./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 66d5bcd82161f36b0fe448ef964e4bb1f81ca402 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:57:51,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:57:51,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:57:51,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:57:51,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:57:51,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:57:51,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:57:51,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:57:51,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:57:51,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:57:51,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:57:51,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:57:51,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:57:51,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:57:51,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:57:51,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:57:51,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:57:51,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:57:51,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:57:51,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:57:51,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:57:51,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:57:51,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:57:51,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:57:51,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:57:51,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:57:51,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:57:51,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:57:51,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:57:51,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:57:51,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:57:51,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:57:51,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:57:51,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:57:51,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:57:51,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:57:51,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:57:51,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:57:51,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:57:51,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:57:51,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:57:51,734 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:57:51,770 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:57:51,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:57:51,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:57:51,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:57:51,773 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:57:51,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:57:51,774 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:57:51,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:57:51,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:57:51,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:57:51,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:57:51,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:57:51,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:57:51,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:57:51,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:57:51,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:57:51,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:57:51,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:57:51,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:57:51,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:57:51,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:57:51,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:57:51,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:57:51,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:57:51,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:57:51,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:57:51,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:57:51,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:57:51,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:57:51,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d5bcd82161f36b0fe448ef964e4bb1f81ca402 [2020-11-29 21:57:52,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:57:52,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:57:52,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:57:52,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:57:52,112 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:57:52,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c [2020-11-29 21:57:52,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/data/09a0405ef/391fe2e5dc4f4a17b406b974a753c656/FLAG3809fff6c [2020-11-29 21:57:52,641 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:57:52,642 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c [2020-11-29 21:57:52,648 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/data/09a0405ef/391fe2e5dc4f4a17b406b974a753c656/FLAG3809fff6c [2020-11-29 21:57:53,042 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/data/09a0405ef/391fe2e5dc4f4a17b406b974a753c656 [2020-11-29 21:57:53,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:57:53,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:57:53,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:57:53,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:57:53,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:57:53,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:57:53" (1/1) ... [2020-11-29 21:57:53,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff92e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:53, skipping insertion in model container [2020-11-29 21:57:53,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:57:53" (1/1) ... [2020-11-29 21:57:53,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:57:53,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:57:53,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:57:53,296 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:57:53,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:57:53,327 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:57:53,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:53 WrapperNode [2020-11-29 21:57:53,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:57:53,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:57:53,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:57:53,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:57:53,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:53" (1/1) ... [2020-11-29 21:57:53,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:53" (1/1) ... [2020-11-29 21:57:53,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:57:53,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:57:53,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:57:53,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:57:53,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:53" (1/1) ... [2020-11-29 21:57:53,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:53" (1/1) ... [2020-11-29 21:57:53,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:53" (1/1) ... [2020-11-29 21:57:53,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:53" (1/1) ... [2020-11-29 21:57:53,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:53" (1/1) ... [2020-11-29 21:57:53,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:53" (1/1) ... [2020-11-29 21:57:53,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:53" (1/1) ... [2020-11-29 21:57:53,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:57:53,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:57:53,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:57:53,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:57:53,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:57:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:57:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:57:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:57:53,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:57:53,713 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:57:53,713 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-29 21:57:53,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:57:53 BoogieIcfgContainer [2020-11-29 21:57:53,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:57:53,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:57:53,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:57:53,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:57:53,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:57:53" (1/3) ... [2020-11-29 21:57:53,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1f367e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:57:53, skipping insertion in model container [2020-11-29 21:57:53,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:53" (2/3) ... [2020-11-29 21:57:53,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1f367e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:57:53, skipping insertion in model container [2020-11-29 21:57:53,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:57:53" (3/3) ... [2020-11-29 21:57:53,724 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound50.c [2020-11-29 21:57:53,734 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:57:53,738 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 21:57:53,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 21:57:53,772 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:57:53,773 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:57:53,773 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:57:53,773 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:57:53,773 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:57:53,773 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:57:53,774 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:57:53,774 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:57:53,788 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-29 21:57:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 21:57:53,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:53,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 21:57:53,793 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:57:53,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:53,799 INFO L82 PathProgramCache]: Analyzing trace with hash 891015143, now seen corresponding path program 1 times [2020-11-29 21:57:53,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:53,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669341208] [2020-11-29 21:57:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:53,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669341208] [2020-11-29 21:57:53,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:53,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:57:53,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480052164] [2020-11-29 21:57:53,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:57:53,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:53,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:57:53,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:57:53,976 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-11-29 21:57:53,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:53,995 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-11-29 21:57:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:57:53,996 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-29 21:57:53,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:54,003 INFO L225 Difference]: With dead ends: 62 [2020-11-29 21:57:54,003 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 21:57:54,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:57:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 21:57:54,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 21:57:54,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 21:57:54,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-29 21:57:54,041 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-11-29 21:57:54,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:54,041 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-29 21:57:54,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:57:54,041 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-29 21:57:54,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 21:57:54,042 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:54,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 21:57:54,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:57:54,043 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:57:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:54,044 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 21:57:54,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:54,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970671111] [2020-11-29 21:57:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:54,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970671111] [2020-11-29 21:57:54,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:54,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:57:54,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199559495] [2020-11-29 21:57:54,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:57:54,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:54,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:57:54,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:57:54,176 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-11-29 21:57:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:54,373 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-11-29 21:57:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:57:54,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-29 21:57:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:54,375 INFO L225 Difference]: With dead ends: 55 [2020-11-29 21:57:54,375 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 21:57:54,376 INFO L677 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 [2020-11-29 21:57:54,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 21:57:54,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-11-29 21:57:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 21:57:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-11-29 21:57:54,387 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-11-29 21:57:54,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:54,387 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-11-29 21:57:54,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:57:54,387 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-11-29 21:57:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 21:57:54,388 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:54,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:54,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:57:54,389 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:57:54,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:54,390 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-11-29 21:57:54,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:54,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326132158] [2020-11-29 21:57:54,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:54,410 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:54,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430606869] [2020-11-29 21:57:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:54,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:57:54,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:54,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326132158] [2020-11-29 21:57:54,563 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:54,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430606869] [2020-11-29 21:57:54,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:54,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:57:54,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843276361] [2020-11-29 21:57:54,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:57:54,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:54,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:57:54,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:57:54,566 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 4 states. [2020-11-29 21:57:54,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:54,741 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-11-29 21:57:54,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:57:54,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 21:57:54,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:54,743 INFO L225 Difference]: With dead ends: 50 [2020-11-29 21:57:54,743 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 21:57:54,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:57:54,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 21:57:54,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-29 21:57:54,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 21:57:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-11-29 21:57:54,753 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-11-29 21:57:54,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:54,753 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-11-29 21:57:54,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:57:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-11-29 21:57:54,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 21:57:54,754 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:54,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:54,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 21:57:54,973 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:57:54,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:54,974 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-11-29 21:57:54,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:54,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561553940] [2020-11-29 21:57:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:55,001 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:55,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329837029] [2020-11-29 21:57:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:55,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:57:55,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:55,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561553940] [2020-11-29 21:57:55,122 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:55,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329837029] [2020-11-29 21:57:55,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:55,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:57:55,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657470010] [2020-11-29 21:57:55,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:57:55,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:55,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:57:55,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:57:55,124 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-11-29 21:57:55,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:55,230 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-11-29 21:57:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:57:55,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 21:57:55,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:55,232 INFO L225 Difference]: With dead ends: 50 [2020-11-29 21:57:55,232 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 21:57:55,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:57:55,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 21:57:55,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-11-29 21:57:55,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 21:57:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-11-29 21:57:55,245 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 10 [2020-11-29 21:57:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:55,246 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-11-29 21:57:55,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:57:55,247 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-11-29 21:57:55,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:57:55,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:55,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:55,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:55,474 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:57:55,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:55,474 INFO L82 PathProgramCache]: Analyzing trace with hash 2079810332, now seen corresponding path program 1 times [2020-11-29 21:57:55,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:55,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461555632] [2020-11-29 21:57:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:55,486 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:55,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454353528] [2020-11-29 21:57:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:55,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 21:57:55,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:55,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461555632] [2020-11-29 21:57:55,573 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:55,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454353528] [2020-11-29 21:57:55,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:57:55,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:57:55,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861102302] [2020-11-29 21:57:55,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:57:55,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:55,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:57:55,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:57:55,575 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 5 states. [2020-11-29 21:57:55,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:55,733 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-11-29 21:57:55,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:57:55,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 21:57:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:55,739 INFO L225 Difference]: With dead ends: 62 [2020-11-29 21:57:55,740 INFO L226 Difference]: Without dead ends: 58 [2020-11-29 21:57:55,740 INFO L677 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 [2020-11-29 21:57:55,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-29 21:57:55,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-11-29 21:57:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-29 21:57:55,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-11-29 21:57:55,752 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-11-29 21:57:55,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:55,752 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-11-29 21:57:55,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:57:55,752 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-11-29 21:57:55,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 21:57:55,753 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:55,753 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:55,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:55,964 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:57:55,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:55,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1538122751, now seen corresponding path program 1 times [2020-11-29 21:57:55,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:55,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694477532] [2020-11-29 21:57:55,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:55,975 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:55,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367573285] [2020-11-29 21:57:55,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:56,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 21:57:56,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:56,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694477532] [2020-11-29 21:57:56,090 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:56,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367573285] [2020-11-29 21:57:56,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:57:56,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:57:56,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282628594] [2020-11-29 21:57:56,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:57:56,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:56,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:57:56,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:57:56,093 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2020-11-29 21:57:56,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:56,222 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-11-29 21:57:56,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:57:56,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 21:57:56,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:56,226 INFO L225 Difference]: With dead ends: 59 [2020-11-29 21:57:56,226 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 21:57:56,226 INFO L677 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 [2020-11-29 21:57:56,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 21:57:56,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-11-29 21:57:56,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 21:57:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-11-29 21:57:56,241 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 16 [2020-11-29 21:57:56,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:56,241 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-11-29 21:57:56,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:57:56,242 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-11-29 21:57:56,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:57:56,243 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:56,243 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:56,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:56,451 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:57:56,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:56,451 INFO L82 PathProgramCache]: Analyzing trace with hash 667400610, now seen corresponding path program 1 times [2020-11-29 21:57:56,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:56,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679978866] [2020-11-29 21:57:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:56,478 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:56,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519955332] [2020-11-29 21:57:56,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:56,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 21:57:56,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:56,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679978866] [2020-11-29 21:57:56,591 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:56,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519955332] [2020-11-29 21:57:56,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:57:56,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:57:56,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943946384] [2020-11-29 21:57:56,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:57:56,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:56,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:57:56,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:57:56,593 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-11-29 21:57:56,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:56,713 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-11-29 21:57:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:57:56,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 21:57:56,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:56,714 INFO L225 Difference]: With dead ends: 57 [2020-11-29 21:57:56,714 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 21:57:56,714 INFO L677 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 [2020-11-29 21:57:56,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 21:57:56,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-11-29 21:57:56,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 21:57:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-11-29 21:57:56,721 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 18 [2020-11-29 21:57:56,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:56,722 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-11-29 21:57:56,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:57:56,722 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-11-29 21:57:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 21:57:56,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:56,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-29 21:57:56,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 21:57:56,944 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:57:56,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:56,945 INFO L82 PathProgramCache]: Analyzing trace with hash 789154926, now seen corresponding path program 2 times [2020-11-29 21:57:56,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:56,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032564009] [2020-11-29 21:57:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:56,955 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:56,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287674099] [2020-11-29 21:57:56,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:57,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:57:57,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:57:57,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 21:57:57,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:57,065 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:57,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032564009] [2020-11-29 21:57:57,065 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:57,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287674099] [2020-11-29 21:57:57,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:57:57,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 21:57:57,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219999225] [2020-11-29 21:57:57,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:57:57,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:57,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:57:57,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:57:57,067 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-11-29 21:57:57,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:57,216 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-11-29 21:57:57,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:57:57,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-29 21:57:57,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:57,218 INFO L225 Difference]: With dead ends: 70 [2020-11-29 21:57:57,218 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 21:57:57,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:57:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 21:57:57,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-11-29 21:57:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 21:57:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-11-29 21:57:57,235 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 22 [2020-11-29 21:57:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:57,235 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-11-29 21:57:57,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:57:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-11-29 21:57:57,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 21:57:57,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:57,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-29 21:57:57,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:57,464 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:57:57,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:57,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1831141167, now seen corresponding path program 2 times [2020-11-29 21:57:57,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:57,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868142652] [2020-11-29 21:57:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:57,474 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:57,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416524934] [2020-11-29 21:57:57,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:57,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:57:57,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:57:57,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 21:57:57,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:57,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868142652] [2020-11-29 21:57:57,619 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:57,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416524934] [2020-11-29 21:57:57,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:57:57,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 21:57:57,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390006362] [2020-11-29 21:57:57,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:57:57,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:57,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:57:57,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:57:57,621 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 6 states. [2020-11-29 21:57:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:57,812 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-11-29 21:57:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:57:57,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-29 21:57:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:57,814 INFO L225 Difference]: With dead ends: 67 [2020-11-29 21:57:57,814 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 21:57:57,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:57:57,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 21:57:57,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-11-29 21:57:57,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 21:57:57,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-11-29 21:57:57,822 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 24 [2020-11-29 21:57:57,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:57,822 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-11-29 21:57:57,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:57:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-11-29 21:57:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 21:57:57,824 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:57,824 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-11-29 21:57:58,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:58,040 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:57:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:58,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1210116596, now seen corresponding path program 2 times [2020-11-29 21:57:58,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:58,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037577467] [2020-11-29 21:57:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:58,049 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:58,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156173616] [2020-11-29 21:57:58,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:58,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 21:57:58,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:57:58,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 21:57:58,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:58,142 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:57:58,143 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:57:58,209 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:57:58,209 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:00,295 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 21:58:06,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037577467] [2020-11-29 21:58:06,506 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:06,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156173616] [2020-11-29 21:58:06,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:58:06,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 21:58:06,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262021926] [2020-11-29 21:58:06,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:58:06,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:06,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:58:06,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:58:06,508 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2020-11-29 21:58:06,708 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2020-11-29 21:58:15,169 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2020-11-29 21:58:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:23,545 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-11-29 21:58:23,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:58:23,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-11-29 21:58:23,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:23,550 INFO L225 Difference]: With dead ends: 56 [2020-11-29 21:58:23,550 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 21:58:23,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:58:23,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 21:58:23,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-29 21:58:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 21:58:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-11-29 21:58:23,570 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 26 [2020-11-29 21:58:23,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:23,571 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-11-29 21:58:23,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:58:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-11-29 21:58:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 21:58:23,572 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:23,573 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:58:23,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 21:58:23,773 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:58:23,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:23,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1873493846, now seen corresponding path program 1 times [2020-11-29 21:58:23,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:23,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366229987] [2020-11-29 21:58:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:23,785 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:58:23,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751386772] [2020-11-29 21:58:23,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:58:23,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:58:23,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:58:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:58:23,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366229987] [2020-11-29 21:58:23,885 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:23,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751386772] [2020-11-29 21:58:23,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:58:23,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:58:23,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041253293] [2020-11-29 21:58:23,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:58:23,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:23,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:58:23,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:58:23,888 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2020-11-29 21:58:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:23,969 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-11-29 21:58:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:58:23,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-29 21:58:23,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:23,971 INFO L225 Difference]: With dead ends: 62 [2020-11-29 21:58:23,971 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 21:58:23,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:58:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 21:58:23,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-29 21:58:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 21:58:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-11-29 21:58:23,980 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 27 [2020-11-29 21:58:23,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:23,980 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-11-29 21:58:23,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:58:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-11-29 21:58:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 21:58:23,982 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:23,982 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-11-29 21:58:24,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:24,196 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:58:24,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:24,196 INFO L82 PathProgramCache]: Analyzing trace with hash 600720320, now seen corresponding path program 3 times [2020-11-29 21:58:24,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:24,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399305533] [2020-11-29 21:58:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:24,205 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:58:24,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309013691] [2020-11-29 21:58:24,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:24,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:58:24,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:58:24,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 21:58:24,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:58:24,324 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:58:24,324 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 21:58:24,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399305533] [2020-11-29 21:58:24,402 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:24,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309013691] [2020-11-29 21:58:24,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:58:24,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:58:24,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437074772] [2020-11-29 21:58:24,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:58:24,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:24,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:58:24,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:58:24,404 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 5 states. [2020-11-29 21:58:24,532 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2020-11-29 21:58:24,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:24,673 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-11-29 21:58:24,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:58:24,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-29 21:58:24,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:24,676 INFO L225 Difference]: With dead ends: 54 [2020-11-29 21:58:24,676 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 21:58:24,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:58:24,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 21:58:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-29 21:58:24,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-29 21:58:24,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-11-29 21:58:24,693 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 30 [2020-11-29 21:58:24,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:24,693 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-11-29 21:58:24,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:58:24,693 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-11-29 21:58:24,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 21:58:24,694 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:24,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2020-11-29 21:58:24,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:24,895 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:58:24,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:24,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1766796195, now seen corresponding path program 3 times [2020-11-29 21:58:24,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:24,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207796772] [2020-11-29 21:58:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:24,903 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:58:24,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969304120] [2020-11-29 21:58:24,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:24,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:58:24,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:58:24,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 21:58:24,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:58:25,003 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:58:25,003 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:25,207 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 21:58:25,209 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:58:25,209 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:35,161 WARN L193 SmtUtils]: Spent 4.24 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-29 21:58:35,163 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:58:35,164 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:45,241 WARN L193 SmtUtils]: Spent 2.88 s on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 21:58:45,259 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-29 21:58:45,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207796772] [2020-11-29 21:58:45,393 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:45,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969304120] [2020-11-29 21:58:45,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:58:45,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 21:58:45,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934862668] [2020-11-29 21:58:45,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 21:58:45,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:45,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 21:58:45,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=66, Unknown=3, NotChecked=0, Total=90 [2020-11-29 21:58:45,408 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 10 states. [2020-11-29 21:59:06,563 WARN L193 SmtUtils]: Spent 20.99 s on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-11-29 21:59:18,065 WARN L193 SmtUtils]: Spent 10.44 s on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-11-29 21:59:49,083 WARN L193 SmtUtils]: Spent 13.33 s on a formula simplification that was a NOOP. DAG size: 36 [2020-11-29 22:00:07,111 WARN L193 SmtUtils]: Spent 7.30 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-29 22:00:31,334 WARN L193 SmtUtils]: Spent 9.69 s on a formula simplification. DAG size of input: 35 DAG size of output: 22 [2020-11-29 22:00:43,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:43,780 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-11-29 22:00:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:00:43,781 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-11-29 22:00:43,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:00:43,782 INFO L225 Difference]: With dead ends: 56 [2020-11-29 22:00:43,782 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:00:43,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 100.6s TimeCoverageRelationStatistics Valid=66, Invalid=163, Unknown=11, NotChecked=0, Total=240 [2020-11-29 22:00:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:00:43,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:00:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:00:43,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:00:43,784 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-11-29 22:00:43,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:00:43,784 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:00:43,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 22:00:43,784 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:00:43,784 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:00:43,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 22:00:43,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 22:00:49,081 WARN L193 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-11-29 22:00:59,819 WARN L193 SmtUtils]: Spent 10.74 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-11-29 22:01:12,614 WARN L193 SmtUtils]: Spent 12.79 s on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-11-29 22:01:34,149 WARN L193 SmtUtils]: Spent 21.53 s on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-11-29 22:01:42,058 WARN L193 SmtUtils]: Spent 7.91 s on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-11-29 22:02:04,125 WARN L193 SmtUtils]: Spent 22.07 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-11-29 22:02:04,129 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:02:04,129 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:02:04,129 INFO L277 CegarLoopResult]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-11-29 22:02:04,129 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 22:02:04,129 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:02:04,129 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 22:02:04,130 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 22:02:04,130 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:02:04,130 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:02:04,130 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1)))) [2020-11-29 22:02:04,130 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:02:04,130 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse2 (* ULTIMATE.start_main_~a~0 2))) (and (= ULTIMATE.start_main_~s~0 (let ((.cse0 (div (+ ULTIMATE.start_main_~t~0 (- 1)) 2))) (+ (* .cse0 2) (* .cse0 .cse0) 1))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse1 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse2 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse1 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse1 .cse2 1)))) [2020-11-29 22:02:04,130 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:02:04,131 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1)))) [2020-11-29 22:02:04,131 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:02:04,131 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)) (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse2 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse1 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse2 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ .cse1 .cse2 1)))))) [2020-11-29 22:02:04,131 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:02:04,131 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~t~0 1)) (and .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse2 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse1 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse2 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ .cse1 .cse2 1)))))) [2020-11-29 22:02:04,131 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:02:04,131 INFO L277 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-11-29 22:02:04,131 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 22:02:04,132 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:02:04,132 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:02:04,132 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:02:04,132 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:02:04,132 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:02:04,133 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:02:04,133 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:02:04,133 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-11-29 22:02:04,133 INFO L270 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 2)) (.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (or (and (<= ~counter~0 0) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1))) (and (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ .cse0 ULTIMATE.start_main_~t~0))))) [2020-11-29 22:02:04,133 INFO L274 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-11-29 22:02:04,134 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:02:04,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:02:04 BoogieIcfgContainer [2020-11-29 22:02:04,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:02:04,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:02:04,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:02:04,165 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:02:04,166 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:57:53" (3/4) ... [2020-11-29 22:02:04,169 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:02:04,189 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-29 22:02:04,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 22:02:04,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:02:04,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:02:04,232 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ae2acd06-e3d8-4162-99e7-4dfb4b7be71d/bin/uautomizer/witness.graphml [2020-11-29 22:02:04,232 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:02:04,233 INFO L168 Benchmark]: Toolchain (without parser) took 251187.38 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 55.9 MB in the beginning and 38.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:02:04,234 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 46.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:02:04,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.15 ms. Allocated memory is still 88.1 MB. Free memory was 55.7 MB in the beginning and 64.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:02:04,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.69 ms. Allocated memory is still 88.1 MB. Free memory was 64.7 MB in the beginning and 63.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:02:04,235 INFO L168 Benchmark]: Boogie Preprocessor took 23.51 ms. Allocated memory is still 88.1 MB. Free memory was 63.0 MB in the beginning and 61.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:02:04,236 INFO L168 Benchmark]: RCFGBuilder took 326.31 ms. Allocated memory is still 88.1 MB. Free memory was 61.9 MB in the beginning and 47.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 22:02:04,237 INFO L168 Benchmark]: TraceAbstraction took 250446.84 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 47.6 MB in the beginning and 41.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:02:04,237 INFO L168 Benchmark]: Witness Printer took 68.50 ms. Allocated memory is still 107.0 MB. Free memory was 41.8 MB in the beginning and 38.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:02:04,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 46.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.15 ms. Allocated memory is still 88.1 MB. Free memory was 55.7 MB in the beginning and 64.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.69 ms. Allocated memory is still 88.1 MB. Free memory was 64.7 MB in the beginning and 63.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.51 ms. Allocated memory is still 88.1 MB. Free memory was 63.0 MB in the beginning and 61.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 326.31 ms. Allocated memory is still 88.1 MB. Free memory was 61.9 MB in the beginning and 47.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 250446.84 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 47.6 MB in the beginning and 41.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. * Witness Printer took 68.50 ms. Allocated memory is still 107.0 MB. Free memory was 41.8 MB in the beginning and 38.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((!(0 == cond) && a == 1) && t == 3) && s == t + 1) || (((!(0 == cond) && s == 1) && a == 0) && t == 1)) || (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && s == a * a + a * 2 + 1) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((counter <= 0 && a == 0) && t == 1) && s == a * a + a * 2 + 1) || (((t * t + 1 == a * a * 4 + t * 2 && a * 2 + 1 == t) && 1 <= cond) && s == a * a + t) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((!(0 == cond) && s == 1) && t == 1) || ((!(0 == cond) && t == 3) && s == t + 1)) || (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && s == a * a + a * 2 + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((s == (t + -1) / 2 * 2 + (t + -1) / 2 * ((t + -1) / 2) + 1 && 1 == cond) && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 170.2s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 137.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 80.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 272 SDtfs, 268 SDslu, 539 SDs, 0 SdLazy, 592 SolverSat, 144 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 54.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 102.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=9, 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, 13 MinimizatonAttempts, 63 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 35 NumberOfFragments, 392 HoareAnnotationTreeSize, 8 FomulaSimplifications, 4009 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 180 FormulaSimplificationTreeSizeReductionInter, 80.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 29.5s InterpolantComputationTime, 239 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 29583 SizeOfPredicates, 58 NumberOfNonLiveVariables, 962 ConjunctsInSsa, 143 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 92/153 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...