./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem10_label10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem10_label10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt --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 5548fe8f778e7c2708ef61e0a888b0a58ecb52f0 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:02:34,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:02:34,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:02:34,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:02:34,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:02:34,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:02:34,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:02:34,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:02:34,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:02:34,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:02:34,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:02:34,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:02:34,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:02:34,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:02:34,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:02:34,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:02:34,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:02:34,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:02:34,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:02:34,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:02:34,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:02:34,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:02:34,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:02:34,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:02:34,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:02:34,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:02:34,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:02:34,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:02:34,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:02:34,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:02:34,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:02:34,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:02:34,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:02:34,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:02:34,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:02:34,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:02:34,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:02:34,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:02:34,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:02:34,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:02:34,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:02:34,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:02:34,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:02:34,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:02:34,689 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:02:34,689 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:02:34,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:02:34,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:02:34,691 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:02:34,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:02:34,691 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:02:34,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:02:34,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:02:34,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:02:34,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:02:34,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:02:34,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:02:34,692 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:02:34,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:02:34,693 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:02:34,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:02:34,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:02:34,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:02:34,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:02:34,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:02:34,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:02:34,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:02:34,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:02:34,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:02:34,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:02:34,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:02:34,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:02:34,695 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_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5548fe8f778e7c2708ef61e0a888b0a58ecb52f0 [2021-10-13 00:02:34,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:02:34,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:02:34,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:02:34,985 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:02:34,986 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:02:34,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/eca-rers2012/Problem10_label10.c [2021-10-13 00:02:35,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/data/bb1cb999a/e03d2c68449c420cbc07247fe64047fe/FLAGe015ee86c [2021-10-13 00:02:35,709 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:02:35,709 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/sv-benchmarks/c/eca-rers2012/Problem10_label10.c [2021-10-13 00:02:35,722 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/data/bb1cb999a/e03d2c68449c420cbc07247fe64047fe/FLAGe015ee86c [2021-10-13 00:02:35,902 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/data/bb1cb999a/e03d2c68449c420cbc07247fe64047fe [2021-10-13 00:02:35,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:02:35,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:02:35,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:02:35,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:02:35,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:02:35,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:02:35" (1/1) ... [2021-10-13 00:02:35,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e201b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:02:35, skipping insertion in model container [2021-10-13 00:02:35,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:02:35" (1/1) ... [2021-10-13 00:02:35,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:02:35,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:02:36,211 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_4345e7b8-2ae2-468f-986b-d397bc6622fb/sv-benchmarks/c/eca-rers2012/Problem10_label10.c[5544,5557] [2021-10-13 00:02:36,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:02:36,393 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:02:36,456 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_4345e7b8-2ae2-468f-986b-d397bc6622fb/sv-benchmarks/c/eca-rers2012/Problem10_label10.c[5544,5557] [2021-10-13 00:02:36,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:02:36,582 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:02:36,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:02:36 WrapperNode [2021-10-13 00:02:36,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:02:36,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:02:36,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:02:36,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:02:36,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:02:36" (1/1) ... [2021-10-13 00:02:36,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:02:36" (1/1) ... [2021-10-13 00:02:36,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:02:36,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:02:36,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:02:36,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:02:36,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:02:36" (1/1) ... [2021-10-13 00:02:36,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:02:36" (1/1) ... [2021-10-13 00:02:36,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:02:36" (1/1) ... [2021-10-13 00:02:36,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:02:36" (1/1) ... [2021-10-13 00:02:36,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:02:36" (1/1) ... [2021-10-13 00:02:36,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:02:36" (1/1) ... [2021-10-13 00:02:36,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:02:36" (1/1) ... [2021-10-13 00:02:36,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:02:36,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:02:36,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:02:36,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:02:36,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:02:36" (1/1) ... [2021-10-13 00:02:36,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:02:36,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:02:36,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:02:36,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:02:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:02:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:02:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:02:36,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:02:38,289 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:02:38,289 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 00:02:38,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:02:38 BoogieIcfgContainer [2021-10-13 00:02:38,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:02:38,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:02:38,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:02:38,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:02:38,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:02:35" (1/3) ... [2021-10-13 00:02:38,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbafece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:02:38, skipping insertion in model container [2021-10-13 00:02:38,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:02:36" (2/3) ... [2021-10-13 00:02:38,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbafece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:02:38, skipping insertion in model container [2021-10-13 00:02:38,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:02:38" (3/3) ... [2021-10-13 00:02:38,355 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2021-10-13 00:02:38,360 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:02:38,361 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:02:38,474 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:02:38,481 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 00:02:38,489 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:02:38,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 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) [2021-10-13 00:02:38,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-13 00:02:38,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:02:38,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:02:38,532 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:02:38,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:02:38,541 INFO L82 PathProgramCache]: Analyzing trace with hash 563919826, now seen corresponding path program 1 times [2021-10-13 00:02:38,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:02:38,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460133535] [2021-10-13 00:02:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:38,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:02:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:02:38,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:02:38,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460133535] [2021-10-13 00:02:38,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460133535] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:02:38,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:02:38,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:02:38,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108292945] [2021-10-13 00:02:38,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:02:38,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:02:38,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:02:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:38,948 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 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 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:02:39,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:02:39,972 INFO L93 Difference]: Finished difference Result 552 states and 966 transitions. [2021-10-13 00:02:39,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:02:39,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-13 00:02:39,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:02:39,994 INFO L225 Difference]: With dead ends: 552 [2021-10-13 00:02:39,994 INFO L226 Difference]: Without dead ends: 282 [2021-10-13 00:02:40,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-13 00:02:40,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-10-13 00:02:40,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.3416370106761566) internal successors, (377), 281 states have internal predecessors, (377), 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) [2021-10-13 00:02:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 377 transitions. [2021-10-13 00:02:40,089 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 377 transitions. Word has length 48 [2021-10-13 00:02:40,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:02:40,090 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 377 transitions. [2021-10-13 00:02:40,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:02:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 377 transitions. [2021-10-13 00:02:40,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-10-13 00:02:40,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:02:40,096 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:02:40,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:02:40,097 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:02:40,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:02:40,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1480196830, now seen corresponding path program 1 times [2021-10-13 00:02:40,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:02:40,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842593451] [2021-10-13 00:02:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:40,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:02:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:02:40,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:02:40,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842593451] [2021-10-13 00:02:40,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842593451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:02:40,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196231282] [2021-10-13 00:02:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:40,363 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:02:40,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:02:40,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:02:40,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:02:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:40,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:02:40,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:02:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-13 00:02:40,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196231282] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:02:40,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:02:40,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-10-13 00:02:40,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35587854] [2021-10-13 00:02:40,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:02:40,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:02:40,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:02:40,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:02:40,978 INFO L87 Difference]: Start difference. First operand 282 states and 377 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 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) [2021-10-13 00:02:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:02:41,615 INFO L93 Difference]: Finished difference Result 562 states and 752 transitions. [2021-10-13 00:02:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:02:41,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 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 114 [2021-10-13 00:02:41,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:02:41,625 INFO L225 Difference]: With dead ends: 562 [2021-10-13 00:02:41,629 INFO L226 Difference]: Without dead ends: 560 [2021-10-13 00:02:41,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:02:41,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-10-13 00:02:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 421. [2021-10-13 00:02:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.4071428571428573) internal successors, (591), 420 states have internal predecessors, (591), 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) [2021-10-13 00:02:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 591 transitions. [2021-10-13 00:02:41,672 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 591 transitions. Word has length 114 [2021-10-13 00:02:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:02:41,675 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 591 transitions. [2021-10-13 00:02:41,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 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) [2021-10-13 00:02:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 591 transitions. [2021-10-13 00:02:41,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-13 00:02:41,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:02:41,687 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:02:41,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:02:41,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:02:41,910 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:02:41,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:02:41,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1677633285, now seen corresponding path program 1 times [2021-10-13 00:02:41,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:02:41,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92866043] [2021-10-13 00:02:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:41,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:02:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:02:42,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:02:42,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92866043] [2021-10-13 00:02:42,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92866043] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:02:42,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:02:42,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:02:42,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116153419] [2021-10-13 00:02:42,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:02:42,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:02:42,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:02:42,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:42,076 INFO L87 Difference]: Start difference. First operand 421 states and 591 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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) [2021-10-13 00:02:42,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:02:42,608 INFO L93 Difference]: Finished difference Result 979 states and 1339 transitions. [2021-10-13 00:02:42,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:02:42,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 117 [2021-10-13 00:02:42,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:02:42,613 INFO L225 Difference]: With dead ends: 979 [2021-10-13 00:02:42,613 INFO L226 Difference]: Without dead ends: 560 [2021-10-13 00:02:42,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:42,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-10-13 00:02:42,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2021-10-13 00:02:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.3237924865831843) internal successors, (740), 559 states have internal predecessors, (740), 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) [2021-10-13 00:02:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 740 transitions. [2021-10-13 00:02:42,645 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 740 transitions. Word has length 117 [2021-10-13 00:02:42,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:02:42,645 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 740 transitions. [2021-10-13 00:02:42,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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) [2021-10-13 00:02:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 740 transitions. [2021-10-13 00:02:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-13 00:02:42,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:02:42,656 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:02:42,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:02:42,657 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:02:42,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:02:42,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1938532972, now seen corresponding path program 1 times [2021-10-13 00:02:42,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:02:42,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739101665] [2021-10-13 00:02:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:42,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:02:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:02:42,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:02:42,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739101665] [2021-10-13 00:02:42,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739101665] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:02:42,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:02:42,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:02:42,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747278099] [2021-10-13 00:02:42,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:02:42,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:02:42,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:02:42,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:42,801 INFO L87 Difference]: Start difference. First operand 560 states and 740 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-10-13 00:02:43,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:02:43,413 INFO L93 Difference]: Finished difference Result 1257 states and 1758 transitions. [2021-10-13 00:02:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:02:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 123 [2021-10-13 00:02:43,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:02:43,420 INFO L225 Difference]: With dead ends: 1257 [2021-10-13 00:02:43,421 INFO L226 Difference]: Without dead ends: 838 [2021-10-13 00:02:43,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:43,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-10-13 00:02:43,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 699. [2021-10-13 00:02:43,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.3094555873925502) internal successors, (914), 698 states have internal predecessors, (914), 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) [2021-10-13 00:02:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 914 transitions. [2021-10-13 00:02:43,445 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 914 transitions. Word has length 123 [2021-10-13 00:02:43,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:02:43,447 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 914 transitions. [2021-10-13 00:02:43,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-10-13 00:02:43,448 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 914 transitions. [2021-10-13 00:02:43,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-10-13 00:02:43,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:02:43,451 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:02:43,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:02:43,451 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:02:43,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:02:43,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1289025903, now seen corresponding path program 1 times [2021-10-13 00:02:43,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:02:43,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691740608] [2021-10-13 00:02:43,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:43,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:02:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-13 00:02:43,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:02:43,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691740608] [2021-10-13 00:02:43,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691740608] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:02:43,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:02:43,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:02:43,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114304701] [2021-10-13 00:02:43,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:02:43,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:02:43,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:02:43,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:43,638 INFO L87 Difference]: Start difference. First operand 699 states and 914 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 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) [2021-10-13 00:02:44,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:02:44,170 INFO L93 Difference]: Finished difference Result 1535 states and 2010 transitions. [2021-10-13 00:02:44,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:02:44,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 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) Word has length 183 [2021-10-13 00:02:44,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:02:44,179 INFO L225 Difference]: With dead ends: 1535 [2021-10-13 00:02:44,179 INFO L226 Difference]: Without dead ends: 977 [2021-10-13 00:02:44,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-10-13 00:02:44,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2021-10-13 00:02:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.1905737704918034) internal successors, (1162), 976 states have internal predecessors, (1162), 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) [2021-10-13 00:02:44,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1162 transitions. [2021-10-13 00:02:44,211 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1162 transitions. Word has length 183 [2021-10-13 00:02:44,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:02:44,211 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1162 transitions. [2021-10-13 00:02:44,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 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) [2021-10-13 00:02:44,212 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1162 transitions. [2021-10-13 00:02:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-10-13 00:02:44,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:02:44,216 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:02:44,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:02:44,221 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:02:44,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:02:44,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1428247304, now seen corresponding path program 1 times [2021-10-13 00:02:44,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:02:44,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399187925] [2021-10-13 00:02:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:44,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:02:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:02:44,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:02:44,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399187925] [2021-10-13 00:02:44,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399187925] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:02:44,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:02:44,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:02:44,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833213389] [2021-10-13 00:02:44,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:02:44,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:02:44,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:02:44,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:44,371 INFO L87 Difference]: Start difference. First operand 977 states and 1162 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2021-10-13 00:02:44,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:02:44,920 INFO L93 Difference]: Finished difference Result 2091 states and 2557 transitions. [2021-10-13 00:02:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:02:44,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 200 [2021-10-13 00:02:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:02:44,928 INFO L225 Difference]: With dead ends: 2091 [2021-10-13 00:02:44,928 INFO L226 Difference]: Without dead ends: 1255 [2021-10-13 00:02:44,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:44,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-10-13 00:02:44,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2021-10-13 00:02:44,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.1650717703349283) internal successors, (1461), 1254 states have internal predecessors, (1461), 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) [2021-10-13 00:02:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1461 transitions. [2021-10-13 00:02:44,960 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1461 transitions. Word has length 200 [2021-10-13 00:02:44,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:02:44,961 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 1461 transitions. [2021-10-13 00:02:44,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2021-10-13 00:02:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1461 transitions. [2021-10-13 00:02:44,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-10-13 00:02:44,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:02:44,966 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:02:44,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:02:44,967 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:02:44,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:02:44,967 INFO L82 PathProgramCache]: Analyzing trace with hash -700660365, now seen corresponding path program 1 times [2021-10-13 00:02:44,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:02:44,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329701524] [2021-10-13 00:02:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:44,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:02:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:02:45,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:02:45,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329701524] [2021-10-13 00:02:45,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329701524] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:02:45,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:02:45,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:02:45,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524040109] [2021-10-13 00:02:45,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:02:45,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:02:45,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:02:45,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:02:45,244 INFO L87 Difference]: Start difference. First operand 1255 states and 1461 transitions. Second operand has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 6 states have internal predecessors, (255), 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) [2021-10-13 00:02:45,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:02:45,773 INFO L93 Difference]: Finished difference Result 2424 states and 2831 transitions. [2021-10-13 00:02:45,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:02:45,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 6 states have internal predecessors, (255), 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 255 [2021-10-13 00:02:45,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:02:45,781 INFO L225 Difference]: With dead ends: 2424 [2021-10-13 00:02:45,782 INFO L226 Difference]: Without dead ends: 1255 [2021-10-13 00:02:45,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.0ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:02:45,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-10-13 00:02:45,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2021-10-13 00:02:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.161084529505582) internal successors, (1456), 1254 states have internal predecessors, (1456), 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) [2021-10-13 00:02:45,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1456 transitions. [2021-10-13 00:02:45,817 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1456 transitions. Word has length 255 [2021-10-13 00:02:45,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:02:45,818 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 1456 transitions. [2021-10-13 00:02:45,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 6 states have internal predecessors, (255), 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) [2021-10-13 00:02:45,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1456 transitions. [2021-10-13 00:02:45,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-10-13 00:02:45,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:02:45,824 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:02:45,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 00:02:45,825 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:02:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:02:45,825 INFO L82 PathProgramCache]: Analyzing trace with hash -590602471, now seen corresponding path program 1 times [2021-10-13 00:02:45,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:02:45,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248958206] [2021-10-13 00:02:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:45,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:02:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-10-13 00:02:46,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:02:46,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248958206] [2021-10-13 00:02:46,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248958206] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:02:46,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:02:46,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:02:46,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728327003] [2021-10-13 00:02:46,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:02:46,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:02:46,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:02:46,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:46,035 INFO L87 Difference]: Start difference. First operand 1255 states and 1456 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2021-10-13 00:02:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:02:46,616 INFO L93 Difference]: Finished difference Result 1813 states and 2098 transitions. [2021-10-13 00:02:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:02:46,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 291 [2021-10-13 00:02:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:02:46,627 INFO L225 Difference]: With dead ends: 1813 [2021-10-13 00:02:46,627 INFO L226 Difference]: Without dead ends: 1811 [2021-10-13 00:02:46,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:46,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2021-10-13 00:02:46,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1255. [2021-10-13 00:02:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.161084529505582) internal successors, (1456), 1254 states have internal predecessors, (1456), 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) [2021-10-13 00:02:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1456 transitions. [2021-10-13 00:02:46,670 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1456 transitions. Word has length 291 [2021-10-13 00:02:46,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:02:46,671 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 1456 transitions. [2021-10-13 00:02:46,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2021-10-13 00:02:46,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1456 transitions. [2021-10-13 00:02:46,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-10-13 00:02:46,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:02:46,681 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:02:46,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 00:02:46,681 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:02:46,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:02:46,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1540809719, now seen corresponding path program 1 times [2021-10-13 00:02:46,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:02:46,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966197537] [2021-10-13 00:02:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:46,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:02:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-10-13 00:02:46,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:02:46,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966197537] [2021-10-13 00:02:46,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966197537] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:02:46,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:02:46,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:02:46,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598141336] [2021-10-13 00:02:46,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:02:46,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:02:46,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:02:46,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:46,825 INFO L87 Difference]: Start difference. First operand 1255 states and 1456 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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) [2021-10-13 00:02:47,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:02:47,371 INFO L93 Difference]: Finished difference Result 1396 states and 1605 transitions. [2021-10-13 00:02:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:02:47,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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) Word has length 326 [2021-10-13 00:02:47,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:02:47,379 INFO L225 Difference]: With dead ends: 1396 [2021-10-13 00:02:47,380 INFO L226 Difference]: Without dead ends: 1394 [2021-10-13 00:02:47,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-10-13 00:02:47,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1116. [2021-10-13 00:02:47,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 1.1713004484304932) internal successors, (1306), 1115 states have internal predecessors, (1306), 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) [2021-10-13 00:02:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1306 transitions. [2021-10-13 00:02:47,408 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1306 transitions. Word has length 326 [2021-10-13 00:02:47,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:02:47,409 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1306 transitions. [2021-10-13 00:02:47,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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) [2021-10-13 00:02:47,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1306 transitions. [2021-10-13 00:02:47,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-10-13 00:02:47,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:02:47,417 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:02:47,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 00:02:47,417 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:02:47,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:02:47,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1257806135, now seen corresponding path program 1 times [2021-10-13 00:02:47,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:02:47,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634115204] [2021-10-13 00:02:47,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:47,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:02:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-10-13 00:02:47,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:02:47,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634115204] [2021-10-13 00:02:47,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634115204] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:02:47,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:02:47,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:02:47,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221658798] [2021-10-13 00:02:47,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:02:47,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:02:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:02:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:47,561 INFO L87 Difference]: Start difference. First operand 1116 states and 1306 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2021-10-13 00:02:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:02:48,090 INFO L93 Difference]: Finished difference Result 2369 states and 2844 transitions. [2021-10-13 00:02:48,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:02:48,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 347 [2021-10-13 00:02:48,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:02:48,099 INFO L225 Difference]: With dead ends: 2369 [2021-10-13 00:02:48,099 INFO L226 Difference]: Without dead ends: 1394 [2021-10-13 00:02:48,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:48,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-10-13 00:02:48,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1255. [2021-10-13 00:02:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.164274322169059) internal successors, (1460), 1254 states have internal predecessors, (1460), 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) [2021-10-13 00:02:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1460 transitions. [2021-10-13 00:02:48,136 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1460 transitions. Word has length 347 [2021-10-13 00:02:48,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:02:48,136 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 1460 transitions. [2021-10-13 00:02:48,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2021-10-13 00:02:48,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1460 transitions. [2021-10-13 00:02:48,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2021-10-13 00:02:48,143 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:02:48,144 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:02:48,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 00:02:48,144 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:02:48,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:02:48,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1913104526, now seen corresponding path program 1 times [2021-10-13 00:02:48,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:02:48,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505944242] [2021-10-13 00:02:48,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:48,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:02:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 337 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:02:48,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:02:48,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505944242] [2021-10-13 00:02:48,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505944242] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:02:48,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875268967] [2021-10-13 00:02:48,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:48,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:02:48,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:02:48,382 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:02:48,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:02:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:48,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:02:48,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:02:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-13 00:02:49,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875268967] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:02:49,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:02:49,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-10-13 00:02:49,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263486346] [2021-10-13 00:02:49,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:02:49,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:02:49,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:02:49,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:02:49,367 INFO L87 Difference]: Start difference. First operand 1255 states and 1460 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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) [2021-10-13 00:02:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:02:49,931 INFO L93 Difference]: Finished difference Result 3203 states and 3742 transitions. [2021-10-13 00:02:49,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:02:49,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 348 [2021-10-13 00:02:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:02:49,946 INFO L225 Difference]: With dead ends: 3203 [2021-10-13 00:02:49,946 INFO L226 Difference]: Without dead ends: 2089 [2021-10-13 00:02:49,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:02:49,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2021-10-13 00:02:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2089. [2021-10-13 00:02:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 2088 states have (on average 1.1345785440613028) internal successors, (2369), 2088 states have internal predecessors, (2369), 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) [2021-10-13 00:02:50,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 2369 transitions. [2021-10-13 00:02:50,013 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 2369 transitions. Word has length 348 [2021-10-13 00:02:50,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:02:50,014 INFO L470 AbstractCegarLoop]: Abstraction has 2089 states and 2369 transitions. [2021-10-13 00:02:50,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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) [2021-10-13 00:02:50,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 2369 transitions. [2021-10-13 00:02:50,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-10-13 00:02:50,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:02:50,020 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:02:50,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:02:50,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-13 00:02:50,237 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:02:50,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:02:50,238 INFO L82 PathProgramCache]: Analyzing trace with hash 204603150, now seen corresponding path program 1 times [2021-10-13 00:02:50,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:02:50,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946433516] [2021-10-13 00:02:50,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:02:50,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:02:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:02:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-10-13 00:02:50,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:02:50,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946433516] [2021-10-13 00:02:50,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946433516] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:02:50,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:02:50,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:02:50,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482960644] [2021-10-13 00:02:50,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:02:50,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:02:50,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:02:50,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:50,404 INFO L87 Difference]: Start difference. First operand 2089 states and 2369 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2021-10-13 00:02:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:02:50,957 INFO L93 Difference]: Finished difference Result 4035 states and 4592 transitions. [2021-10-13 00:02:50,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:02:50,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 361 [2021-10-13 00:02:50,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:02:50,959 INFO L225 Difference]: With dead ends: 4035 [2021-10-13 00:02:50,960 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:02:50,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:02:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:02:50,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:02:50,964 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) [2021-10-13 00:02:50,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:02:50,964 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 361 [2021-10-13 00:02:50,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:02:50,965 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:02:50,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2021-10-13 00:02:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:02:50,965 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:02:50,968 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:02:50,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 00:02:50,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:02:50,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:02:51,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:02:51,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:02:51,326 INFO L857 garLoopResultBuilder]: For program point L597(line 597) no Hoare annotation was computed. [2021-10-13 00:02:51,326 INFO L857 garLoopResultBuilder]: For program point L564(lines 564 582) no Hoare annotation was computed. [2021-10-13 00:02:51,326 INFO L857 garLoopResultBuilder]: For program point L333(lines 333 582) no Hoare annotation was computed. [2021-10-13 00:02:51,326 INFO L857 garLoopResultBuilder]: For program point L367(lines 367 582) no Hoare annotation was computed. [2021-10-13 00:02:51,326 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 582) no Hoare annotation was computed. [2021-10-13 00:02:51,326 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 582) no Hoare annotation was computed. [2021-10-13 00:02:51,326 INFO L857 garLoopResultBuilder]: For program point L202-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,327 INFO L857 garLoopResultBuilder]: For program point L169-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,327 INFO L857 garLoopResultBuilder]: For program point L136-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,327 INFO L857 garLoopResultBuilder]: For program point L103-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,327 INFO L857 garLoopResultBuilder]: For program point L70-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,327 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,327 INFO L857 garLoopResultBuilder]: For program point L533(lines 533 582) no Hoare annotation was computed. [2021-10-13 00:02:51,327 INFO L857 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-10-13 00:02:51,327 INFO L857 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-10-13 00:02:51,328 INFO L857 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-10-13 00:02:51,328 INFO L857 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-10-13 00:02:51,328 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-13 00:02:51,328 INFO L857 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-10-13 00:02:51,328 INFO L857 garLoopResultBuilder]: For program point L567(lines 567 582) no Hoare annotation was computed. [2021-10-13 00:02:51,328 INFO L857 garLoopResultBuilder]: For program point L435(lines 435 582) no Hoare annotation was computed. [2021-10-13 00:02:51,328 INFO L857 garLoopResultBuilder]: For program point L336(lines 336 582) no Hoare annotation was computed. [2021-10-13 00:02:51,328 INFO L857 garLoopResultBuilder]: For program point L270(lines 270 582) no Hoare annotation was computed. [2021-10-13 00:02:51,328 INFO L857 garLoopResultBuilder]: For program point L403(lines 403 582) no Hoare annotation was computed. [2021-10-13 00:02:51,329 INFO L857 garLoopResultBuilder]: For program point L370(lines 370 582) no Hoare annotation was computed. [2021-10-13 00:02:51,329 INFO L857 garLoopResultBuilder]: For program point L205-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,329 INFO L857 garLoopResultBuilder]: For program point L172-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,329 INFO L857 garLoopResultBuilder]: For program point L139-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,329 INFO L857 garLoopResultBuilder]: For program point L106-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,329 INFO L857 garLoopResultBuilder]: For program point L73-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,329 INFO L857 garLoopResultBuilder]: For program point L40-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,329 INFO L857 garLoopResultBuilder]: For program point L536(lines 536 582) no Hoare annotation was computed. [2021-10-13 00:02:51,330 INFO L857 garLoopResultBuilder]: For program point L503(lines 503 582) no Hoare annotation was computed. [2021-10-13 00:02:51,330 INFO L857 garLoopResultBuilder]: For program point L470(lines 470 582) no Hoare annotation was computed. [2021-10-13 00:02:51,330 INFO L857 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-10-13 00:02:51,330 INFO L857 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-10-13 00:02:51,330 INFO L857 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-10-13 00:02:51,330 INFO L857 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-10-13 00:02:51,330 INFO L857 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-10-13 00:02:51,330 INFO L857 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-10-13 00:02:51,330 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 582) no Hoare annotation was computed. [2021-10-13 00:02:51,330 INFO L857 garLoopResultBuilder]: For program point L306(lines 306 582) no Hoare annotation was computed. [2021-10-13 00:02:51,331 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 582) no Hoare annotation was computed. [2021-10-13 00:02:51,331 INFO L857 garLoopResultBuilder]: For program point L208-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,331 INFO L857 garLoopResultBuilder]: For program point L175-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,331 INFO L857 garLoopResultBuilder]: For program point L142-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,331 INFO L857 garLoopResultBuilder]: For program point L109-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,331 INFO L857 garLoopResultBuilder]: For program point L76-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,331 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,331 INFO L857 garLoopResultBuilder]: For program point L539(lines 539 582) no Hoare annotation was computed. [2021-10-13 00:02:51,331 INFO L857 garLoopResultBuilder]: For program point L440(lines 440 582) no Hoare annotation was computed. [2021-10-13 00:02:51,332 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 582) no Hoare annotation was computed. [2021-10-13 00:02:51,332 INFO L857 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-10-13 00:02:51,332 INFO L857 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-10-13 00:02:51,332 INFO L857 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-10-13 00:02:51,332 INFO L857 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-10-13 00:02:51,332 INFO L857 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-10-13 00:02:51,332 INFO L857 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-10-13 00:02:51,332 INFO L857 garLoopResultBuilder]: For program point L573(lines 573 582) no Hoare annotation was computed. [2021-10-13 00:02:51,332 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 582) no Hoare annotation was computed. [2021-10-13 00:02:51,333 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 582) no Hoare annotation was computed. [2021-10-13 00:02:51,333 INFO L857 garLoopResultBuilder]: For program point L475(lines 475 582) no Hoare annotation was computed. [2021-10-13 00:02:51,336 INFO L857 garLoopResultBuilder]: For program point L211-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,336 INFO L857 garLoopResultBuilder]: For program point L178-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,336 INFO L857 garLoopResultBuilder]: For program point L145-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,336 INFO L857 garLoopResultBuilder]: For program point L112-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,336 INFO L857 garLoopResultBuilder]: For program point L79-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,337 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,337 INFO L857 garLoopResultBuilder]: For program point L509(lines 509 582) no Hoare annotation was computed. [2021-10-13 00:02:51,337 INFO L857 garLoopResultBuilder]: For program point L311(lines 311 582) no Hoare annotation was computed. [2021-10-13 00:02:51,337 INFO L857 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-10-13 00:02:51,337 INFO L857 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-10-13 00:02:51,337 INFO L857 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-10-13 00:02:51,338 INFO L857 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-10-13 00:02:51,338 INFO L857 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-10-13 00:02:51,338 INFO L857 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-10-13 00:02:51,338 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 582) no Hoare annotation was computed. [2021-10-13 00:02:51,338 INFO L857 garLoopResultBuilder]: For program point L246(lines 246 582) no Hoare annotation was computed. [2021-10-13 00:02:51,338 INFO L857 garLoopResultBuilder]: For program point L544(lines 544 582) no Hoare annotation was computed. [2021-10-13 00:02:51,339 INFO L857 garLoopResultBuilder]: For program point L181-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,339 INFO L857 garLoopResultBuilder]: For program point L148-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,339 INFO L857 garLoopResultBuilder]: For program point L115-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,339 INFO L857 garLoopResultBuilder]: For program point L82-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,339 INFO L857 garLoopResultBuilder]: For program point L49-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,339 INFO L857 garLoopResultBuilder]: For program point L446(lines 446 582) no Hoare annotation was computed. [2021-10-13 00:02:51,340 INFO L857 garLoopResultBuilder]: For program point L413(lines 413 582) no Hoare annotation was computed. [2021-10-13 00:02:51,340 INFO L857 garLoopResultBuilder]: For program point L380(lines 380 582) no Hoare annotation was computed. [2021-10-13 00:02:51,341 INFO L857 garLoopResultBuilder]: For program point L281(lines 281 582) no Hoare annotation was computed. [2021-10-13 00:02:51,341 INFO L857 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-10-13 00:02:51,341 INFO L857 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-10-13 00:02:51,341 INFO L857 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-10-13 00:02:51,342 INFO L857 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-10-13 00:02:51,342 INFO L857 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-10-13 00:02:51,342 INFO L857 garLoopResultBuilder]: For program point L579(lines 579 582) no Hoare annotation was computed. [2021-10-13 00:02:51,342 INFO L857 garLoopResultBuilder]: For program point L249(lines 249 582) no Hoare annotation was computed. [2021-10-13 00:02:51,342 INFO L857 garLoopResultBuilder]: For program point L514(lines 514 582) no Hoare annotation was computed. [2021-10-13 00:02:51,342 INFO L857 garLoopResultBuilder]: For program point L481(lines 481 582) no Hoare annotation was computed. [2021-10-13 00:02:51,343 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 582) no Hoare annotation was computed. [2021-10-13 00:02:51,343 INFO L857 garLoopResultBuilder]: For program point L184-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,343 INFO L857 garLoopResultBuilder]: For program point L151-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,343 INFO L857 garLoopResultBuilder]: For program point L118-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,343 INFO L857 garLoopResultBuilder]: For program point L85-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,343 INFO L857 garLoopResultBuilder]: For program point L52-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,344 INFO L857 garLoopResultBuilder]: For program point L350(lines 350 582) no Hoare annotation was computed. [2021-10-13 00:02:51,344 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:02:51,344 INFO L857 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-10-13 00:02:51,344 INFO L857 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-10-13 00:02:51,344 INFO L857 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-10-13 00:02:51,344 INFO L857 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-10-13 00:02:51,345 INFO L857 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-10-13 00:02:51,345 INFO L853 garLoopResultBuilder]: At program point L583(lines 30 584) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9)) (.cse3 (<= 7 ~a19~0)) (.cse1 (= 14 ~a4~0)) (.cse2 (= ~a12~0 0))) (or (and .cse0 (= ~a10~0 4) .cse1 .cse2) (and (= ~a10~0 0) .cse1 .cse2) (and .cse0 .cse3 .cse1 (= ~a10~0 2) .cse2) (and .cse0 (= ~a10~0 3) .cse1 .cse2) (and .cse3 (= ~a10~0 1) .cse1 .cse2))) [2021-10-13 00:02:51,345 INFO L857 garLoopResultBuilder]: For program point L550(lines 550 582) no Hoare annotation was computed. [2021-10-13 00:02:51,345 INFO L857 garLoopResultBuilder]: For program point L418(lines 418 582) no Hoare annotation was computed. [2021-10-13 00:02:51,346 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 582) no Hoare annotation was computed. [2021-10-13 00:02:51,346 INFO L857 garLoopResultBuilder]: For program point L220(lines 220 582) no Hoare annotation was computed. [2021-10-13 00:02:51,346 INFO L857 garLoopResultBuilder]: For program point L187-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,346 INFO L857 garLoopResultBuilder]: For program point L154-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,346 INFO L857 garLoopResultBuilder]: For program point L121-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,347 INFO L857 garLoopResultBuilder]: For program point L88-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,347 INFO L857 garLoopResultBuilder]: For program point L55-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,347 INFO L857 garLoopResultBuilder]: For program point L452(lines 452 582) no Hoare annotation was computed. [2021-10-13 00:02:51,347 INFO L857 garLoopResultBuilder]: For program point L287(lines 287 582) no Hoare annotation was computed. [2021-10-13 00:02:51,347 INFO L857 garLoopResultBuilder]: For program point L254(lines 254 582) no Hoare annotation was computed. [2021-10-13 00:02:51,347 INFO L857 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-10-13 00:02:51,348 INFO L857 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-13 00:02:51,348 INFO L857 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-10-13 00:02:51,348 INFO L857 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-10-13 00:02:51,348 INFO L857 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-10-13 00:02:51,348 INFO L857 garLoopResultBuilder]: For program point L519(lines 519 582) no Hoare annotation was computed. [2021-10-13 00:02:51,348 INFO L857 garLoopResultBuilder]: For program point L486(lines 486 582) no Hoare annotation was computed. [2021-10-13 00:02:51,349 INFO L860 garLoopResultBuilder]: At program point L586(lines 586 602) the Hoare annotation is: true [2021-10-13 00:02:51,349 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 582) no Hoare annotation was computed. [2021-10-13 00:02:51,349 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 582) no Hoare annotation was computed. [2021-10-13 00:02:51,349 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 582) no Hoare annotation was computed. [2021-10-13 00:02:51,349 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:02:51,350 INFO L857 garLoopResultBuilder]: For program point L190-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,350 INFO L857 garLoopResultBuilder]: For program point L157-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,350 INFO L857 garLoopResultBuilder]: For program point L124-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,350 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,350 INFO L857 garLoopResultBuilder]: For program point L58-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,350 INFO L857 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-10-13 00:02:51,351 INFO L857 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-10-13 00:02:51,351 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-10-13 00:02:51,351 INFO L857 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-10-13 00:02:51,351 INFO L857 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-10-13 00:02:51,351 INFO L857 garLoopResultBuilder]: For program point L555(lines 555 582) no Hoare annotation was computed. [2021-10-13 00:02:51,351 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 582) no Hoare annotation was computed. [2021-10-13 00:02:51,352 INFO L857 garLoopResultBuilder]: For program point L424(lines 424 582) no Hoare annotation was computed. [2021-10-13 00:02:51,354 INFO L857 garLoopResultBuilder]: For program point L259(lines 259 582) no Hoare annotation was computed. [2021-10-13 00:02:51,354 INFO L857 garLoopResultBuilder]: For program point L193-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,355 INFO L857 garLoopResultBuilder]: For program point L160-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,355 INFO L857 garLoopResultBuilder]: For program point L127-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,355 INFO L857 garLoopResultBuilder]: For program point L94-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,355 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:02:51,355 INFO L857 garLoopResultBuilder]: For program point L61-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,355 INFO L857 garLoopResultBuilder]: For program point L524(lines 524 582) no Hoare annotation was computed. [2021-10-13 00:02:51,356 INFO L857 garLoopResultBuilder]: For program point L491(lines 491 582) no Hoare annotation was computed. [2021-10-13 00:02:51,356 INFO L857 garLoopResultBuilder]: For program point L458(lines 458 582) no Hoare annotation was computed. [2021-10-13 00:02:51,356 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 582) no Hoare annotation was computed. [2021-10-13 00:02:51,356 INFO L857 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-10-13 00:02:51,356 INFO L857 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-10-13 00:02:51,356 INFO L857 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-10-13 00:02:51,357 INFO L857 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-10-13 00:02:51,357 INFO L857 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-10-13 00:02:51,357 INFO L857 garLoopResultBuilder]: For program point L558(lines 558 582) no Hoare annotation was computed. [2021-10-13 00:02:51,357 INFO L857 garLoopResultBuilder]: For program point L393(lines 393 582) no Hoare annotation was computed. [2021-10-13 00:02:51,357 INFO L857 garLoopResultBuilder]: For program point L327(lines 327 582) no Hoare annotation was computed. [2021-10-13 00:02:51,358 INFO L853 garLoopResultBuilder]: At program point L592-2(lines 592 601) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9)) (.cse3 (<= 7 ~a19~0)) (.cse1 (= 14 ~a4~0)) (.cse2 (= ~a12~0 0))) (or (and .cse0 (= ~a10~0 4) .cse1 .cse2) (and (= ~a10~0 0) .cse1 .cse2) (and .cse0 .cse3 .cse1 (= ~a10~0 2) .cse2) (and .cse0 (= ~a10~0 3) .cse1 .cse2) (and .cse3 (= ~a10~0 1) .cse1 .cse2))) [2021-10-13 00:02:51,358 INFO L857 garLoopResultBuilder]: For program point L361(lines 361 582) no Hoare annotation was computed. [2021-10-13 00:02:51,358 INFO L857 garLoopResultBuilder]: For program point L196-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,358 INFO L857 garLoopResultBuilder]: For program point L163-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,358 INFO L857 garLoopResultBuilder]: For program point L130-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,358 INFO L857 garLoopResultBuilder]: For program point L97-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,359 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-13 00:02:51,359 INFO L857 garLoopResultBuilder]: For program point L64-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,359 INFO L857 garLoopResultBuilder]: For program point L31-2(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,359 INFO L857 garLoopResultBuilder]: For program point L527(lines 527 582) no Hoare annotation was computed. [2021-10-13 00:02:51,359 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 582) no Hoare annotation was computed. [2021-10-13 00:02:51,359 INFO L857 garLoopResultBuilder]: For program point L230(lines 230 582) no Hoare annotation was computed. [2021-10-13 00:02:51,360 INFO L857 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-10-13 00:02:51,360 INFO L857 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-10-13 00:02:51,360 INFO L857 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-10-13 00:02:51,360 INFO L857 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-10-13 00:02:51,360 INFO L857 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-10-13 00:02:51,360 INFO L857 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-10-13 00:02:51,361 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:02:51,361 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 158) no Hoare annotation was computed. [2021-10-13 00:02:51,361 INFO L857 garLoopResultBuilder]: For program point L429(lines 429 582) no Hoare annotation was computed. [2021-10-13 00:02:51,361 INFO L857 garLoopResultBuilder]: For program point L330(lines 330 582) no Hoare annotation was computed. [2021-10-13 00:02:51,361 INFO L857 garLoopResultBuilder]: For program point L264(lines 264 582) no Hoare annotation was computed. [2021-10-13 00:02:51,362 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 582) no Hoare annotation was computed. [2021-10-13 00:02:51,362 INFO L857 garLoopResultBuilder]: For program point L199-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,362 INFO L857 garLoopResultBuilder]: For program point L166-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,362 INFO L857 garLoopResultBuilder]: For program point L133-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,362 INFO L857 garLoopResultBuilder]: For program point L100-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,362 INFO L857 garLoopResultBuilder]: For program point L67-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,363 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 30 584) no Hoare annotation was computed. [2021-10-13 00:02:51,363 INFO L857 garLoopResultBuilder]: For program point L497(lines 497 582) no Hoare annotation was computed. [2021-10-13 00:02:51,363 INFO L857 garLoopResultBuilder]: For program point L464(lines 464 582) no Hoare annotation was computed. [2021-10-13 00:02:51,363 INFO L857 garLoopResultBuilder]: For program point L398(lines 398 582) no Hoare annotation was computed. [2021-10-13 00:02:51,363 INFO L857 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-10-13 00:02:51,363 INFO L857 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-10-13 00:02:51,364 INFO L857 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-10-13 00:02:51,364 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-13 00:02:51,364 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-10-13 00:02:51,364 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-13 00:02:51,369 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:02:51,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:02:51 BoogieIcfgContainer [2021-10-13 00:02:51,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:02:51,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:02:51,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:02:51,410 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:02:51,411 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:02:38" (3/4) ... [2021-10-13 00:02:51,414 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:02:51,444 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 00:02:51,446 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:02:51,447 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:02:51,448 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:02:51,579 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:02:51,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:02:51,580 INFO L168 Benchmark]: Toolchain (without parser) took 15673.17 ms. Allocated memory was 102.8 MB in the beginning and 264.2 MB in the end (delta: 161.5 MB). Free memory was 60.3 MB in the beginning and 190.7 MB in the end (delta: -130.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:02:51,581 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory is still 78.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:02:51,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.80 ms. Allocated memory is still 102.8 MB. Free memory was 60.1 MB in the beginning and 60.6 MB in the end (delta: -443.6 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:02:51,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 144.21 ms. Allocated memory is still 102.8 MB. Free memory was 60.6 MB in the beginning and 52.7 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:02:51,582 INFO L168 Benchmark]: Boogie Preprocessor took 132.61 ms. Allocated memory is still 102.8 MB. Free memory was 52.7 MB in the beginning and 47.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:02:51,582 INFO L168 Benchmark]: RCFGBuilder took 1426.33 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 47.9 MB in the beginning and 54.2 MB in the end (delta: -6.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:02:51,583 INFO L168 Benchmark]: TraceAbstraction took 13075.15 ms. Allocated memory was 130.0 MB in the beginning and 264.2 MB in the end (delta: 134.2 MB). Free memory was 98.3 MB in the beginning and 205.4 MB in the end (delta: -107.1 MB). Peak memory consumption was 129.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:02:51,583 INFO L168 Benchmark]: Witness Printer took 169.77 ms. Allocated memory is still 264.2 MB. Free memory was 205.4 MB in the beginning and 190.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:02:51,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory is still 78.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 677.80 ms. Allocated memory is still 102.8 MB. Free memory was 60.1 MB in the beginning and 60.6 MB in the end (delta: -443.6 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 144.21 ms. Allocated memory is still 102.8 MB. Free memory was 60.6 MB in the beginning and 52.7 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 132.61 ms. Allocated memory is still 102.8 MB. Free memory was 52.7 MB in the beginning and 47.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1426.33 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 47.9 MB in the beginning and 54.2 MB in the end (delta: -6.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13075.15 ms. Allocated memory was 130.0 MB in the beginning and 264.2 MB in the end (delta: 134.2 MB). Free memory was 98.3 MB in the beginning and 205.4 MB in the end (delta: -107.1 MB). Peak memory consumption was 129.8 MB. Max. memory is 16.1 GB. * Witness Printer took 169.77 ms. Allocated memory is still 264.2 MB. Free memory was 205.4 MB in the beginning and 190.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 158]: 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, 206 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12906.1ms, OverallIterations: 12, TraceHistogramMax: 4, EmptinessCheckTime: 80.3ms, AutomataDifference: 7396.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 356.7ms, InitialAbstractionConstructionTime: 29.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1295 SDtfs, 1251 SDslu, 59 SDs, 0 SdLazy, 4495 SolverSat, 698 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5283.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 498 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2089occurred in iteration=11, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 425.2ms AutomataMinimizationTime, 12 MinimizatonAttempts, 1251 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 133 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1050 FormulaSimplificationTreeSizeReduction, 100.2ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 310 FormulaSimplificationTreeSizeReductionInter, 248.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 191.2ms SsaConstructionTime, 643.0ms SatisfiabilityAnalysisTime, 2872.6ms InterpolantComputationTime, 3175 NumberOfCodeBlocks, 3175 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3161 ConstructedInterpolants, 0 QuantifiedInterpolants, 9684 SizeOfPredicates, 0 NumberOfNonLiveVariables, 699 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 2708/2797 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 1 specifications checked. All of them hold - InvariantResult [Line: 592]: Loop Invariant Derived loop invariant: ((((((a19 <= 9 && a10 == 4) && 14 == a4) && a12 == 0) || ((a10 == 0 && 14 == a4) && a12 == 0)) || ((((a19 <= 9 && 7 <= a19) && 14 == a4) && a10 == 2) && a12 == 0)) || (((a19 <= 9 && a10 == 3) && 14 == a4) && a12 == 0)) || (((7 <= a19 && a10 == 1) && 14 == a4) && a12 == 0) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((a19 <= 9 && a10 == 4) && 14 == a4) && a12 == 0) || ((a10 == 0 && 14 == a4) && a12 == 0)) || ((((a19 <= 9 && 7 <= a19) && 14 == a4) && a10 == 2) && a12 == 0)) || (((a19 <= 9 && a10 == 3) && 14 == a4) && a12 == 0)) || (((7 <= a19 && a10 == 1) && 14 == a4) && a12 == 0) - InvariantResult [Line: 586]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 00:02:51,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345e7b8-2ae2-468f-986b-d397bc6622fb/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...