-11-09 09:47:34,994 INFO L853 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (let ((.cse0 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse0) (* .cse0 .cse0) 1)))) (and (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (= ULTIMATE.start_main_~t~0 3) .cse1) (and (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 1) .cse1))) [2021-11-09 09:47:34,994 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-11-09 09:47:34,994 INFO L860 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-11-09 09:47:34,994 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-09 09:47:34,994 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-09 09:47:34,994 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-11-09 09:47:34,994 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-11-09 09:47:34,994 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-11-09 09:47:34,994 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-11-09 09:47:34,995 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-11-09 09:47:34,995 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-11-09 09:47:34,995 INFO L853 garLoopResultBuilder]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (.cse1 (= ULTIMATE.start_main_~s~0 (let ((.cse2 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse2) (* .cse2 .cse2) 1))))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1) (and (= ULTIMATE.start_main_~t~0 1) .cse0 .cse1))) [2021-11-09 09:47:34,995 INFO L857 garLoopResultBuilder]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2021-11-09 09:47:34,995 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-09 09:47:35,003 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2021-11-09 09:47:35,005 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:47:35,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:47:35 BoogieIcfgContainer [2021-11-09 09:47:35,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:47:35,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:47:35,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:47:35,049 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:47:35,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:47:19" (3/4) ... [2021-11-09 09:47:35,053 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 09:47:35,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-09 09:47:35,068 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-09 09:47:35,069 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 09:47:35,069 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 09:47:35,126 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 09:47:35,126 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:47:35,128 INFO L168 Benchmark]: Toolchain (without parser) took 16062.01 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 51.4 MB in the beginning and 35.6 MB in the end (delta: 15.8 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:47:35,129 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:47:35,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.09 ms. Allocated memory is still 92.3 MB. Free memory was 51.2 MB in the beginning and 67.4 MB in the end (delta: -16.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:47:35,130 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.44 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 65.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:47:35,131 INFO L168 Benchmark]: Boogie Preprocessor took 23.38 ms. Allocated memory is still 92.3 MB. Free memory was 65.9 MB in the beginning and 64.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:47:35,131 INFO L168 Benchmark]: RCFGBuilder took 314.12 ms. Allocated memory is still 92.3 MB. Free memory was 64.5 MB in the beginning and 54.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:47:35,132 INFO L168 Benchmark]: TraceAbstraction took 15331.58 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 53.7 MB in the beginning and 38.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2021-11-09 09:47:35,132 INFO L168 Benchmark]: Witness Printer took 77.37 ms. Allocated memory is still 111.1 MB. Free memory was 38.8 MB in the beginning and 35.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 09:47:35,134 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 92.3 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.09 ms. Allocated memory is still 92.3 MB. Free memory was 51.2 MB in the beginning and 67.4 MB in the end (delta: -16.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.44 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 65.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.38 ms. Allocated memory is still 92.3 MB. Free memory was 65.9 MB in the beginning and 64.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 314.12 ms. Allocated memory is still 92.3 MB. Free memory was 64.5 MB in the beginning and 54.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15331.58 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 53.7 MB in the beginning and 38.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. * Witness Printer took 77.37 ms. Allocated memory is still 111.1 MB. Free memory was 38.8 MB in the beginning and 35.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 15.2s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 202 SDtfs, 165 SDslu, 371 SDs, 0 SdLazy, 495 SolverSat, 99 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 9.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=9, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 56 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 33 NumberOfFragments, 330 HoareAnnotationTreeSize, 8 FomulaSimplifications, 2191 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 151 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 835 SizeOfPredicates, 32 NumberOfNonLiveVariables, 623 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 19/57 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 == cond && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((1 == cond && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1) || ((t == 1 && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (1 == cond && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((t == 3 && a == 1) && !(0 == cond)) && s == 4) || (((a == 0 && t == 1) && s == 1) && !(0 == cond))) || ((1 == cond && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 == cond && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1) || ((s == t + 1 && t == 3) && !(0 == cond))) || ((t == 1 && s == 1) && !(0 == cond)) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 == cond && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-09 09:47:35,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b6727b-2640-4869-a5f9-23df101ae683/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE