./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/egcd-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/egcd-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg --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 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:42:01,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:42:01,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:42:01,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:42:01,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:42:01,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:42:01,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:42:01,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:42:01,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:42:01,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:42:01,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:42:01,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:42:01,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:42:01,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:42:01,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:42:01,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:42:01,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:42:01,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:42:01,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:42:01,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:42:01,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:42:01,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:42:01,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:42:01,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:42:01,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:42:01,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:42:01,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:42:01,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:42:01,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:42:01,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:42:01,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:42:01,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:42:01,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:42:01,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:42:01,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:42:01,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:42:01,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:42:01,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:42:01,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:42:01,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:42:01,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:42:01,659 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:42:01,713 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:42:01,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:42:01,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:42:01,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:42:01,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:42:01,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:42:01,717 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:42:01,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:42:01,717 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:42:01,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:42:01,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:42:01,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:42:01,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:42:01,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:42:01,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:42:01,719 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:42:01,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:42:01,720 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:42:01,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:42:01,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:42:01,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:42:01,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:42:01,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:42:01,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:42:01,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:42:01,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:42:01,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:42:01,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:42:01,723 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:42:01,723 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:42:01,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:42:01,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:42:01,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 [2021-10-28 09:42:02,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:42:02,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:42:02,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:42:02,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:42:02,073 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:42:02,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench/egcd-ll.c [2021-10-28 09:42:02,176 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/data/0b1b57b93/b1abd0162a3d4ad19473f852949053b1/FLAG7a7e38dd9 [2021-10-28 09:42:02,757 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:42:02,759 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/sv-benchmarks/c/nla-digbench/egcd-ll.c [2021-10-28 09:42:02,771 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/data/0b1b57b93/b1abd0162a3d4ad19473f852949053b1/FLAG7a7e38dd9 [2021-10-28 09:42:03,122 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/data/0b1b57b93/b1abd0162a3d4ad19473f852949053b1 [2021-10-28 09:42:03,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:42:03,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:42:03,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:42:03,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:42:03,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:42:03,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:42:03" (1/1) ... [2021-10-28 09:42:03,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474860b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:03, skipping insertion in model container [2021-10-28 09:42:03,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:42:03" (1/1) ... [2021-10-28 09:42:03,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:42:03,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:42:03,358 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/sv-benchmarks/c/nla-digbench/egcd-ll.c[489,502] [2021-10-28 09:42:03,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:42:03,390 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:42:03,408 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/sv-benchmarks/c/nla-digbench/egcd-ll.c[489,502] [2021-10-28 09:42:03,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:42:03,433 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:42:03,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:03 WrapperNode [2021-10-28 09:42:03,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:42:03,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:42:03,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:42:03,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:42:03,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:03" (1/1) ... [2021-10-28 09:42:03,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:03" (1/1) ... [2021-10-28 09:42:03,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:42:03,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:42:03,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:42:03,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:42:03,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:03" (1/1) ... [2021-10-28 09:42:03,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:03" (1/1) ... [2021-10-28 09:42:03,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:03" (1/1) ... [2021-10-28 09:42:03,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:03" (1/1) ... [2021-10-28 09:42:03,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:03" (1/1) ... [2021-10-28 09:42:03,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:03" (1/1) ... [2021-10-28 09:42:03,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:03" (1/1) ... [2021-10-28 09:42:03,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:42:03,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:42:03,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:42:03,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:42:03,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:03" (1/1) ... [2021-10-28 09:42:03,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:42:03,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:03,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:03,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:42:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:42:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:42:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:42:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:42:03,855 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:42:03,856 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-28 09:42:03,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:42:03 BoogieIcfgContainer [2021-10-28 09:42:03,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:42:03,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:42:03,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:42:03,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:42:03,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:42:03" (1/3) ... [2021-10-28 09:42:03,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bcb446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:42:03, skipping insertion in model container [2021-10-28 09:42:03,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:03" (2/3) ... [2021-10-28 09:42:03,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bcb446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:42:03, skipping insertion in model container [2021-10-28 09:42:03,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:42:03" (3/3) ... [2021-10-28 09:42:03,882 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2021-10-28 09:42:03,887 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:42:03,888 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-28 09:42:03,989 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:42:03,996 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:42:03,996 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 09:42:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 32 states have (on average 1.625) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:04,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:42:04,027 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:04,028 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:04,029 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:04,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:04,040 INFO L85 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-10-28 09:42:04,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:04,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885181967] [2021-10-28 09:42:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:04,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:04,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:04,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885181967] [2021-10-28 09:42:04,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885181967] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:04,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:04,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:42:04,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553139190] [2021-10-28 09:42:04,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:42:04,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:04,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:42:04,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:42:04,286 INFO L87 Difference]: Start difference. First operand has 40 states, 32 states have (on average 1.625) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:04,310 INFO L93 Difference]: Finished difference Result 77 states and 100 transitions. [2021-10-28 09:42:04,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:42:04,312 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 09:42:04,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:04,320 INFO L225 Difference]: With dead ends: 77 [2021-10-28 09:42:04,321 INFO L226 Difference]: Without dead ends: 36 [2021-10-28 09:42:04,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:42:04,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-28 09:42:04,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-28 09:42:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-10-28 09:42:04,369 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 9 [2021-10-28 09:42:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:04,369 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-10-28 09:42:04,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:04,370 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-10-28 09:42:04,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:42:04,371 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:04,372 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:04,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:42:04,372 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:04,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-10-28 09:42:04,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:04,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378206948] [2021-10-28 09:42:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:04,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:04,412 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:04,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813596366] [2021-10-28 09:42:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:04,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:04,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:04,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:04,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:42:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:04,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:42:04,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:04,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:04,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378206948] [2021-10-28 09:42:04,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:04,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813596366] [2021-10-28 09:42:04,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813596366] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:04,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:04,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:42:04,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967481956] [2021-10-28 09:42:04,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:42:04,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:04,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:42:04,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:42:04,605 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:04,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:04,679 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-10-28 09:42:04,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:42:04,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 09:42:04,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:04,681 INFO L225 Difference]: With dead ends: 66 [2021-10-28 09:42:04,682 INFO L226 Difference]: Without dead ends: 62 [2021-10-28 09:42:04,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:42:04,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-28 09:42:04,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2021-10-28 09:42:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-10-28 09:42:04,691 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 9 [2021-10-28 09:42:04,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:04,691 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-10-28 09:42:04,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-10-28 09:42:04,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:42:04,693 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:04,693 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:04,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:04,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-28 09:42:04,919 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:04,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:04,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1503476777, now seen corresponding path program 1 times [2021-10-28 09:42:04,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:04,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132367773] [2021-10-28 09:42:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:04,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:04,933 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:04,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590484420] [2021-10-28 09:42:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:04,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:04,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:04,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:04,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:42:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:05,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:42:05,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:05,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:05,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132367773] [2021-10-28 09:42:05,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:05,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590484420] [2021-10-28 09:42:05,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590484420] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:05,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:05,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:42:05,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411376076] [2021-10-28 09:42:05,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:42:05,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:05,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:42:05,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:42:05,211 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:05,401 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2021-10-28 09:42:05,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:42:05,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 09:42:05,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:05,403 INFO L225 Difference]: With dead ends: 62 [2021-10-28 09:42:05,403 INFO L226 Difference]: Without dead ends: 60 [2021-10-28 09:42:05,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:42:05,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-28 09:42:05,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2021-10-28 09:42:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.302325581395349) internal successors, (56), 49 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2021-10-28 09:42:05,428 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 11 [2021-10-28 09:42:05,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:05,428 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2021-10-28 09:42:05,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:05,429 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2021-10-28 09:42:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:42:05,429 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:05,429 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:05,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:05,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:05,630 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:05,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:05,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1732014918, now seen corresponding path program 1 times [2021-10-28 09:42:05,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:05,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21909599] [2021-10-28 09:42:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:05,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:05,646 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:05,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488061893] [2021-10-28 09:42:05,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:05,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:05,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:05,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:05,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:42:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:05,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:42:05,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:06,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:06,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:06,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21909599] [2021-10-28 09:42:06,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:06,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488061893] [2021-10-28 09:42:06,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488061893] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:06,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:06,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:42:06,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408560198] [2021-10-28 09:42:06,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:42:06,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:06,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:42:06,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:42:06,164 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:06,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:06,441 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2021-10-28 09:42:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:42:06,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-28 09:42:06,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:06,449 INFO L225 Difference]: With dead ends: 96 [2021-10-28 09:42:06,449 INFO L226 Difference]: Without dead ends: 88 [2021-10-28 09:42:06,452 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:42:06,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-28 09:42:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2021-10-28 09:42:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 69 states have (on average 1.318840579710145) internal successors, (91), 75 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2021-10-28 09:42:06,476 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 13 [2021-10-28 09:42:06,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:06,477 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2021-10-28 09:42:06,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:06,478 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2021-10-28 09:42:06,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:42:06,480 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:06,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:06,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:06,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:06,695 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:06,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:06,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1285599533, now seen corresponding path program 1 times [2021-10-28 09:42:06,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:06,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830944397] [2021-10-28 09:42:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:06,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:06,722 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:06,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101317052] [2021-10-28 09:42:06,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:06,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:06,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:06,724 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:06,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:42:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:06,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:42:06,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:06,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:06,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830944397] [2021-10-28 09:42:06,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:06,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101317052] [2021-10-28 09:42:06,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101317052] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:06,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:06,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:42:06,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990397526] [2021-10-28 09:42:06,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:42:06,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:06,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:42:06,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:42:06,881 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:06,920 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2021-10-28 09:42:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:42:06,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-28 09:42:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:06,922 INFO L225 Difference]: With dead ends: 76 [2021-10-28 09:42:06,923 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 09:42:06,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:42:06,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 09:42:06,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-28 09:42:06,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 73 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:06,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2021-10-28 09:42:06,933 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 16 [2021-10-28 09:42:06,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:06,934 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2021-10-28 09:42:06,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:06,934 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2021-10-28 09:42:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:42:06,935 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:06,935 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:06,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:07,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:07,159 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:07,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1200468825, now seen corresponding path program 1 times [2021-10-28 09:42:07,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:07,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172664860] [2021-10-28 09:42:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:07,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:07,178 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:07,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688533020] [2021-10-28 09:42:07,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:07,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:07,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:07,184 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:07,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:42:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:07,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:42:07,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:42:07,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:07,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172664860] [2021-10-28 09:42:07,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:07,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688533020] [2021-10-28 09:42:07,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688533020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:07,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:07,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-28 09:42:07,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766381900] [2021-10-28 09:42:07,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:42:07,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:07,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:42:07,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:42:07,476 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:07,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:07,544 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-10-28 09:42:07,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:42:07,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-28 09:42:07,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:07,546 INFO L225 Difference]: With dead ends: 82 [2021-10-28 09:42:07,546 INFO L226 Difference]: Without dead ends: 76 [2021-10-28 09:42:07,547 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:42:07,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-28 09:42:07,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2021-10-28 09:42:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 67 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2021-10-28 09:42:07,564 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 17 [2021-10-28 09:42:07,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:07,564 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2021-10-28 09:42:07,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:07,565 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2021-10-28 09:42:07,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:42:07,566 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:07,566 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:07,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:07,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 09:42:07,791 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:07,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:07,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1489272560, now seen corresponding path program 1 times [2021-10-28 09:42:07,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:07,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491463767] [2021-10-28 09:42:07,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:07,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:07,812 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:07,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695891900] [2021-10-28 09:42:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:07,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:07,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:07,819 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:07,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:42:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:07,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:42:07,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:08,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:08,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491463767] [2021-10-28 09:42:08,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:08,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695891900] [2021-10-28 09:42:08,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695891900] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:08,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:08,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:42:08,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957699705] [2021-10-28 09:42:08,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:42:08,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:08,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:42:08,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:42:08,078 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:08,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:08,207 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2021-10-28 09:42:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:42:08,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 09:42:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:08,209 INFO L225 Difference]: With dead ends: 76 [2021-10-28 09:42:08,209 INFO L226 Difference]: Without dead ends: 68 [2021-10-28 09:42:08,210 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:42:08,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-28 09:42:08,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-10-28 09:42:08,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 65 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:08,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2021-10-28 09:42:08,219 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 18 [2021-10-28 09:42:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:08,219 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2021-10-28 09:42:08,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:08,220 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2021-10-28 09:42:08,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:42:08,220 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:08,221 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:08,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:08,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:08,443 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:08,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:08,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1695505828, now seen corresponding path program 1 times [2021-10-28 09:42:08,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:08,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924374319] [2021-10-28 09:42:08,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:08,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:08,454 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:08,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398824062] [2021-10-28 09:42:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:08,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:08,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:08,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:08,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:42:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:08,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:42:08,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:08,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:08,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:08,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924374319] [2021-10-28 09:42:08,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:08,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398824062] [2021-10-28 09:42:08,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398824062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:08,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:08,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:42:08,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724306063] [2021-10-28 09:42:08,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:42:08,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:08,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:42:08,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:42:08,929 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:09,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:09,200 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-10-28 09:42:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:42:09,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-28 09:42:09,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:09,206 INFO L225 Difference]: With dead ends: 101 [2021-10-28 09:42:09,206 INFO L226 Difference]: Without dead ends: 99 [2021-10-28 09:42:09,207 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:42:09,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-28 09:42:09,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2021-10-28 09:42:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.2) internal successors, (78), 69 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-10-28 09:42:09,221 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 19 [2021-10-28 09:42:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:09,221 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-10-28 09:42:09,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-10-28 09:42:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:42:09,223 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:09,223 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:09,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:09,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 09:42:09,447 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:09,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:09,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1897281469, now seen corresponding path program 1 times [2021-10-28 09:42:09,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:09,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203638077] [2021-10-28 09:42:09,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:09,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:09,461 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:09,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237053075] [2021-10-28 09:42:09,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:09,462 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:09,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:09,463 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:09,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 09:42:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:09,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 09:42:09,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:09,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:09,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203638077] [2021-10-28 09:42:09,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:09,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237053075] [2021-10-28 09:42:09,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237053075] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:09,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:09,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:42:09,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637992441] [2021-10-28 09:42:09,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:42:09,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:09,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:42:09,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:42:09,884 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:10,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:10,018 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2021-10-28 09:42:10,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:42:10,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-28 09:42:10,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:10,020 INFO L225 Difference]: With dead ends: 112 [2021-10-28 09:42:10,020 INFO L226 Difference]: Without dead ends: 100 [2021-10-28 09:42:10,020 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:42:10,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-28 09:42:10,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2021-10-28 09:42:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.206896551724138) internal successors, (105), 91 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:10,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2021-10-28 09:42:10,036 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 21 [2021-10-28 09:42:10,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:10,037 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2021-10-28 09:42:10,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:10,037 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2021-10-28 09:42:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 09:42:10,040 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:10,040 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:10,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:10,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:10,255 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:10,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:10,255 INFO L85 PathProgramCache]: Analyzing trace with hash 22725340, now seen corresponding path program 1 times [2021-10-28 09:42:10,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:10,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25644202] [2021-10-28 09:42:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:10,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:10,279 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:10,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868717822] [2021-10-28 09:42:10,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:10,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:10,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:10,284 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:10,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 09:42:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:10,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:42:10,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:10,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:10,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25644202] [2021-10-28 09:42:10,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:10,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868717822] [2021-10-28 09:42:10,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868717822] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:10,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:10,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:42:10,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656234829] [2021-10-28 09:42:10,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:42:10,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:42:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:42:10,760 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:10,910 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2021-10-28 09:42:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:42:10,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-28 09:42:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:10,912 INFO L225 Difference]: With dead ends: 120 [2021-10-28 09:42:10,912 INFO L226 Difference]: Without dead ends: 116 [2021-10-28 09:42:10,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:42:10,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-28 09:42:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2021-10-28 09:42:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 102 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-10-28 09:42:10,925 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 25 [2021-10-28 09:42:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:10,925 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-10-28 09:42:10,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-10-28 09:42:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 09:42:10,926 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:10,927 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:10,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:11,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:11,146 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:11,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:11,147 INFO L85 PathProgramCache]: Analyzing trace with hash 280831196, now seen corresponding path program 2 times [2021-10-28 09:42:11,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:11,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424136970] [2021-10-28 09:42:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:11,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:11,159 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:11,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032081288] [2021-10-28 09:42:11,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:42:11,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:11,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:11,161 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:11,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 09:42:11,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:42:11,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:11,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:42:11,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:11,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:11,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424136970] [2021-10-28 09:42:11,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:11,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032081288] [2021-10-28 09:42:11,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032081288] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:11,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:11,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:42:11,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350085913] [2021-10-28 09:42:11,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:42:11,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:11,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:42:11,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:42:11,668 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:11,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:11,806 INFO L93 Difference]: Finished difference Result 123 states and 140 transitions. [2021-10-28 09:42:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:42:11,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-28 09:42:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:11,807 INFO L225 Difference]: With dead ends: 123 [2021-10-28 09:42:11,807 INFO L226 Difference]: Without dead ends: 113 [2021-10-28 09:42:11,808 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:42:11,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-28 09:42:11,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2021-10-28 09:42:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 109 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:11,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2021-10-28 09:42:11,820 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 25 [2021-10-28 09:42:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:11,821 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2021-10-28 09:42:11,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2021-10-28 09:42:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:42:11,822 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:11,822 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:11,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:12,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:12,047 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:12,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:12,047 INFO L85 PathProgramCache]: Analyzing trace with hash 307112929, now seen corresponding path program 2 times [2021-10-28 09:42:12,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:12,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342867012] [2021-10-28 09:42:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:12,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:12,063 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:12,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801461653] [2021-10-28 09:42:12,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:42:12,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:12,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:12,065 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:12,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 09:42:12,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:42:12,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:12,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-28 09:42:12,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:12,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:12,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342867012] [2021-10-28 09:42:12,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:12,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801461653] [2021-10-28 09:42:12,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801461653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:12,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:12,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 09:42:12,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035475554] [2021-10-28 09:42:12,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:42:12,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:12,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:42:12,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:42:12,889 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:13,298 INFO L93 Difference]: Finished difference Result 144 states and 163 transitions. [2021-10-28 09:42:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:42:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-28 09:42:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:13,300 INFO L225 Difference]: With dead ends: 144 [2021-10-28 09:42:13,300 INFO L226 Difference]: Without dead ends: 142 [2021-10-28 09:42:13,301 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:42:13,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-28 09:42:13,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 114. [2021-10-28 09:42:13,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.201834862385321) internal successors, (131), 113 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2021-10-28 09:42:13,314 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 27 [2021-10-28 09:42:13,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:13,314 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2021-10-28 09:42:13,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2021-10-28 09:42:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:42:13,315 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:13,315 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:13,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:13,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:13,531 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:13,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:13,531 INFO L85 PathProgramCache]: Analyzing trace with hash -704004321, now seen corresponding path program 1 times [2021-10-28 09:42:13,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:13,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757129587] [2021-10-28 09:42:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:13,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:13,553 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:13,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146901795] [2021-10-28 09:42:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:13,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:13,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:13,561 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:13,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 09:42:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:13,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-28 09:42:13,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:14,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:14,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757129587] [2021-10-28 09:42:14,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:14,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146901795] [2021-10-28 09:42:14,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146901795] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:14,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:14,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:42:14,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902512644] [2021-10-28 09:42:14,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:42:14,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:14,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:42:14,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:42:14,442 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:14,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:14,685 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2021-10-28 09:42:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:42:14,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-28 09:42:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:14,687 INFO L225 Difference]: With dead ends: 142 [2021-10-28 09:42:14,687 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 09:42:14,688 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:42:14,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 09:42:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2021-10-28 09:42:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.1926605504587156) internal successors, (130), 113 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-10-28 09:42:14,702 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 27 [2021-10-28 09:42:14,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:14,702 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-10-28 09:42:14,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-10-28 09:42:14,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:42:14,708 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:14,708 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:14,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:14,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 09:42:14,936 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:14,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:14,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2026408958, now seen corresponding path program 1 times [2021-10-28 09:42:14,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:14,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426740291] [2021-10-28 09:42:14,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:14,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:14,971 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:14,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100581963] [2021-10-28 09:42:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:14,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:14,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:14,974 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:14,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 09:42:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:15,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-28 09:42:15,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:16,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:16,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426740291] [2021-10-28 09:42:16,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:16,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100581963] [2021-10-28 09:42:16,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100581963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:16,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:16,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 09:42:16,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944574261] [2021-10-28 09:42:16,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:42:16,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:16,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:42:16,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:42:16,211 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:16,689 INFO L93 Difference]: Finished difference Result 147 states and 164 transitions. [2021-10-28 09:42:16,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:42:16,690 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-28 09:42:16,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:16,691 INFO L225 Difference]: With dead ends: 147 [2021-10-28 09:42:16,691 INFO L226 Difference]: Without dead ends: 135 [2021-10-28 09:42:16,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:42:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-28 09:42:16,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 107. [2021-10-28 09:42:16,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 106 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:16,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2021-10-28 09:42:16,709 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 29 [2021-10-28 09:42:16,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:16,710 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2021-10-28 09:42:16,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:16,710 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2021-10-28 09:42:16,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:42:16,711 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:16,711 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:16,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:16,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 09:42:16,935 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:16,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1247489984, now seen corresponding path program 2 times [2021-10-28 09:42:16,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:16,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204504091] [2021-10-28 09:42:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:16,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:16,964 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:16,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453341282] [2021-10-28 09:42:16,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:42:16,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:16,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:16,969 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:16,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 09:42:17,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:42:17,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:17,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-28 09:42:17,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:18,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:18,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204504091] [2021-10-28 09:42:18,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:18,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453341282] [2021-10-28 09:42:18,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453341282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:18,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:18,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:42:18,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959804399] [2021-10-28 09:42:18,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:42:18,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:18,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:42:18,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:42:18,021 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:18,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:18,394 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2021-10-28 09:42:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:42:18,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-28 09:42:18,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:18,396 INFO L225 Difference]: With dead ends: 150 [2021-10-28 09:42:18,396 INFO L226 Difference]: Without dead ends: 138 [2021-10-28 09:42:18,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:42:18,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-28 09:42:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 115. [2021-10-28 09:42:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.1818181818181819) internal successors, (130), 114 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2021-10-28 09:42:18,412 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 29 [2021-10-28 09:42:18,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:18,413 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2021-10-28 09:42:18,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:18,414 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2021-10-28 09:42:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:42:18,414 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:18,415 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:18,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:18,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 09:42:18,631 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:18,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:18,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1883919521, now seen corresponding path program 3 times [2021-10-28 09:42:18,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:18,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731640215] [2021-10-28 09:42:18,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:18,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:18,651 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:18,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611375469] [2021-10-28 09:42:18,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:42:18,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:18,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:18,656 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:18,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 09:42:19,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 09:42:19,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:19,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-28 09:42:19,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-28 09:42:20,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:20,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731640215] [2021-10-28 09:42:20,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:20,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611375469] [2021-10-28 09:42:20,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611375469] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:20,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:20,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 09:42:20,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324283608] [2021-10-28 09:42:20,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:42:20,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:20,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:42:20,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:42:20,117 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:23,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:23,203 INFO L93 Difference]: Finished difference Result 149 states and 165 transitions. [2021-10-28 09:42:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:42:23,203 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-28 09:42:23,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:23,204 INFO L225 Difference]: With dead ends: 149 [2021-10-28 09:42:23,204 INFO L226 Difference]: Without dead ends: 145 [2021-10-28 09:42:23,204 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:42:23,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-28 09:42:23,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2021-10-28 09:42:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.188034188034188) internal successors, (139), 121 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 139 transitions. [2021-10-28 09:42:23,226 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 139 transitions. Word has length 33 [2021-10-28 09:42:23,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:23,227 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 139 transitions. [2021-10-28 09:42:23,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:23,227 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 139 transitions. [2021-10-28 09:42:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:42:23,228 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:23,228 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:23,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:23,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:23,443 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:23,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:23,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2142025377, now seen corresponding path program 4 times [2021-10-28 09:42:23,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:23,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773742367] [2021-10-28 09:42:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:23,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:23,462 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:23,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797740878] [2021-10-28 09:42:23,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:42:23,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:23,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:23,467 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:23,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 09:42:23,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:42:23,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:23,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 09:42:23,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:24,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:24,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773742367] [2021-10-28 09:42:24,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:24,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797740878] [2021-10-28 09:42:24,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797740878] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:24,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:24,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:42:24,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670434888] [2021-10-28 09:42:24,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:42:24,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:24,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:42:24,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:42:24,302 INFO L87 Difference]: Start difference. First operand 122 states and 139 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:24,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:24,492 INFO L93 Difference]: Finished difference Result 150 states and 169 transitions. [2021-10-28 09:42:24,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:42:24,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-28 09:42:24,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:24,495 INFO L225 Difference]: With dead ends: 150 [2021-10-28 09:42:24,495 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 09:42:24,496 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:42:24,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 09:42:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2021-10-28 09:42:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.186046511627907) internal successors, (153), 133 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2021-10-28 09:42:24,526 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 33 [2021-10-28 09:42:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:24,526 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2021-10-28 09:42:24,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:24,527 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2021-10-28 09:42:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:42:24,528 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:24,528 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:24,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:24,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:24,755 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:24,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:24,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2142084959, now seen corresponding path program 5 times [2021-10-28 09:42:24,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:24,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713468635] [2021-10-28 09:42:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:24,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:24,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:24,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250817847] [2021-10-28 09:42:24,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:42:24,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:24,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:24,783 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:24,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 09:42:25,564 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-28 09:42:25,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:25,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 09:42:25,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:25,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:25,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713468635] [2021-10-28 09:42:25,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:25,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250817847] [2021-10-28 09:42:25,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250817847] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:25,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:25,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:42:25,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368914422] [2021-10-28 09:42:25,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:42:25,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:25,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:42:25,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:42:25,973 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:26,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:26,236 INFO L93 Difference]: Finished difference Result 158 states and 178 transitions. [2021-10-28 09:42:26,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:42:26,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-28 09:42:26,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:26,238 INFO L225 Difference]: With dead ends: 158 [2021-10-28 09:42:26,238 INFO L226 Difference]: Without dead ends: 154 [2021-10-28 09:42:26,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:42:26,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-28 09:42:26,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2021-10-28 09:42:26,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.186046511627907) internal successors, (153), 133 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:26,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2021-10-28 09:42:26,261 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 33 [2021-10-28 09:42:26,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:26,261 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2021-10-28 09:42:26,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:26,262 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2021-10-28 09:42:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:42:26,262 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:26,262 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:26,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:26,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 09:42:26,470 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:26,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1066211489, now seen corresponding path program 6 times [2021-10-28 09:42:26,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:26,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704768380] [2021-10-28 09:42:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:26,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:26,479 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:26,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660745167] [2021-10-28 09:42:26,480 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:42:26,480 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:26,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:26,481 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:26,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 09:42:26,925 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-28 09:42:26,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:26,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 09:42:26,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:27,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:27,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704768380] [2021-10-28 09:42:27,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:27,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660745167] [2021-10-28 09:42:27,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660745167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:27,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:27,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:42:27,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705808051] [2021-10-28 09:42:27,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:42:27,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:27,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:42:27,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:42:27,325 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:27,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:27,536 INFO L93 Difference]: Finished difference Result 158 states and 179 transitions. [2021-10-28 09:42:27,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:42:27,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-28 09:42:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:27,537 INFO L225 Difference]: With dead ends: 158 [2021-10-28 09:42:27,538 INFO L226 Difference]: Without dead ends: 148 [2021-10-28 09:42:27,538 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:42:27,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-28 09:42:27,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 138. [2021-10-28 09:42:27,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.1879699248120301) internal successors, (158), 137 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:27,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2021-10-28 09:42:27,561 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 33 [2021-10-28 09:42:27,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:27,561 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2021-10-28 09:42:27,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:27,562 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2021-10-28 09:42:27,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:42:27,562 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:27,563 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:27,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:27,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:27,771 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:27,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:27,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1066271071, now seen corresponding path program 7 times [2021-10-28 09:42:27,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:27,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612154311] [2021-10-28 09:42:27,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:27,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:27,795 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:27,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634305041] [2021-10-28 09:42:27,796 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:42:27,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:27,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:27,797 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:27,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 09:42:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:28,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 09:42:28,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:28,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:28,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612154311] [2021-10-28 09:42:28,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:28,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634305041] [2021-10-28 09:42:28,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634305041] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:28,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:28,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:42:28,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91880944] [2021-10-28 09:42:28,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:42:28,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:28,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:42:28,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:42:28,699 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:29,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:29,189 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2021-10-28 09:42:29,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:42:29,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-28 09:42:29,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:29,191 INFO L225 Difference]: With dead ends: 162 [2021-10-28 09:42:29,191 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 09:42:29,191 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:42:29,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 09:42:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 130. [2021-10-28 09:42:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.192) internal successors, (149), 129 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2021-10-28 09:42:29,213 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 33 [2021-10-28 09:42:29,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:29,213 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2021-10-28 09:42:29,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:29,214 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2021-10-28 09:42:29,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:42:29,214 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:29,215 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:29,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:29,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-10-28 09:42:29,433 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:29,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1324376927, now seen corresponding path program 8 times [2021-10-28 09:42:29,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:29,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306251451] [2021-10-28 09:42:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:29,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:29,456 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:29,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136948992] [2021-10-28 09:42:29,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:42:29,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:29,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:29,458 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:29,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 09:42:29,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:42:29,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:29,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:42:29,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-28 09:42:30,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:30,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306251451] [2021-10-28 09:42:30,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:30,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136948992] [2021-10-28 09:42:30,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136948992] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:30,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:30,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:42:30,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342197423] [2021-10-28 09:42:30,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:42:30,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:30,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:42:30,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:42:30,259 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:30,377 INFO L93 Difference]: Finished difference Result 190 states and 213 transitions. [2021-10-28 09:42:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:42:30,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-28 09:42:30,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:30,380 INFO L225 Difference]: With dead ends: 190 [2021-10-28 09:42:30,380 INFO L226 Difference]: Without dead ends: 180 [2021-10-28 09:42:30,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:42:30,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-28 09:42:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 134. [2021-10-28 09:42:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.193798449612403) internal successors, (154), 133 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 154 transitions. [2021-10-28 09:42:30,402 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 154 transitions. Word has length 33 [2021-10-28 09:42:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:30,402 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 154 transitions. [2021-10-28 09:42:30,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 154 transitions. [2021-10-28 09:42:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 09:42:30,403 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:30,404 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:30,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:30,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-28 09:42:30,611 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:30,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:30,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2086641562, now seen corresponding path program 3 times [2021-10-28 09:42:30,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:30,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251437490] [2021-10-28 09:42:30,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:30,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:30,664 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:30,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256090494] [2021-10-28 09:42:30,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:42:30,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:30,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:30,666 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:30,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 09:42:31,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:42:31,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:31,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-28 09:42:31,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-28 09:42:31,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:31,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251437490] [2021-10-28 09:42:31,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:31,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256090494] [2021-10-28 09:42:31,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256090494] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:31,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:31,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 09:42:31,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568552756] [2021-10-28 09:42:31,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:42:31,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:31,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:42:31,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:42:31,637 INFO L87 Difference]: Start difference. First operand 134 states and 154 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:31,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:31,912 INFO L93 Difference]: Finished difference Result 182 states and 205 transitions. [2021-10-28 09:42:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:42:31,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-28 09:42:31,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:31,914 INFO L225 Difference]: With dead ends: 182 [2021-10-28 09:42:31,914 INFO L226 Difference]: Without dead ends: 180 [2021-10-28 09:42:31,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:42:31,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-28 09:42:31,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 130. [2021-10-28 09:42:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.192) internal successors, (149), 129 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2021-10-28 09:42:31,944 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 35 [2021-10-28 09:42:31,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:31,944 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2021-10-28 09:42:31,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2021-10-28 09:42:31,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 09:42:31,945 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:31,945 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:31,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:32,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-28 09:42:32,162 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:32,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1197208484, now seen corresponding path program 2 times [2021-10-28 09:42:32,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:32,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901715245] [2021-10-28 09:42:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:32,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:32,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:32,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515192075] [2021-10-28 09:42:32,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:42:32,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:32,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:32,175 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:32,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 09:42:32,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:42:32,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:32,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-28 09:42:32,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:33,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:33,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901715245] [2021-10-28 09:42:33,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:33,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515192075] [2021-10-28 09:42:33,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515192075] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:33,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:33,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 09:42:33,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535901638] [2021-10-28 09:42:33,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:42:33,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:33,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:42:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:42:33,800 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:34,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:34,923 INFO L93 Difference]: Finished difference Result 173 states and 195 transitions. [2021-10-28 09:42:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:42:34,923 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-28 09:42:34,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:34,927 INFO L225 Difference]: With dead ends: 173 [2021-10-28 09:42:34,927 INFO L226 Difference]: Without dead ends: 171 [2021-10-28 09:42:34,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:42:34,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-28 09:42:34,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 142. [2021-10-28 09:42:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 141 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2021-10-28 09:42:34,957 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 35 [2021-10-28 09:42:34,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:34,957 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2021-10-28 09:42:34,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2021-10-28 09:42:34,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 09:42:34,958 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:34,959 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:34,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:35,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-28 09:42:35,172 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:35,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1867786844, now seen corresponding path program 3 times [2021-10-28 09:42:35,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:35,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770431460] [2021-10-28 09:42:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:35,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:35,182 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:35,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406626073] [2021-10-28 09:42:35,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:42:35,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:35,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:35,184 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:35,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 09:42:35,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:42:35,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:35,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 09:42:35,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-28 09:42:35,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:35,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770431460] [2021-10-28 09:42:35,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:35,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406626073] [2021-10-28 09:42:35,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406626073] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:35,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:35,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:42:35,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786296423] [2021-10-28 09:42:35,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:42:35,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:35,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:42:35,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:42:35,980 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:36,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:36,611 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2021-10-28 09:42:36,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:42:36,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-28 09:42:36,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:36,613 INFO L225 Difference]: With dead ends: 142 [2021-10-28 09:42:36,613 INFO L226 Difference]: Without dead ends: 128 [2021-10-28 09:42:36,614 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:42:36,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-28 09:42:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 79. [2021-10-28 09:42:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 78 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2021-10-28 09:42:36,640 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 35 [2021-10-28 09:42:36,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:36,640 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2021-10-28 09:42:36,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:36,640 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2021-10-28 09:42:36,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 09:42:36,641 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:36,641 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:36,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:36,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:36,867 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:36,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:36,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1797567334, now seen corresponding path program 9 times [2021-10-28 09:42:36,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:36,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913305510] [2021-10-28 09:42:36,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:36,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:36,878 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:36,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545519624] [2021-10-28 09:42:36,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:42:36,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:36,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:36,880 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:36,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-28 09:42:37,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 09:42:37,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:37,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:42:37,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-28 09:42:37,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:37,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913305510] [2021-10-28 09:42:37,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:37,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545519624] [2021-10-28 09:42:37,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545519624] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:37,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:37,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:42:37,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744261249] [2021-10-28 09:42:37,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:42:37,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:42:37,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:42:37,819 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:40,140 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2021-10-28 09:42:40,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:42:40,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-28 09:42:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:40,142 INFO L225 Difference]: With dead ends: 120 [2021-10-28 09:42:40,142 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 09:42:40,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:42:40,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 09:42:40,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2021-10-28 09:42:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 86 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2021-10-28 09:42:40,165 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 41 [2021-10-28 09:42:40,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:40,165 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2021-10-28 09:42:40,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:40,166 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2021-10-28 09:42:40,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 09:42:40,166 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:40,167 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:40,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:40,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-28 09:42:40,383 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:40,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:40,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1797626916, now seen corresponding path program 10 times [2021-10-28 09:42:40,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:40,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885930078] [2021-10-28 09:42:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:40,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:40,398 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:40,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649094953] [2021-10-28 09:42:40,398 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:42:40,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:40,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:40,405 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:40,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 09:42:41,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:42:41,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:41,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:42:41,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:41,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:41,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885930078] [2021-10-28 09:42:41,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:41,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649094953] [2021-10-28 09:42:41,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649094953] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:41,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:41,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:42:41,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935911936] [2021-10-28 09:42:41,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:42:41,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:41,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:42:41,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:42:41,525 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:41,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:41,862 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2021-10-28 09:42:41,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:42:41,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-28 09:42:41,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:41,864 INFO L225 Difference]: With dead ends: 121 [2021-10-28 09:42:41,864 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 09:42:41,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:42:41,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 09:42:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2021-10-28 09:42:41,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.118279569892473) internal successors, (104), 94 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:41,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2021-10-28 09:42:41,896 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 41 [2021-10-28 09:42:41,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:41,896 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2021-10-28 09:42:41,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:41,897 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2021-10-28 09:42:41,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 09:42:41,897 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:41,897 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:41,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:42,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:42,115 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:42,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:42,115 INFO L85 PathProgramCache]: Analyzing trace with hash 721753446, now seen corresponding path program 11 times [2021-10-28 09:42:42,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:42,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126424841] [2021-10-28 09:42:42,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:42,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:42,129 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:42,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582785978] [2021-10-28 09:42:42,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:42:42,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:42,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:42,131 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:42,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-28 09:42:43,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-28 09:42:43,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:43,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:42:43,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:43,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:43,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126424841] [2021-10-28 09:42:43,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:43,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582785978] [2021-10-28 09:42:43,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582785978] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:43,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:43,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:42:43,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137063483] [2021-10-28 09:42:43,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:42:43,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:43,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:42:43,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:42:43,860 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:44,198 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-10-28 09:42:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:42:44,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-28 09:42:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:44,200 INFO L225 Difference]: With dead ends: 129 [2021-10-28 09:42:44,200 INFO L226 Difference]: Without dead ends: 119 [2021-10-28 09:42:44,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:42:44,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-28 09:42:44,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2021-10-28 09:42:44,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.118811881188119) internal successors, (113), 102 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2021-10-28 09:42:44,228 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 41 [2021-10-28 09:42:44,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:44,228 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2021-10-28 09:42:44,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:44,228 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2021-10-28 09:42:44,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 09:42:44,228 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:44,228 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:44,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-28 09:42:44,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-28 09:42:44,429 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:44,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:44,429 INFO L85 PathProgramCache]: Analyzing trace with hash 721813028, now seen corresponding path program 12 times [2021-10-28 09:42:44,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:44,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404438086] [2021-10-28 09:42:44,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:44,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:44,439 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:44,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036406989] [2021-10-28 09:42:44,440 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:42:44,440 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:44,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:44,444 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:44,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-28 09:42:45,168 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-28 09:42:45,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:45,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:42:45,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:45,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:45,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404438086] [2021-10-28 09:42:45,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:45,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036406989] [2021-10-28 09:42:45,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036406989] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:45,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:45,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:42:45,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162182929] [2021-10-28 09:42:45,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:42:45,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:45,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:42:45,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:42:45,673 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:46,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:46,013 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-10-28 09:42:46,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:42:46,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-28 09:42:46,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:46,014 INFO L225 Difference]: With dead ends: 129 [2021-10-28 09:42:46,014 INFO L226 Difference]: Without dead ends: 119 [2021-10-28 09:42:46,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:42:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-28 09:42:46,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2021-10-28 09:42:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.118811881188119) internal successors, (113), 102 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:46,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2021-10-28 09:42:46,036 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 41 [2021-10-28 09:42:46,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:46,037 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2021-10-28 09:42:46,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:46,037 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2021-10-28 09:42:46,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 09:42:46,037 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:46,037 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:46,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-10-28 09:42:46,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-28 09:42:46,238 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:46,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:46,238 INFO L85 PathProgramCache]: Analyzing trace with hash 979918884, now seen corresponding path program 13 times [2021-10-28 09:42:46,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:46,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116162522] [2021-10-28 09:42:46,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:46,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:46,248 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:46,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384414360] [2021-10-28 09:42:46,249 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:42:46,249 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:46,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:46,252 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:46,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-28 09:42:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:47,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:42:47,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:47,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:47,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116162522] [2021-10-28 09:42:47,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:47,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384414360] [2021-10-28 09:42:47,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384414360] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:47,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:47,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:42:47,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851096029] [2021-10-28 09:42:47,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:42:47,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:47,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:42:47,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:42:47,587 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:48,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:48,092 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-10-28 09:42:48,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:42:48,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-28 09:42:48,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:48,093 INFO L225 Difference]: With dead ends: 129 [2021-10-28 09:42:48,093 INFO L226 Difference]: Without dead ends: 119 [2021-10-28 09:42:48,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:42:48,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-28 09:42:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2021-10-28 09:42:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.118811881188119) internal successors, (113), 102 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2021-10-28 09:42:48,119 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 41 [2021-10-28 09:42:48,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:48,119 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2021-10-28 09:42:48,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:48,119 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2021-10-28 09:42:48,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 09:42:48,119 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:48,120 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:48,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:48,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-28 09:42:48,320 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:48,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:48,321 INFO L85 PathProgramCache]: Analyzing trace with hash 979978466, now seen corresponding path program 14 times [2021-10-28 09:42:48,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:48,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636423468] [2021-10-28 09:42:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:48,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:48,330 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:48,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389230433] [2021-10-28 09:42:48,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:42:48,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:48,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:48,332 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:48,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-28 09:42:49,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:42:49,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:49,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:42:49,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:49,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:49,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636423468] [2021-10-28 09:42:49,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:49,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389230433] [2021-10-28 09:42:49,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389230433] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:49,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:49,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:42:49,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528939882] [2021-10-28 09:42:49,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:42:49,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:49,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:42:49,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:42:49,583 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:49,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:49,867 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-10-28 09:42:49,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:42:49,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-28 09:42:49,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:49,868 INFO L225 Difference]: With dead ends: 129 [2021-10-28 09:42:49,869 INFO L226 Difference]: Without dead ends: 119 [2021-10-28 09:42:49,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:42:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-28 09:42:49,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2021-10-28 09:42:49,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.118811881188119) internal successors, (113), 102 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2021-10-28 09:42:49,901 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 41 [2021-10-28 09:42:49,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:49,902 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2021-10-28 09:42:49,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:49,902 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2021-10-28 09:42:49,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 09:42:49,903 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:49,903 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:49,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:50,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:50,123 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:42:50,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:50,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1029928806, now seen corresponding path program 15 times [2021-10-28 09:42:50,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:50,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573063278] [2021-10-28 09:42:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:50,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:50,133 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:42:50,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921104609] [2021-10-28 09:42:50,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:42:50,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:50,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:50,134 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:50,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-28 09:42:50,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 09:42:50,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:42:50,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:42:50,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-28 09:42:51,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:51,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573063278] [2021-10-28 09:42:51,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:42:51,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921104609] [2021-10-28 09:42:51,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921104609] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:51,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:42:51,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:42:51,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627949666] [2021-10-28 09:42:51,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:42:51,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:51,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:42:51,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:42:51,103 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:51,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:51,175 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-10-28 09:42:51,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:42:51,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-28 09:42:51,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:51,176 INFO L225 Difference]: With dead ends: 103 [2021-10-28 09:42:51,176 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:42:51,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:42:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:42:51,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:42:51,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:42:51,178 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-10-28 09:42:51,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:51,178 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:42:51,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:51,179 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:42:51,179 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:42:51,181 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:42:51,182 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:42:51,182 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:42:51,182 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:42:51,182 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:42:51,182 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:42:51,183 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:42:51,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:51,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:51,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:42:51,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:51,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:51,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:51,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:51,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:52,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:52,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:52,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:52,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:43:11,296 WARN L207 SmtUtils]: Spent 16.39 s on a formula simplification. DAG size of input: 231 DAG size of output: 29 [2021-10-28 09:43:27,491 WARN L207 SmtUtils]: Spent 10.34 s on a formula simplification. DAG size of input: 207 DAG size of output: 41 [2021-10-28 09:43:32,864 WARN L207 SmtUtils]: Spent 5.37 s on a formula simplification. DAG size of input: 249 DAG size of output: 30 [2021-10-28 09:43:37,868 WARN L207 SmtUtils]: Spent 5.00 s on a formula simplification. DAG size of input: 267 DAG size of output: 44 [2021-10-28 09:43:37,871 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 09:43:37,871 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-28 09:43:37,871 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-10-28 09:43:37,871 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-28 09:43:37,872 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-10-28 09:43:37,872 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-28 09:43:37,872 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 38 39) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-10-28 09:43:37,872 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-28 09:43:37,872 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-10-28 09:43:37,873 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-28 09:43:37,873 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 09:43:37,873 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:43:37,873 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~s~0 1)) (.cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse6 (<= 1 ULTIMATE.start_main_~x~0)) (.cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~r~0 0) .cse5 .cse6 .cse7) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse8 .cse7) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse0 (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) .cse2 .cse3 .cse6 .cse8 (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))))) [2021-10-28 09:43:37,873 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:43:37,874 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-10-28 09:43:37,874 INFO L853 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= 1 ULTIMATE.start_main_~x~0))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~s~0 1) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-28 09:43:37,874 INFO L857 garLoopResultBuilder]: For program point L11-18(lines 11 14) no Hoare annotation was computed. [2021-10-28 09:43:37,874 INFO L860 garLoopResultBuilder]: At program point L11-20(lines 10 16) the Hoare annotation is: true [2021-10-28 09:43:37,874 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-28 09:43:37,874 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-28 09:43:37,875 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-28 09:43:37,875 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-28 09:43:37,875 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-28 09:43:37,875 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-10-28 09:43:37,875 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2021-10-28 09:43:37,875 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 09:43:37,876 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 09:43:37,876 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 09:43:37,876 INFO L860 garLoopResultBuilder]: At program point L56(lines 18 57) the Hoare annotation is: true [2021-10-28 09:43:37,876 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-28 09:43:37,876 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-10-28 09:43:37,876 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:43:37,877 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 09:43:37,877 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 49) no Hoare annotation was computed. [2021-10-28 09:43:37,877 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-28 09:43:37,877 INFO L853 garLoopResultBuilder]: At program point L41-2(lines 33 50) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse0 (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (<= 1 ULTIMATE.start_main_~x~0) .cse2) (and .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 (div (+ ULTIMATE.start_main_~a~0 (* (- 1) ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0)) ULTIMATE.start_main_~p~0)) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-28 09:43:37,877 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-28 09:43:37,877 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:43:37,878 INFO L857 garLoopResultBuilder]: For program point L33-2(lines 33 50) no Hoare annotation was computed. [2021-10-28 09:43:37,878 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 09:43:37,881 INFO L731 BasicCegarLoop]: Path program histogram: [15, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:37,883 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:43:37,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:43:37 BoogieIcfgContainer [2021-10-28 09:43:37,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:43:37,906 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:43:37,906 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:43:37,906 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:43:37,907 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:42:03" (3/4) ... [2021-10-28 09:43:37,910 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:43:37,921 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-28 09:43:37,921 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:43:37,921 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:43:37,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:43:37,969 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:43:37,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:43:37,970 INFO L168 Benchmark]: Toolchain (without parser) took 94842.05 ms. Allocated memory was 86.0 MB in the beginning and 302.0 MB in the end (delta: 216.0 MB). Free memory was 52.8 MB in the beginning and 65.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 201.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:37,971 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory was 60.7 MB in the beginning and 60.6 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:43:37,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.53 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 52.7 MB in the beginning and 95.9 MB in the end (delta: -43.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:37,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.54 ms. Allocated memory is still 119.5 MB. Free memory was 95.9 MB in the beginning and 94.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:37,972 INFO L168 Benchmark]: Boogie Preprocessor took 47.89 ms. Allocated memory is still 119.5 MB. Free memory was 94.2 MB in the beginning and 92.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:37,972 INFO L168 Benchmark]: RCFGBuilder took 326.34 ms. Allocated memory is still 119.5 MB. Free memory was 92.9 MB in the beginning and 81.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:37,973 INFO L168 Benchmark]: TraceAbstraction took 94045.55 ms. Allocated memory was 119.5 MB in the beginning and 302.0 MB in the end (delta: 182.5 MB). Free memory was 81.5 MB in the beginning and 68.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 211.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:37,973 INFO L168 Benchmark]: Witness Printer took 63.37 ms. Allocated memory is still 302.0 MB. Free memory was 68.6 MB in the beginning and 65.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:37,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory was 60.7 MB in the beginning and 60.6 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.53 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 52.7 MB in the beginning and 95.9 MB in the end (delta: -43.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.54 ms. Allocated memory is still 119.5 MB. Free memory was 95.9 MB in the beginning and 94.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.89 ms. Allocated memory is still 119.5 MB. Free memory was 94.2 MB in the beginning and 92.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 326.34 ms. Allocated memory is still 119.5 MB. Free memory was 92.9 MB in the beginning and 81.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 94045.55 ms. Allocated memory was 119.5 MB in the beginning and 302.0 MB in the end (delta: 182.5 MB). Free memory was 81.5 MB in the beginning and 68.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 211.3 MB. Max. memory is 16.1 GB. * Witness Printer took 63.37 ms. Allocated memory is still 302.0 MB. Free memory was 68.6 MB in the beginning and 65.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 93.9s, OverallIterations: 31, TraceHistogramMax: 5, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 46.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 929 SDtfs, 1118 SDslu, 2820 SDs, 0 SdLazy, 4241 SolverSat, 328 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 955 GetRequests, 691 SyntacticMatches, 3 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=23, InterpolantAutomatonStates: 259, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 31 MinimizatonAttempts, 566 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 93 NumberOfFragments, 404 HoareAnnotationTreeSize, 9 FomulaSimplifications, 1997702 FormulaSimplificationTreeSizeReduction, 1.6s HoareSimplificationTime, 9 FomulaSimplificationsInter, 360544 FormulaSimplificationTreeSizeReductionInter, 44.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 885 NumberOfCodeBlocks, 809 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 854 ConstructedInterpolants, 2 QuantifiedInterpolants, 11243 SizeOfPredicates, 236 NumberOfNonLiveVariables, 3475 ConjunctsInSsa, 706 ConjunctsInUnsatCore, 31 InterpolantComputations, 6 PerfectInterpolantSequences, 177/788 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((s * y + q * x == b && cond == 1) && 1 <= y) && 1 <= x) && b == a) && b == r * y + p * x) || ((((((cond == 1 && 1 == cond) && 1 <= y) && q == 0) && s == 1) && 1 <= x) && b == y) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && 1 <= x) && a == r * y + p * x - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && 1 <= x) && a == r * y + p * x - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && 1 <= x) && b == a) && b == r * y + p * x - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && a == x) && p == 1) && 1 == cond) && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= x) && b == y) || ((((((((cond == 1 && p == 1) && 1 == cond) && 1 <= y) && q == 0) && s == 1) && 1 <= x) && b == a) && b == y)) || (((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && 1 <= x) && b == a) && b == r * y + p * x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && 1 <= x) && a == r * y + p * x - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && 1 <= x) && a == r * y + p * x) || ((((((((cond == 1 && p == 1) && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= (a + -1 * r * b) / p) && a == r * y + p * x) && b == y) RESULT: Ultimate proved your program to be correct! [2021-10-28 09:43:38,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd34c48b-97fa-424f-8738-064a44a21944/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...