./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_abp_1-1.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_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/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_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_abp_1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/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_5433da1f-fb1b-4085-80b6-3120201a6b47/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 8e1064ca8851049d7703c5646c80faf613ee8a93 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:05:18,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:05:18,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:05:18,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:05:18,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:05:18,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:05:18,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:05:18,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:05:18,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:05:18,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:05:18,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:05:18,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:05:18,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:05:18,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:05:18,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:05:18,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:05:18,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:05:18,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:05:18,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:05:18,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:05:18,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:05:18,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:05:18,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:05:18,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:05:18,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:05:18,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:05:18,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:05:18,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:05:18,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:05:18,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:05:18,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:05:18,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:05:18,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:05:18,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:05:18,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:05:18,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:05:18,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:05:18,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:05:18,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:05:18,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:05:18,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:05:18,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:05:18,938 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:05:18,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:05:18,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:05:18,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:05:18,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:05:18,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:05:18,948 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:05:18,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:05:18,948 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:05:18,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:05:18,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:05:18,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:05:18,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:05:18,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:05:18,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:05:18,951 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:05:18,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:05:18,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:05:18,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:05:18,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:05:18,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:05:18,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:05:18,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:05:18,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:05:18,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:05:18,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:05:18,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:05:18,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:05:18,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:05:18,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:05:18,955 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_5433da1f-fb1b-4085-80b6-3120201a6b47/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e1064ca8851049d7703c5646c80faf613ee8a93 [2021-10-13 00:05:19,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:05:19,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:05:19,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:05:19,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:05:19,299 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:05:19,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/psyco/psyco_abp_1-1.c [2021-10-13 00:05:19,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/data/da5129fd1/8086f7e47767461a9d6ca0e7b83e05b4/FLAG07de7ba12 [2021-10-13 00:05:20,143 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:05:20,144 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/sv-benchmarks/c/psyco/psyco_abp_1-1.c [2021-10-13 00:05:20,165 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/data/da5129fd1/8086f7e47767461a9d6ca0e7b83e05b4/FLAG07de7ba12 [2021-10-13 00:05:20,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/data/da5129fd1/8086f7e47767461a9d6ca0e7b83e05b4 [2021-10-13 00:05:20,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:05:20,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:05:20,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:05:20,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:05:20,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:05:20,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:05:20" (1/1) ... [2021-10-13 00:05:20,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2edb3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:20, skipping insertion in model container [2021-10-13 00:05:20,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:05:20" (1/1) ... [2021-10-13 00:05:20,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:05:20,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:05:20,826 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_5433da1f-fb1b-4085-80b6-3120201a6b47/sv-benchmarks/c/psyco/psyco_abp_1-1.c[24818,24831] [2021-10-13 00:05:20,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:05:20,847 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:05:20,978 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_5433da1f-fb1b-4085-80b6-3120201a6b47/sv-benchmarks/c/psyco/psyco_abp_1-1.c[24818,24831] [2021-10-13 00:05:20,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:05:21,010 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:05:21,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:21 WrapperNode [2021-10-13 00:05:21,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:05:21,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:05:21,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:05:21,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:05:21,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:21" (1/1) ... [2021-10-13 00:05:21,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:21" (1/1) ... [2021-10-13 00:05:21,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:05:21,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:05:21,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:05:21,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:05:21,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:21" (1/1) ... [2021-10-13 00:05:21,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:21" (1/1) ... [2021-10-13 00:05:21,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:21" (1/1) ... [2021-10-13 00:05:21,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:21" (1/1) ... [2021-10-13 00:05:21,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:21" (1/1) ... [2021-10-13 00:05:21,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:21" (1/1) ... [2021-10-13 00:05:21,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:21" (1/1) ... [2021-10-13 00:05:21,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:05:21,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:05:21,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:05:21,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:05:21,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:21" (1/1) ... [2021-10-13 00:05:21,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:05:21,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:21,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:05:21,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:05:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:05:21,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:05:21,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:05:21,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:05:22,276 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:05:22,279 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 00:05:22,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:05:22 BoogieIcfgContainer [2021-10-13 00:05:22,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:05:22,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:05:22,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:05:22,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:05:22,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:05:20" (1/3) ... [2021-10-13 00:05:22,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f28c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:05:22, skipping insertion in model container [2021-10-13 00:05:22,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:21" (2/3) ... [2021-10-13 00:05:22,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f28c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:05:22, skipping insertion in model container [2021-10-13 00:05:22,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:05:22" (3/3) ... [2021-10-13 00:05:22,299 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-1.c [2021-10-13 00:05:22,306 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:05:22,306 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:05:22,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:05:22,384 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 00:05:22,385 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:05:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.9537037037037037) internal successors, (211), 109 states have internal predecessors, (211), 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 00:05:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:05:22,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:22,417 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:22,418 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:22,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:22,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1895078531, now seen corresponding path program 1 times [2021-10-13 00:05:22,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:22,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206044502] [2021-10-13 00:05:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:22,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:22,740 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 00:05:22,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:22,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206044502] [2021-10-13 00:05:22,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206044502] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:05:22,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:05:22,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:05:22,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419770562] [2021-10-13 00:05:22,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:05:22,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:22,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:05:22,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:05:22,807 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.9537037037037037) internal successors, (211), 109 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 00:05:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:22,841 INFO L93 Difference]: Finished difference Result 218 states and 420 transitions. [2021-10-13 00:05:22,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:05:22,843 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-10-13 00:05:22,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:22,857 INFO L225 Difference]: With dead ends: 218 [2021-10-13 00:05:22,857 INFO L226 Difference]: Without dead ends: 106 [2021-10-13 00:05:22,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:05:22,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-13 00:05:22,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-10-13 00:05:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.6857142857142857) internal successors, (177), 105 states have internal predecessors, (177), 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 00:05:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 177 transitions. [2021-10-13 00:05:22,941 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 177 transitions. Word has length 10 [2021-10-13 00:05:22,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:22,941 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 177 transitions. [2021-10-13 00:05:22,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 00:05:22,942 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 177 transitions. [2021-10-13 00:05:22,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:05:22,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:22,944 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:22,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:05:22,944 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:22,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:22,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1914595175, now seen corresponding path program 1 times [2021-10-13 00:05:22,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:22,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674283735] [2021-10-13 00:05:22,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:22,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:23,018 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 00:05:23,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:23,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674283735] [2021-10-13 00:05:23,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674283735] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:05:23,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:05:23,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:05:23,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488968790] [2021-10-13 00:05:23,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:05:23,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:23,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:05:23,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:23,029 INFO L87 Difference]: Start difference. First operand 106 states and 177 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:23,125 INFO L93 Difference]: Finished difference Result 214 states and 358 transitions. [2021-10-13 00:05:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:05:23,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 00:05:23,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:23,128 INFO L225 Difference]: With dead ends: 214 [2021-10-13 00:05:23,130 INFO L226 Difference]: Without dead ends: 110 [2021-10-13 00:05:23,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:23,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-13 00:05:23,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-10-13 00:05:23,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.6697247706422018) internal successors, (182), 109 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 00:05:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 182 transitions. [2021-10-13 00:05:23,162 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 182 transitions. Word has length 11 [2021-10-13 00:05:23,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:23,163 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 182 transitions. [2021-10-13 00:05:23,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 182 transitions. [2021-10-13 00:05:23,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:05:23,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:23,166 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:23,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:05:23,167 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:23,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:23,170 INFO L82 PathProgramCache]: Analyzing trace with hash 100490260, now seen corresponding path program 1 times [2021-10-13 00:05:23,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:23,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135181236] [2021-10-13 00:05:23,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:23,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:23,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:23,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:23,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135181236] [2021-10-13 00:05:23,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135181236] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:05:23,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:05:23,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:05:23,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035180653] [2021-10-13 00:05:23,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:05:23,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:23,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:05:23,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:23,375 INFO L87 Difference]: Start difference. First operand 110 states and 182 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:23,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:23,604 INFO L93 Difference]: Finished difference Result 324 states and 540 transitions. [2021-10-13 00:05:23,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:05:23,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 00:05:23,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:23,619 INFO L225 Difference]: With dead ends: 324 [2021-10-13 00:05:23,622 INFO L226 Difference]: Without dead ends: 195 [2021-10-13 00:05:23,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:23,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-13 00:05:23,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2021-10-13 00:05:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.644808743169399) internal successors, (301), 183 states have internal predecessors, (301), 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 00:05:23,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 301 transitions. [2021-10-13 00:05:23,654 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 301 transitions. Word has length 17 [2021-10-13 00:05:23,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:23,655 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 301 transitions. [2021-10-13 00:05:23,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:23,655 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 301 transitions. [2021-10-13 00:05:23,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:05:23,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:23,659 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:23,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:05:23,660 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:23,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:23,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1571478032, now seen corresponding path program 1 times [2021-10-13 00:05:23,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:23,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186369985] [2021-10-13 00:05:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:23,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:23,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:23,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186369985] [2021-10-13 00:05:23,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186369985] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:05:23,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:05:23,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:05:23,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235636210] [2021-10-13 00:05:23,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:05:23,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:23,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:05:23,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:23,775 INFO L87 Difference]: Start difference. First operand 184 states and 301 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:23,809 INFO L93 Difference]: Finished difference Result 314 states and 514 transitions. [2021-10-13 00:05:23,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:05:23,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 00:05:23,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:23,811 INFO L225 Difference]: With dead ends: 314 [2021-10-13 00:05:23,811 INFO L226 Difference]: Without dead ends: 133 [2021-10-13 00:05:23,813 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:23,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-13 00:05:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2021-10-13 00:05:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.623076923076923) internal successors, (211), 130 states have internal predecessors, (211), 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 00:05:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 211 transitions. [2021-10-13 00:05:23,824 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 211 transitions. Word has length 18 [2021-10-13 00:05:23,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:23,825 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 211 transitions. [2021-10-13 00:05:23,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:23,825 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 211 transitions. [2021-10-13 00:05:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:05:23,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:23,827 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:23,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:05:23,828 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:23,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:23,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1260642915, now seen corresponding path program 1 times [2021-10-13 00:05:23,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:23,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857741847] [2021-10-13 00:05:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:23,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 00:05:23,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:23,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857741847] [2021-10-13 00:05:23,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857741847] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:05:23,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:05:23,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:05:23,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77508150] [2021-10-13 00:05:23,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:05:23,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:05:23,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:23,929 INFO L87 Difference]: Start difference. First operand 131 states and 211 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 00:05:23,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:23,965 INFO L93 Difference]: Finished difference Result 243 states and 390 transitions. [2021-10-13 00:05:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:05:23,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 24 [2021-10-13 00:05:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:23,967 INFO L225 Difference]: With dead ends: 243 [2021-10-13 00:05:23,967 INFO L226 Difference]: Without dead ends: 115 [2021-10-13 00:05:23,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-13 00:05:23,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2021-10-13 00:05:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.5892857142857142) internal successors, (178), 112 states have internal predecessors, (178), 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 00:05:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 178 transitions. [2021-10-13 00:05:23,976 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 178 transitions. Word has length 24 [2021-10-13 00:05:23,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:23,977 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 178 transitions. [2021-10-13 00:05:23,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 00:05:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 178 transitions. [2021-10-13 00:05:23,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 00:05:23,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:23,979 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:23,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:05:23,979 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:23,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1813922334, now seen corresponding path program 1 times [2021-10-13 00:05:23,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:23,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50234370] [2021-10-13 00:05:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:23,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:24,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:24,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50234370] [2021-10-13 00:05:24,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50234370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:24,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475629348] [2021-10-13 00:05:24,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:24,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:24,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:24,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:24,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:05:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:24,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:05:24,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:24,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475629348] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:24,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:24,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-13 00:05:24,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255151720] [2021-10-13 00:05:24,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:05:24,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:24,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:05:24,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:05:24,457 INFO L87 Difference]: Start difference. First operand 113 states and 178 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 00:05:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:24,647 INFO L93 Difference]: Finished difference Result 204 states and 323 transitions. [2021-10-13 00:05:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:05:24,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 26 [2021-10-13 00:05:24,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:24,649 INFO L225 Difference]: With dead ends: 204 [2021-10-13 00:05:24,649 INFO L226 Difference]: Without dead ends: 192 [2021-10-13 00:05:24,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:05:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-13 00:05:24,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 178. [2021-10-13 00:05:24,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.6384180790960452) internal successors, (290), 177 states have internal predecessors, (290), 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 00:05:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 290 transitions. [2021-10-13 00:05:24,668 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 290 transitions. Word has length 26 [2021-10-13 00:05:24,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:24,669 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 290 transitions. [2021-10-13 00:05:24,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 00:05:24,669 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 290 transitions. [2021-10-13 00:05:24,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 00:05:24,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:24,676 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:24,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:24,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:24,899 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:24,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:24,899 INFO L82 PathProgramCache]: Analyzing trace with hash 408461028, now seen corresponding path program 1 times [2021-10-13 00:05:24,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:24,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712541174] [2021-10-13 00:05:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:24,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:25,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:25,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712541174] [2021-10-13 00:05:25,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712541174] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:25,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514287301] [2021-10-13 00:05:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:25,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:25,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:25,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:25,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:05:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:25,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:05:25,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:25,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514287301] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:25,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:25,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-10-13 00:05:25,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31081437] [2021-10-13 00:05:25,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:05:25,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:25,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:05:25,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:05:25,563 INFO L87 Difference]: Start difference. First operand 178 states and 290 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 00:05:25,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:25,745 INFO L93 Difference]: Finished difference Result 387 states and 636 transitions. [2021-10-13 00:05:25,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:05:25,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 00:05:25,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:25,749 INFO L225 Difference]: With dead ends: 387 [2021-10-13 00:05:25,749 INFO L226 Difference]: Without dead ends: 230 [2021-10-13 00:05:25,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:05:25,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-13 00:05:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2021-10-13 00:05:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.6233183856502242) internal successors, (362), 223 states have internal predecessors, (362), 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 00:05:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 362 transitions. [2021-10-13 00:05:25,768 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 362 transitions. Word has length 27 [2021-10-13 00:05:25,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:25,769 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 362 transitions. [2021-10-13 00:05:25,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 00:05:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 362 transitions. [2021-10-13 00:05:25,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 00:05:25,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:25,772 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:25,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:25,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:25,996 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:25,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:25,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1176409765, now seen corresponding path program 1 times [2021-10-13 00:05:25,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:25,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293386954] [2021-10-13 00:05:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:25,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 00:05:26,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:26,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293386954] [2021-10-13 00:05:26,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293386954] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:05:26,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:05:26,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:05:26,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926573387] [2021-10-13 00:05:26,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:05:26,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:26,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:05:26,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:26,068 INFO L87 Difference]: Start difference. First operand 224 states and 362 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:26,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:26,102 INFO L93 Difference]: Finished difference Result 409 states and 661 transitions. [2021-10-13 00:05:26,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:05:26,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-13 00:05:26,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:26,107 INFO L225 Difference]: With dead ends: 409 [2021-10-13 00:05:26,107 INFO L226 Difference]: Without dead ends: 211 [2021-10-13 00:05:26,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:26,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-13 00:05:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2021-10-13 00:05:26,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5865384615384615) internal successors, (330), 208 states have internal predecessors, (330), 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 00:05:26,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 330 transitions. [2021-10-13 00:05:26,117 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 330 transitions. Word has length 28 [2021-10-13 00:05:26,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:26,118 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 330 transitions. [2021-10-13 00:05:26,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:26,123 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 330 transitions. [2021-10-13 00:05:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:05:26,127 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:26,128 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:26,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 00:05:26,129 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:26,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:26,130 INFO L82 PathProgramCache]: Analyzing trace with hash 989407566, now seen corresponding path program 1 times [2021-10-13 00:05:26,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:26,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015114568] [2021-10-13 00:05:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:26,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:26,215 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 00:05:26,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:26,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015114568] [2021-10-13 00:05:26,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015114568] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:05:26,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:05:26,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:05:26,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635156143] [2021-10-13 00:05:26,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:05:26,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:26,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:05:26,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:26,219 INFO L87 Difference]: Start difference. First operand 209 states and 330 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 00:05:26,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:26,253 INFO L93 Difference]: Finished difference Result 375 states and 600 transitions. [2021-10-13 00:05:26,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:05:26,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 36 [2021-10-13 00:05:26,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:26,257 INFO L225 Difference]: With dead ends: 375 [2021-10-13 00:05:26,257 INFO L226 Difference]: Without dead ends: 211 [2021-10-13 00:05:26,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:26,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-13 00:05:26,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2021-10-13 00:05:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5769230769230769) internal successors, (328), 208 states have internal predecessors, (328), 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 00:05:26,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 328 transitions. [2021-10-13 00:05:26,268 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 328 transitions. Word has length 36 [2021-10-13 00:05:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:26,268 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 328 transitions. [2021-10-13 00:05:26,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 00:05:26,269 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 328 transitions. [2021-10-13 00:05:26,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 00:05:26,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:26,269 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 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 00:05:26,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 00:05:26,270 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:26,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:26,270 INFO L82 PathProgramCache]: Analyzing trace with hash -936850633, now seen corresponding path program 1 times [2021-10-13 00:05:26,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:26,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753535958] [2021-10-13 00:05:26,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:26,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:26,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:26,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753535958] [2021-10-13 00:05:26,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753535958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:26,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240513840] [2021-10-13 00:05:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:26,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:26,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:26,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:26,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:05:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:26,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:05:26,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 00:05:26,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240513840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:26,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:26,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-10-13 00:05:26,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533091691] [2021-10-13 00:05:26,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:05:26,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:26,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:05:26,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:05:26,975 INFO L87 Difference]: Start difference. First operand 209 states and 328 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:27,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:27,305 INFO L93 Difference]: Finished difference Result 490 states and 766 transitions. [2021-10-13 00:05:27,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:05:27,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 00:05:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:27,308 INFO L225 Difference]: With dead ends: 490 [2021-10-13 00:05:27,308 INFO L226 Difference]: Without dead ends: 275 [2021-10-13 00:05:27,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 62.1ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:05:27,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-13 00:05:27,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 260. [2021-10-13 00:05:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.5675675675675675) internal successors, (406), 259 states have internal predecessors, (406), 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 00:05:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 406 transitions. [2021-10-13 00:05:27,321 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 406 transitions. Word has length 37 [2021-10-13 00:05:27,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:27,321 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 406 transitions. [2021-10-13 00:05:27,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:27,322 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 406 transitions. [2021-10-13 00:05:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 00:05:27,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:27,323 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2021-10-13 00:05:27,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:27,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 00:05:27,547 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:27,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:27,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1033847947, now seen corresponding path program 1 times [2021-10-13 00:05:27,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:27,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840198818] [2021-10-13 00:05:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:27,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 00:05:27,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:27,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840198818] [2021-10-13 00:05:27,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840198818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:27,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073713] [2021-10-13 00:05:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:27,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:27,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:27,658 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:27,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:05:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:27,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:05:27,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 00:05:27,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073713] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:27,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:27,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-13 00:05:27,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139179486] [2021-10-13 00:05:27,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:05:27,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:27,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:05:27,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:05:27,982 INFO L87 Difference]: Start difference. First operand 260 states and 406 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:28,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:28,095 INFO L93 Difference]: Finished difference Result 274 states and 418 transitions. [2021-10-13 00:05:28,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:05:28,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 00:05:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:28,099 INFO L225 Difference]: With dead ends: 274 [2021-10-13 00:05:28,099 INFO L226 Difference]: Without dead ends: 262 [2021-10-13 00:05:28,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:05:28,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-13 00:05:28,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2021-10-13 00:05:28,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.5212355212355213) internal successors, (394), 259 states have internal predecessors, (394), 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 00:05:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 394 transitions. [2021-10-13 00:05:28,122 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 394 transitions. Word has length 38 [2021-10-13 00:05:28,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:28,123 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 394 transitions. [2021-10-13 00:05:28,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:28,124 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 394 transitions. [2021-10-13 00:05:28,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 00:05:28,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:28,124 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2021-10-13 00:05:28,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:28,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:28,338 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:28,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:28,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1756734972, now seen corresponding path program 1 times [2021-10-13 00:05:28,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:28,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572779838] [2021-10-13 00:05:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:28,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:29,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:29,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572779838] [2021-10-13 00:05:29,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572779838] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:29,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642378046] [2021-10-13 00:05:29,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:29,051 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:29,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:29,052 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:29,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:05:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:29,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:05:29,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:29,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642378046] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:29,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:29,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2021-10-13 00:05:29,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230228704] [2021-10-13 00:05:29,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:05:29,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:29,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:05:29,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:05:29,678 INFO L87 Difference]: Start difference. First operand 260 states and 394 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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 00:05:30,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:30,075 INFO L93 Difference]: Finished difference Result 274 states and 404 transitions. [2021-10-13 00:05:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:05:30,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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 40 [2021-10-13 00:05:30,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:30,079 INFO L225 Difference]: With dead ends: 274 [2021-10-13 00:05:30,079 INFO L226 Difference]: Without dead ends: 272 [2021-10-13 00:05:30,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.5ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:05:30,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-13 00:05:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 261. [2021-10-13 00:05:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.5192307692307692) internal successors, (395), 260 states have internal predecessors, (395), 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 00:05:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 395 transitions. [2021-10-13 00:05:30,090 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 395 transitions. Word has length 40 [2021-10-13 00:05:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:30,092 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 395 transitions. [2021-10-13 00:05:30,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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 00:05:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 395 transitions. [2021-10-13 00:05:30,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-13 00:05:30,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:30,093 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 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 00:05:30,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:30,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:30,306 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:30,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:30,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1250552987, now seen corresponding path program 1 times [2021-10-13 00:05:30,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:30,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456528334] [2021-10-13 00:05:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:30,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 00:05:30,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:30,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456528334] [2021-10-13 00:05:30,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456528334] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:05:30,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:05:30,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:05:30,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664183475] [2021-10-13 00:05:30,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:05:30,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:30,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:05:30,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:30,355 INFO L87 Difference]: Start difference. First operand 261 states and 395 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:30,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:30,389 INFO L93 Difference]: Finished difference Result 461 states and 699 transitions. [2021-10-13 00:05:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:05:30,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-13 00:05:30,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:30,392 INFO L225 Difference]: With dead ends: 461 [2021-10-13 00:05:30,392 INFO L226 Difference]: Without dead ends: 245 [2021-10-13 00:05:30,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-13 00:05:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 243. [2021-10-13 00:05:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.487603305785124) internal successors, (360), 242 states have internal predecessors, (360), 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 00:05:30,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 360 transitions. [2021-10-13 00:05:30,403 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 360 transitions. Word has length 41 [2021-10-13 00:05:30,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:30,403 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 360 transitions. [2021-10-13 00:05:30,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:30,406 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 360 transitions. [2021-10-13 00:05:30,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 00:05:30,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:30,407 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 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] [2021-10-13 00:05:30,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 00:05:30,408 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:30,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:30,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1789960589, now seen corresponding path program 1 times [2021-10-13 00:05:30,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:30,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441396428] [2021-10-13 00:05:30,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:30,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-13 00:05:30,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:30,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441396428] [2021-10-13 00:05:30,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441396428] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:05:30,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:05:30,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:05:30,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18513627] [2021-10-13 00:05:30,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:05:30,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:30,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:05:30,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:30,508 INFO L87 Difference]: Start difference. First operand 243 states and 360 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:30,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:30,540 INFO L93 Difference]: Finished difference Result 333 states and 494 transitions. [2021-10-13 00:05:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:05:30,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-13 00:05:30,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:30,544 INFO L225 Difference]: With dead ends: 333 [2021-10-13 00:05:30,544 INFO L226 Difference]: Without dead ends: 155 [2021-10-13 00:05:30,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-13 00:05:30,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2021-10-13 00:05:30,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.4407894736842106) internal successors, (219), 152 states have internal predecessors, (219), 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 00:05:30,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 219 transitions. [2021-10-13 00:05:30,551 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 219 transitions. Word has length 51 [2021-10-13 00:05:30,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:30,551 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 219 transitions. [2021-10-13 00:05:30,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:30,552 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 219 transitions. [2021-10-13 00:05:30,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 00:05:30,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:30,553 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 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] [2021-10-13 00:05:30,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 00:05:30,553 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:30,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:30,554 INFO L82 PathProgramCache]: Analyzing trace with hash -608000180, now seen corresponding path program 1 times [2021-10-13 00:05:30,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:30,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960610534] [2021-10-13 00:05:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:30,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 00:05:30,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:30,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960610534] [2021-10-13 00:05:30,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960610534] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:30,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473066435] [2021-10-13 00:05:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:30,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:30,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:30,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:30,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:05:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:30,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:05:30,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 00:05:31,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473066435] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:31,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:31,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-13 00:05:31,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632091992] [2021-10-13 00:05:31,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:05:31,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:31,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:05:31,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:05:31,137 INFO L87 Difference]: Start difference. First operand 153 states and 219 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:05:31,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:31,213 INFO L93 Difference]: Finished difference Result 286 states and 418 transitions. [2021-10-13 00:05:31,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:05:31,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 52 [2021-10-13 00:05:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:31,216 INFO L225 Difference]: With dead ends: 286 [2021-10-13 00:05:31,216 INFO L226 Difference]: Without dead ends: 194 [2021-10-13 00:05:31,218 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:05:31,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-13 00:05:31,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2021-10-13 00:05:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.436842105263158) internal successors, (273), 190 states have internal predecessors, (273), 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 00:05:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 273 transitions. [2021-10-13 00:05:31,226 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 273 transitions. Word has length 52 [2021-10-13 00:05:31,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:31,226 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 273 transitions. [2021-10-13 00:05:31,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:05:31,227 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 273 transitions. [2021-10-13 00:05:31,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-13 00:05:31,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:31,227 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 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] [2021-10-13 00:05:31,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:31,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 00:05:31,442 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:31,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:31,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1903289774, now seen corresponding path program 1 times [2021-10-13 00:05:31,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:31,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543172316] [2021-10-13 00:05:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:31,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:31,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:31,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543172316] [2021-10-13 00:05:31,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543172316] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:31,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758157134] [2021-10-13 00:05:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:31,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:31,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:31,662 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:31,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:05:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:31,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:05:31,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:32,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758157134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:32,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:32,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-10-13 00:05:32,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936877543] [2021-10-13 00:05:32,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:05:32,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:32,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:05:32,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:05:32,438 INFO L87 Difference]: Start difference. First operand 191 states and 273 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 00:05:32,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:32,558 INFO L93 Difference]: Finished difference Result 193 states and 274 transitions. [2021-10-13 00:05:32,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:05:32,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 56 [2021-10-13 00:05:32,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:32,561 INFO L225 Difference]: With dead ends: 193 [2021-10-13 00:05:32,561 INFO L226 Difference]: Without dead ends: 191 [2021-10-13 00:05:32,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 63.7ms TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:05:32,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-13 00:05:32,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-10-13 00:05:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.431578947368421) internal successors, (272), 190 states have internal predecessors, (272), 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 00:05:32,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 272 transitions. [2021-10-13 00:05:32,569 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 272 transitions. Word has length 56 [2021-10-13 00:05:32,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:32,570 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 272 transitions. [2021-10-13 00:05:32,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 00:05:32,570 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 272 transitions. [2021-10-13 00:05:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 00:05:32,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:32,571 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 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] [2021-10-13 00:05:32,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:32,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 00:05:32,785 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:32,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:32,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1029731011, now seen corresponding path program 1 times [2021-10-13 00:05:32,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:32,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125292622] [2021-10-13 00:05:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:32,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:33,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:33,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125292622] [2021-10-13 00:05:33,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125292622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:33,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058424357] [2021-10-13 00:05:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:33,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:33,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:33,174 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:33,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:05:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:33,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:05:33,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:34,152 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:34,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058424357] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:34,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:34,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-10-13 00:05:34,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773219159] [2021-10-13 00:05:34,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:05:34,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:34,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:05:34,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:05:34,155 INFO L87 Difference]: Start difference. First operand 191 states and 272 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 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 00:05:34,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:34,371 INFO L93 Difference]: Finished difference Result 197 states and 277 transitions. [2021-10-13 00:05:34,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:05:34,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 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 63 [2021-10-13 00:05:34,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:34,373 INFO L225 Difference]: With dead ends: 197 [2021-10-13 00:05:34,373 INFO L226 Difference]: Without dead ends: 195 [2021-10-13 00:05:34,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 89.4ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:05:34,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-13 00:05:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2021-10-13 00:05:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.4293193717277486) internal successors, (273), 191 states have internal predecessors, (273), 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 00:05:34,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 273 transitions. [2021-10-13 00:05:34,380 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 273 transitions. Word has length 63 [2021-10-13 00:05:34,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:34,380 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 273 transitions. [2021-10-13 00:05:34,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 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 00:05:34,381 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 273 transitions. [2021-10-13 00:05:34,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-13 00:05:34,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:34,381 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 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 00:05:34,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:34,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 00:05:34,606 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:34,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:34,607 INFO L82 PathProgramCache]: Analyzing trace with hash 531523283, now seen corresponding path program 1 times [2021-10-13 00:05:34,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:34,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683699473] [2021-10-13 00:05:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:34,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:34,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:34,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683699473] [2021-10-13 00:05:34,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683699473] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:34,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941533793] [2021-10-13 00:05:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:34,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:34,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:34,806 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:34,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:05:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:35,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 00:05:35,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:35,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941533793] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:35,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:35,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-10-13 00:05:35,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429873265] [2021-10-13 00:05:35,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:05:35,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:35,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:05:35,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:05:35,800 INFO L87 Difference]: Start difference. First operand 192 states and 273 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:35,969 INFO L93 Difference]: Finished difference Result 301 states and 437 transitions. [2021-10-13 00:05:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:05:35,970 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-10-13 00:05:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:35,972 INFO L225 Difference]: With dead ends: 301 [2021-10-13 00:05:35,972 INFO L226 Difference]: Without dead ends: 211 [2021-10-13 00:05:35,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 74.8ms TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:05:35,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-13 00:05:35,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2021-10-13 00:05:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.4238095238095239) internal successors, (299), 210 states have internal predecessors, (299), 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 00:05:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 299 transitions. [2021-10-13 00:05:35,980 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 299 transitions. Word has length 73 [2021-10-13 00:05:35,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:35,980 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 299 transitions. [2021-10-13 00:05:35,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:35,981 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 299 transitions. [2021-10-13 00:05:35,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-13 00:05:35,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:35,989 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 3, 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 00:05:36,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:36,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 00:05:36,213 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:36,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:36,214 INFO L82 PathProgramCache]: Analyzing trace with hash 833926246, now seen corresponding path program 1 times [2021-10-13 00:05:36,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:36,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387172293] [2021-10-13 00:05:36,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:36,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 00:05:36,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:36,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387172293] [2021-10-13 00:05:36,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387172293] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:36,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318099924] [2021-10-13 00:05:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:36,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:36,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:36,458 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:36,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:05:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:36,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 00:05:36,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 21 proven. 99 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 00:05:37,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318099924] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:37,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:37,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-10-13 00:05:37,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902223074] [2021-10-13 00:05:37,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:05:37,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:37,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:05:37,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:05:37,401 INFO L87 Difference]: Start difference. First operand 211 states and 299 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 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 00:05:37,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:37,692 INFO L93 Difference]: Finished difference Result 329 states and 470 transitions. [2021-10-13 00:05:37,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:05:37,693 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 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 83 [2021-10-13 00:05:37,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:37,695 INFO L225 Difference]: With dead ends: 329 [2021-10-13 00:05:37,695 INFO L226 Difference]: Without dead ends: 239 [2021-10-13 00:05:37,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:05:37,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-10-13 00:05:37,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 230. [2021-10-13 00:05:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.4192139737991267) internal successors, (325), 229 states have internal predecessors, (325), 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 00:05:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 325 transitions. [2021-10-13 00:05:37,704 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 325 transitions. Word has length 83 [2021-10-13 00:05:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:37,705 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 325 transitions. [2021-10-13 00:05:37,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 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 00:05:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 325 transitions. [2021-10-13 00:05:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-13 00:05:37,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:37,706 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 3, 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] [2021-10-13 00:05:37,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:37,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:37,920 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:37,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:37,920 INFO L82 PathProgramCache]: Analyzing trace with hash -112559507, now seen corresponding path program 1 times [2021-10-13 00:05:37,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:37,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147711007] [2021-10-13 00:05:37,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:37,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:38,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:38,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147711007] [2021-10-13 00:05:38,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147711007] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:38,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768239641] [2021-10-13 00:05:38,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:38,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:38,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:38,291 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:38,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 00:05:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:38,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 00:05:38,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:39,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768239641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:39,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:39,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 00:05:39,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158577407] [2021-10-13 00:05:39,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:05:39,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:39,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:05:39,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:05:39,739 INFO L87 Difference]: Start difference. First operand 230 states and 325 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:39,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:39,892 INFO L93 Difference]: Finished difference Result 233 states and 328 transitions. [2021-10-13 00:05:39,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:05:39,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-10-13 00:05:39,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:39,894 INFO L225 Difference]: With dead ends: 233 [2021-10-13 00:05:39,894 INFO L226 Difference]: Without dead ends: 231 [2021-10-13 00:05:39,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:05:39,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-10-13 00:05:39,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-10-13 00:05:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4173913043478261) internal successors, (326), 230 states have internal predecessors, (326), 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 00:05:39,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2021-10-13 00:05:39,902 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 86 [2021-10-13 00:05:39,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:39,903 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2021-10-13 00:05:39,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:05:39,903 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2021-10-13 00:05:39,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-13 00:05:39,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:39,905 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 6, 6, 4, 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] [2021-10-13 00:05:39,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:40,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:40,122 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:40,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:40,122 INFO L82 PathProgramCache]: Analyzing trace with hash -141600195, now seen corresponding path program 1 times [2021-10-13 00:05:40,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:40,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801906189] [2021-10-13 00:05:40,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:40,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 24 proven. 148 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 00:05:40,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:40,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801906189] [2021-10-13 00:05:40,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801906189] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:40,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940682965] [2021-10-13 00:05:40,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:40,251 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:40,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:40,258 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:40,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 00:05:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:40,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:05:40,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 24 proven. 148 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 00:05:41,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940682965] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:41,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:41,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-13 00:05:41,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187028071] [2021-10-13 00:05:41,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:05:41,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:41,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:05:41,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:05:41,339 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 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 00:05:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:41,483 INFO L93 Difference]: Finished difference Result 364 states and 525 transitions. [2021-10-13 00:05:41,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:05:41,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 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 98 [2021-10-13 00:05:41,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:41,486 INFO L225 Difference]: With dead ends: 364 [2021-10-13 00:05:41,487 INFO L226 Difference]: Without dead ends: 272 [2021-10-13 00:05:41,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:05:41,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-13 00:05:41,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 269. [2021-10-13 00:05:41,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.4179104477611941) internal successors, (380), 268 states have internal predecessors, (380), 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 00:05:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 380 transitions. [2021-10-13 00:05:41,500 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 380 transitions. Word has length 98 [2021-10-13 00:05:41,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:41,500 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 380 transitions. [2021-10-13 00:05:41,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 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 00:05:41,500 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 380 transitions. [2021-10-13 00:05:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-13 00:05:41,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:41,502 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 6, 6, 4, 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] [2021-10-13 00:05:41,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:41,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:41,718 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:41,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:41,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1596344289, now seen corresponding path program 1 times [2021-10-13 00:05:41,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:41,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183143060] [2021-10-13 00:05:41,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:41,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:41,964 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 24 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:41,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:41,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183143060] [2021-10-13 00:05:41,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183143060] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:41,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893473323] [2021-10-13 00:05:41,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:41,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:41,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:41,966 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:41,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 00:05:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:42,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 00:05:42,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 24 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:43,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893473323] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:43,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:43,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-13 00:05:43,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341551699] [2021-10-13 00:05:43,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:05:43,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:43,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:05:43,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:05:43,513 INFO L87 Difference]: Start difference. First operand 269 states and 380 transitions. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 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 00:05:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:43,693 INFO L93 Difference]: Finished difference Result 271 states and 381 transitions. [2021-10-13 00:05:43,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:05:43,696 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 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 102 [2021-10-13 00:05:43,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:43,698 INFO L225 Difference]: With dead ends: 271 [2021-10-13 00:05:43,698 INFO L226 Difference]: Without dead ends: 269 [2021-10-13 00:05:43,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:05:43,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-10-13 00:05:43,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2021-10-13 00:05:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.414179104477612) internal successors, (379), 268 states have internal predecessors, (379), 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 00:05:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 379 transitions. [2021-10-13 00:05:43,709 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 379 transitions. Word has length 102 [2021-10-13 00:05:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:43,709 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 379 transitions. [2021-10-13 00:05:43,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 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 00:05:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 379 transitions. [2021-10-13 00:05:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-13 00:05:43,711 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:43,711 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:43,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:43,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:43,911 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:43,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:43,912 INFO L82 PathProgramCache]: Analyzing trace with hash -850579662, now seen corresponding path program 2 times [2021-10-13 00:05:43,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:43,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199566123] [2021-10-13 00:05:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:43,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 27 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:44,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:44,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199566123] [2021-10-13 00:05:44,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199566123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:44,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778885557] [2021-10-13 00:05:44,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:05:44,462 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:44,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:44,464 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:44,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 00:05:45,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:05:45,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:05:45,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 00:05:45,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 27 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:46,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778885557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:46,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:46,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2021-10-13 00:05:46,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18127472] [2021-10-13 00:05:46,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:05:46,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:46,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:05:46,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:05:46,509 INFO L87 Difference]: Start difference. First operand 269 states and 379 transitions. Second operand has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 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 00:05:46,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:46,818 INFO L93 Difference]: Finished difference Result 276 states and 385 transitions. [2021-10-13 00:05:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:05:46,819 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 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 109 [2021-10-13 00:05:46,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:46,821 INFO L225 Difference]: With dead ends: 276 [2021-10-13 00:05:46,821 INFO L226 Difference]: Without dead ends: 274 [2021-10-13 00:05:46,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 219.8ms TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:05:46,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-10-13 00:05:46,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 270. [2021-10-13 00:05:46,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.412639405204461) internal successors, (380), 269 states have internal predecessors, (380), 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 00:05:46,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 380 transitions. [2021-10-13 00:05:46,830 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 380 transitions. Word has length 109 [2021-10-13 00:05:46,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:46,831 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 380 transitions. [2021-10-13 00:05:46,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 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 00:05:46,831 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 380 transitions. [2021-10-13 00:05:46,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-13 00:05:46,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:46,833 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 7, 7, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:46,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:47,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-13 00:05:47,046 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:47,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:47,047 INFO L82 PathProgramCache]: Analyzing trace with hash 990487682, now seen corresponding path program 2 times [2021-10-13 00:05:47,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:47,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454305796] [2021-10-13 00:05:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:47,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 30 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:47,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:47,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454305796] [2021-10-13 00:05:47,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454305796] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:47,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718980038] [2021-10-13 00:05:47,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:05:47,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:47,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:47,470 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:47,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 00:05:48,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:05:48,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:05:48,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 00:05:48,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 30 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:49,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718980038] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:49,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:49,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-10-13 00:05:49,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748415371] [2021-10-13 00:05:49,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:05:49,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:49,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:05:49,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:05:49,028 INFO L87 Difference]: Start difference. First operand 270 states and 380 transitions. Second operand has 22 states, 22 states have (on average 10.090909090909092) internal successors, (222), 22 states have internal predecessors, (222), 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 00:05:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:49,330 INFO L93 Difference]: Finished difference Result 379 states and 544 transitions. [2021-10-13 00:05:49,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:05:49,330 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.090909090909092) internal successors, (222), 22 states have internal predecessors, (222), 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 119 [2021-10-13 00:05:49,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:49,332 INFO L225 Difference]: With dead ends: 379 [2021-10-13 00:05:49,332 INFO L226 Difference]: Without dead ends: 289 [2021-10-13 00:05:49,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 225.0ms TimeCoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:05:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-13 00:05:49,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-10-13 00:05:49,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.4097222222222223) internal successors, (406), 288 states have internal predecessors, (406), 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 00:05:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 406 transitions. [2021-10-13 00:05:49,342 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 406 transitions. Word has length 119 [2021-10-13 00:05:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:49,343 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 406 transitions. [2021-10-13 00:05:49,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.090909090909092) internal successors, (222), 22 states have internal predecessors, (222), 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 00:05:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 406 transitions. [2021-10-13 00:05:49,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-13 00:05:49,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:49,345 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 8, 8, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:49,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:49,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-13 00:05:49,566 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:49,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:49,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1581114197, now seen corresponding path program 2 times [2021-10-13 00:05:49,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:49,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608948029] [2021-10-13 00:05:49,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:49,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 33 proven. 304 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-13 00:05:49,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:49,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608948029] [2021-10-13 00:05:49,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608948029] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:49,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161373546] [2021-10-13 00:05:49,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:05:49,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:49,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:49,826 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:49,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 00:05:50,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:05:50,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:05:50,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 00:05:50,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 33 proven. 298 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-13 00:05:51,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161373546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:51,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:51,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-10-13 00:05:51,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966134487] [2021-10-13 00:05:51,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:05:51,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:51,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:05:51,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:05:51,328 INFO L87 Difference]: Start difference. First operand 289 states and 406 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 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 00:05:51,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:51,560 INFO L93 Difference]: Finished difference Result 406 states and 576 transitions. [2021-10-13 00:05:51,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:05:51,560 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 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 129 [2021-10-13 00:05:51,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:51,562 INFO L225 Difference]: With dead ends: 406 [2021-10-13 00:05:51,562 INFO L226 Difference]: Without dead ends: 316 [2021-10-13 00:05:51,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:05:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-13 00:05:51,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 308. [2021-10-13 00:05:51,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.4071661237785016) internal successors, (432), 307 states have internal predecessors, (432), 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 00:05:51,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 432 transitions. [2021-10-13 00:05:51,572 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 432 transitions. Word has length 129 [2021-10-13 00:05:51,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:51,573 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 432 transitions. [2021-10-13 00:05:51,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 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 00:05:51,573 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 432 transitions. [2021-10-13 00:05:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-13 00:05:51,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:51,575 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 8, 8, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:51,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:51,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-13 00:05:51,800 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:51,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:51,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1451806434, now seen corresponding path program 2 times [2021-10-13 00:05:51,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:51,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278056112] [2021-10-13 00:05:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:51,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 33 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:52,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:52,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278056112] [2021-10-13 00:05:52,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278056112] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:52,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637604005] [2021-10-13 00:05:52,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:05:52,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:52,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:52,526 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:52,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 00:05:53,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:05:53,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:05:53,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 00:05:53,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 33 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:55,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637604005] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:55,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:55,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-10-13 00:05:55,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633782025] [2021-10-13 00:05:55,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:05:55,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:55,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:05:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:05:55,061 INFO L87 Difference]: Start difference. First operand 308 states and 432 transitions. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 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 00:05:55,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:55,354 INFO L93 Difference]: Finished difference Result 311 states and 435 transitions. [2021-10-13 00:05:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:05:55,355 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 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 132 [2021-10-13 00:05:55,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:55,357 INFO L225 Difference]: With dead ends: 311 [2021-10-13 00:05:55,357 INFO L226 Difference]: Without dead ends: 309 [2021-10-13 00:05:55,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 159.0ms TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:05:55,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-10-13 00:05:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-10-13 00:05:55,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.405844155844156) internal successors, (433), 308 states have internal predecessors, (433), 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 00:05:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 433 transitions. [2021-10-13 00:05:55,369 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 433 transitions. Word has length 132 [2021-10-13 00:05:55,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:55,369 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 433 transitions. [2021-10-13 00:05:55,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 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 00:05:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 433 transitions. [2021-10-13 00:05:55,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-10-13 00:05:55,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:55,372 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 9, 9, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:55,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:55,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-13 00:05:55,586 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:55,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:55,587 INFO L82 PathProgramCache]: Analyzing trace with hash -722301074, now seen corresponding path program 2 times [2021-10-13 00:05:55,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:55,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985056188] [2021-10-13 00:05:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:55,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 36 proven. 379 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-13 00:05:55,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:55,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985056188] [2021-10-13 00:05:55,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985056188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:55,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860589774] [2021-10-13 00:05:55,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:05:55,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:55,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:55,821 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:55,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 00:05:57,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:05:57,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:05:57,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 00:05:57,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:05:58,139 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 36 proven. 379 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-13 00:05:58,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860589774] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:58,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:05:58,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 00:05:58,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011679794] [2021-10-13 00:05:58,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:05:58,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:58,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:05:58,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:05:58,141 INFO L87 Difference]: Start difference. First operand 309 states and 433 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 00:05:58,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:58,323 INFO L93 Difference]: Finished difference Result 442 states and 632 transitions. [2021-10-13 00:05:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:05:58,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 144 [2021-10-13 00:05:58,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:58,326 INFO L225 Difference]: With dead ends: 442 [2021-10-13 00:05:58,326 INFO L226 Difference]: Without dead ends: 350 [2021-10-13 00:05:58,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:05:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-10-13 00:05:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 347. [2021-10-13 00:05:58,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.407514450867052) internal successors, (487), 346 states have internal predecessors, (487), 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 00:05:58,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 487 transitions. [2021-10-13 00:05:58,343 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 487 transitions. Word has length 144 [2021-10-13 00:05:58,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:58,343 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 487 transitions. [2021-10-13 00:05:58,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 00:05:58,344 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 487 transitions. [2021-10-13 00:05:58,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-13 00:05:58,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:58,346 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 9, 9, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:58,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:05:58,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:58,559 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:05:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:58,559 INFO L82 PathProgramCache]: Analyzing trace with hash 38595792, now seen corresponding path program 2 times [2021-10-13 00:05:58,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:58,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985313914] [2021-10-13 00:05:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:58,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 36 proven. 417 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:58,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:58,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985313914] [2021-10-13 00:05:58,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985313914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:05:58,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016325] [2021-10-13 00:05:58,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:05:58,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:05:58,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:58,950 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:05:58,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 00:06:00,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:06:00,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:06:00,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 00:06:00,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 36 proven. 417 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:01,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016325] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:01,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:06:01,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-10-13 00:06:01,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794119975] [2021-10-13 00:06:01,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 00:06:01,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:01,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 00:06:01,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:06:01,715 INFO L87 Difference]: Start difference. First operand 347 states and 487 transitions. Second operand has 25 states, 25 states have (on average 11.2) internal successors, (280), 25 states have internal predecessors, (280), 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 00:06:02,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:02,021 INFO L93 Difference]: Finished difference Result 349 states and 488 transitions. [2021-10-13 00:06:02,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:06:02,022 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.2) internal successors, (280), 25 states have internal predecessors, (280), 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 148 [2021-10-13 00:06:02,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:02,023 INFO L225 Difference]: With dead ends: 349 [2021-10-13 00:06:02,023 INFO L226 Difference]: Without dead ends: 347 [2021-10-13 00:06:02,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 307.6ms TimeCoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:06:02,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-10-13 00:06:02,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2021-10-13 00:06:02,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.4046242774566473) internal successors, (486), 346 states have internal predecessors, (486), 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 00:06:02,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 486 transitions. [2021-10-13 00:06:02,035 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 486 transitions. Word has length 148 [2021-10-13 00:06:02,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:02,035 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 486 transitions. [2021-10-13 00:06:02,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.2) internal successors, (280), 25 states have internal predecessors, (280), 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 00:06:02,036 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 486 transitions. [2021-10-13 00:06:02,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-10-13 00:06:02,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:02,037 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 9, 9, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:02,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:06:02,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 00:06:02,258 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:06:02,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:02,259 INFO L82 PathProgramCache]: Analyzing trace with hash 71795041, now seen corresponding path program 3 times [2021-10-13 00:06:02,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:02,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010611115] [2021-10-13 00:06:02,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:02,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 39 proven. 474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:02,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:02,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010611115] [2021-10-13 00:06:02,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010611115] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:02,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227634183] [2021-10-13 00:06:02,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:06:02,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:02,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:02,810 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:06:02,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 00:06:04,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 00:06:04,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:06:04,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:06:04,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 248 proven. 32 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-10-13 00:06:04,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227634183] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:04,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:06:04,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 19 [2021-10-13 00:06:04,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703632244] [2021-10-13 00:06:04,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:06:04,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:04,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:06:04,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:06:04,656 INFO L87 Difference]: Start difference. First operand 347 states and 486 transitions. Second operand has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 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 00:06:05,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:05,348 INFO L93 Difference]: Finished difference Result 544 states and 765 transitions. [2021-10-13 00:06:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 00:06:05,350 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 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 155 [2021-10-13 00:06:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:05,353 INFO L225 Difference]: With dead ends: 544 [2021-10-13 00:06:05,353 INFO L226 Difference]: Without dead ends: 448 [2021-10-13 00:06:05,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 434.7ms TimeCoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2021-10-13 00:06:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-13 00:06:05,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 425. [2021-10-13 00:06:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.4103773584905661) internal successors, (598), 424 states have internal predecessors, (598), 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 00:06:05,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 598 transitions. [2021-10-13 00:06:05,367 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 598 transitions. Word has length 155 [2021-10-13 00:06:05,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:05,367 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 598 transitions. [2021-10-13 00:06:05,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 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 00:06:05,368 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 598 transitions. [2021-10-13 00:06:05,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-10-13 00:06:05,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:05,369 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 10, 10, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:05,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:06:05,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-13 00:06:05,582 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:06:05,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:05,583 INFO L82 PathProgramCache]: Analyzing trace with hash 808412595, now seen corresponding path program 1 times [2021-10-13 00:06:05,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:05,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882933148] [2021-10-13 00:06:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:05,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 98 proven. 470 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 00:06:05,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:05,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882933148] [2021-10-13 00:06:05,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882933148] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:05,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031036090] [2021-10-13 00:06:05,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:05,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:05,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:05,786 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:06:05,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 00:06:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:07,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:06:07,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 98 proven. 470 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 00:06:07,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031036090] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:07,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:06:07,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-13 00:06:07,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244554427] [2021-10-13 00:06:07,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:06:07,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:07,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:06:07,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:06:07,721 INFO L87 Difference]: Start difference. First operand 425 states and 598 transitions. Second operand has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 11 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:06:07,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:07,904 INFO L93 Difference]: Finished difference Result 927 states and 1318 transitions. [2021-10-13 00:06:07,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:06:07,905 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 11 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-10-13 00:06:07,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:07,910 INFO L225 Difference]: With dead ends: 927 [2021-10-13 00:06:07,910 INFO L226 Difference]: Without dead ends: 760 [2021-10-13 00:06:07,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 42.0ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:06:07,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-10-13 00:06:07,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 719. [2021-10-13 00:06:07,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 718 states have (on average 1.4080779944289694) internal successors, (1011), 718 states have internal predecessors, (1011), 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 00:06:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1011 transitions. [2021-10-13 00:06:07,938 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1011 transitions. Word has length 165 [2021-10-13 00:06:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:07,938 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1011 transitions. [2021-10-13 00:06:07,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 11 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:06:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1011 transitions. [2021-10-13 00:06:07,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-13 00:06:07,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:07,947 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 11, 11, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:07,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:06:08,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:08,162 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:06:08,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:08,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1110215403, now seen corresponding path program 1 times [2021-10-13 00:06:08,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:08,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974992535] [2021-10-13 00:06:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:08,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 45 proven. 616 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-13 00:06:08,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:08,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974992535] [2021-10-13 00:06:08,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974992535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:08,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206604327] [2021-10-13 00:06:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:08,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:08,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:08,802 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:06:08,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 00:06:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:10,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 00:06:10,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 656 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-13 00:06:10,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206604327] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:06:10,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:06:10,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-10-13 00:06:10,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198699207] [2021-10-13 00:06:10,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:06:10,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:10,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:06:10,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:06:10,828 INFO L87 Difference]: Start difference. First operand 719 states and 1011 transitions. Second operand has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 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 00:06:10,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:10,962 INFO L93 Difference]: Finished difference Result 860 states and 1208 transitions. [2021-10-13 00:06:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:06:10,962 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 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 177 [2021-10-13 00:06:10,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:10,968 INFO L225 Difference]: With dead ends: 860 [2021-10-13 00:06:10,969 INFO L226 Difference]: Without dead ends: 856 [2021-10-13 00:06:10,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:06:10,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-10-13 00:06:10,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 852. [2021-10-13 00:06:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.4101057579318448) internal successors, (1200), 851 states have internal predecessors, (1200), 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 00:06:11,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1200 transitions. [2021-10-13 00:06:11,001 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1200 transitions. Word has length 177 [2021-10-13 00:06:11,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:11,003 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1200 transitions. [2021-10-13 00:06:11,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 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 00:06:11,003 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1200 transitions. [2021-10-13 00:06:11,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-13 00:06:11,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:11,006 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 11, 11, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:11,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:06:11,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:11,230 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:06:11,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:11,230 INFO L82 PathProgramCache]: Analyzing trace with hash -45491697, now seen corresponding path program 3 times [2021-10-13 00:06:11,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:11,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011939981] [2021-10-13 00:06:11,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:11,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 45 proven. 656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:11,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:11,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011939981] [2021-10-13 00:06:11,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011939981] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:11,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984115007] [2021-10-13 00:06:11,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:06:11,878 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:11,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:11,895 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:06:11,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 00:06:13,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-10-13 00:06:13,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:06:13,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 00:06:13,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 554 proven. 137 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 00:06:14,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984115007] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:14,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:06:14,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-10-13 00:06:14,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785298512] [2021-10-13 00:06:14,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-13 00:06:14,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:14,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-13 00:06:14,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2021-10-13 00:06:14,588 INFO L87 Difference]: Start difference. First operand 852 states and 1200 transitions. Second operand has 32 states, 32 states have (on average 10.59375) internal successors, (339), 32 states have internal predecessors, (339), 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 00:06:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:15,282 INFO L93 Difference]: Finished difference Result 867 states and 1213 transitions. [2021-10-13 00:06:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 00:06:15,294 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.59375) internal successors, (339), 32 states have internal predecessors, (339), 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 178 [2021-10-13 00:06:15,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:15,299 INFO L225 Difference]: With dead ends: 867 [2021-10-13 00:06:15,300 INFO L226 Difference]: Without dead ends: 865 [2021-10-13 00:06:15,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 758.2ms TimeCoverageRelationStatistics Valid=310, Invalid=1496, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 00:06:15,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-10-13 00:06:15,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 852. [2021-10-13 00:06:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.408930669800235) internal successors, (1199), 851 states have internal predecessors, (1199), 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 00:06:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1199 transitions. [2021-10-13 00:06:15,325 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1199 transitions. Word has length 178 [2021-10-13 00:06:15,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:15,326 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1199 transitions. [2021-10-13 00:06:15,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.59375) internal successors, (339), 32 states have internal predecessors, (339), 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 00:06:15,326 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1199 transitions. [2021-10-13 00:06:15,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-10-13 00:06:15,327 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:15,328 INFO L512 BasicCegarLoop]: trace histogram [17, 16, 16, 12, 12, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:15,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 00:06:15,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-13 00:06:15,542 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:06:15,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:15,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1121314851, now seen corresponding path program 1 times [2021-10-13 00:06:15,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:15,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473109608] [2021-10-13 00:06:15,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:15,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 125 proven. 650 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-13 00:06:15,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:15,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473109608] [2021-10-13 00:06:15,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473109608] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:15,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763058672] [2021-10-13 00:06:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:15,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:15,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:15,734 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:06:15,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 00:06:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:17,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:06:17,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 125 proven. 650 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-13 00:06:17,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763058672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:17,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:06:17,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-13 00:06:17,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927141975] [2021-10-13 00:06:17,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:06:17,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:17,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:06:17,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:06:17,877 INFO L87 Difference]: Start difference. First operand 852 states and 1199 transitions. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 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 00:06:18,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:18,042 INFO L93 Difference]: Finished difference Result 1435 states and 2015 transitions. [2021-10-13 00:06:18,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:06:18,043 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 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 193 [2021-10-13 00:06:18,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:18,048 INFO L225 Difference]: With dead ends: 1435 [2021-10-13 00:06:18,048 INFO L226 Difference]: Without dead ends: 959 [2021-10-13 00:06:18,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:06:18,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-10-13 00:06:18,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 930. [2021-10-13 00:06:18,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 929 states have (on average 1.411194833153929) internal successors, (1311), 929 states have internal predecessors, (1311), 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 00:06:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1311 transitions. [2021-10-13 00:06:18,081 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1311 transitions. Word has length 193 [2021-10-13 00:06:18,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:18,081 INFO L470 AbstractCegarLoop]: Abstraction has 930 states and 1311 transitions. [2021-10-13 00:06:18,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 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 00:06:18,082 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1311 transitions. [2021-10-13 00:06:18,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-10-13 00:06:18,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:18,083 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 16, 12, 12, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:18,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 00:06:18,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-13 00:06:18,290 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:06:18,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:18,291 INFO L82 PathProgramCache]: Analyzing trace with hash -608595007, now seen corresponding path program 3 times [2021-10-13 00:06:18,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:18,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245032246] [2021-10-13 00:06:18,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:18,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 48 proven. 772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:18,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:18,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245032246] [2021-10-13 00:06:18,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245032246] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:18,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637901812] [2021-10-13 00:06:18,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:06:18,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:18,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:18,848 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:06:18,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 00:06:20,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-10-13 00:06:20,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:06:20,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-13 00:06:20,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 478 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:06:22,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637901812] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:22,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:06:22,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2021-10-13 00:06:22,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029765531] [2021-10-13 00:06:22,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-13 00:06:22,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:22,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-13 00:06:22,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 00:06:22,145 INFO L87 Difference]: Start difference. First operand 930 states and 1311 transitions. Second operand has 35 states, 35 states have (on average 10.82857142857143) internal successors, (379), 35 states have internal predecessors, (379), 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 00:06:22,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:22,777 INFO L93 Difference]: Finished difference Result 934 states and 1313 transitions. [2021-10-13 00:06:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 00:06:22,778 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 10.82857142857143) internal successors, (379), 35 states have internal predecessors, (379), 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 194 [2021-10-13 00:06:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:22,785 INFO L225 Difference]: With dead ends: 934 [2021-10-13 00:06:22,785 INFO L226 Difference]: Without dead ends: 932 [2021-10-13 00:06:22,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 642.9ms TimeCoverageRelationStatistics Valid=239, Invalid=1243, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 00:06:22,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-10-13 00:06:22,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 930. [2021-10-13 00:06:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 929 states have (on average 1.4090419806243273) internal successors, (1309), 929 states have internal predecessors, (1309), 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 00:06:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1309 transitions. [2021-10-13 00:06:22,820 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1309 transitions. Word has length 194 [2021-10-13 00:06:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:22,821 INFO L470 AbstractCegarLoop]: Abstraction has 930 states and 1309 transitions. [2021-10-13 00:06:22,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.82857142857143) internal successors, (379), 35 states have internal predecessors, (379), 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 00:06:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1309 transitions. [2021-10-13 00:06:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-10-13 00:06:22,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:22,824 INFO L512 BasicCegarLoop]: trace histogram [19, 18, 18, 13, 13, 8, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:22,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 00:06:23,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-13 00:06:23,050 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:06:23,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:23,051 INFO L82 PathProgramCache]: Analyzing trace with hash -2110169374, now seen corresponding path program 2 times [2021-10-13 00:06:23,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:23,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525551867] [2021-10-13 00:06:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:23,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 128 proven. 842 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-13 00:06:23,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:23,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525551867] [2021-10-13 00:06:23,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525551867] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:23,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511384253] [2021-10-13 00:06:23,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:06:23,309 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:23,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:23,310 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:06:23,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 00:06:25,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:06:25,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:06:25,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 00:06:25,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 128 proven. 842 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-13 00:06:25,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511384253] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:25,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:06:25,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-13 00:06:25,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959787598] [2021-10-13 00:06:25,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:06:25,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:25,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:06:25,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:06:25,747 INFO L87 Difference]: Start difference. First operand 930 states and 1309 transitions. Second operand has 13 states, 13 states have (on average 14.384615384615385) internal successors, (187), 13 states have internal predecessors, (187), 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 00:06:25,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:25,901 INFO L93 Difference]: Finished difference Result 1125 states and 1564 transitions. [2021-10-13 00:06:25,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:06:25,902 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.384615384615385) internal successors, (187), 13 states have internal predecessors, (187), 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 211 [2021-10-13 00:06:25,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:25,906 INFO L225 Difference]: With dead ends: 1125 [2021-10-13 00:06:25,906 INFO L226 Difference]: Without dead ends: 1040 [2021-10-13 00:06:25,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:06:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2021-10-13 00:06:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1008. [2021-10-13 00:06:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 1007 states have (on average 1.4061569016881827) internal successors, (1416), 1007 states have internal predecessors, (1416), 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 00:06:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1416 transitions. [2021-10-13 00:06:25,936 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1416 transitions. Word has length 211 [2021-10-13 00:06:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:25,936 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1416 transitions. [2021-10-13 00:06:25,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.384615384615385) internal successors, (187), 13 states have internal predecessors, (187), 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 00:06:25,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1416 transitions. [2021-10-13 00:06:25,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-10-13 00:06:25,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:25,939 INFO L512 BasicCegarLoop]: trace histogram [21, 20, 20, 15, 15, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:25,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 00:06:26,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-13 00:06:26,162 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:06:26,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:26,163 INFO L82 PathProgramCache]: Analyzing trace with hash -397716270, now seen corresponding path program 2 times [2021-10-13 00:06:26,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:26,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075280643] [2021-10-13 00:06:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:26,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 159 proven. 1078 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-13 00:06:26,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:26,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075280643] [2021-10-13 00:06:26,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075280643] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:26,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890047567] [2021-10-13 00:06:26,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:06:26,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:26,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:26,472 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:06:26,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 00:06:28,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:06:28,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:06:28,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:06:28,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 159 proven. 1078 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-13 00:06:29,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890047567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:29,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:06:29,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 00:06:29,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631016636] [2021-10-13 00:06:29,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:06:29,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:29,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:06:29,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:06:29,063 INFO L87 Difference]: Start difference. First operand 1008 states and 1416 transitions. Second operand has 14 states, 14 states have (on average 15.0) internal successors, (210), 14 states have internal predecessors, (210), 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 00:06:29,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:29,217 INFO L93 Difference]: Finished difference Result 1675 states and 2346 transitions. [2021-10-13 00:06:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:06:29,218 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.0) internal successors, (210), 14 states have internal predecessors, (210), 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 239 [2021-10-13 00:06:29,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:29,222 INFO L225 Difference]: With dead ends: 1675 [2021-10-13 00:06:29,222 INFO L226 Difference]: Without dead ends: 1121 [2021-10-13 00:06:29,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 67.5ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:06:29,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2021-10-13 00:06:29,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1086. [2021-10-13 00:06:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 1.407373271889401) internal successors, (1527), 1085 states have internal predecessors, (1527), 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 00:06:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1527 transitions. [2021-10-13 00:06:29,297 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1527 transitions. Word has length 239 [2021-10-13 00:06:29,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:29,297 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 1527 transitions. [2021-10-13 00:06:29,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.0) internal successors, (210), 14 states have internal predecessors, (210), 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 00:06:29,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1527 transitions. [2021-10-13 00:06:29,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-10-13 00:06:29,299 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:29,300 INFO L512 BasicCegarLoop]: trace histogram [23, 22, 22, 16, 16, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:29,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 00:06:29,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:29,500 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:06:29,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:29,501 INFO L82 PathProgramCache]: Analyzing trace with hash 220503505, now seen corresponding path program 3 times [2021-10-13 00:06:29,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:29,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738136459] [2021-10-13 00:06:29,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:29,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 158 proven. 1322 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-10-13 00:06:29,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:29,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738136459] [2021-10-13 00:06:29,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738136459] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:29,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998602669] [2021-10-13 00:06:29,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:06:29,749 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:29,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:29,750 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:06:29,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 00:06:31,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-10-13 00:06:31,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:06:31,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 00:06:31,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 158 proven. 1322 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-10-13 00:06:32,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998602669] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:32,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:06:32,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 00:06:32,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966601234] [2021-10-13 00:06:32,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:06:32,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:32,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:06:32,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:06:32,491 INFO L87 Difference]: Start difference. First operand 1086 states and 1527 transitions. Second operand has 15 states, 15 states have (on average 15.0) internal successors, (225), 15 states have internal predecessors, (225), 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 00:06:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:32,657 INFO L93 Difference]: Finished difference Result 1287 states and 1786 transitions. [2021-10-13 00:06:32,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:06:32,657 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 15.0) internal successors, (225), 15 states have internal predecessors, (225), 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 257 [2021-10-13 00:06:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:32,662 INFO L225 Difference]: With dead ends: 1287 [2021-10-13 00:06:32,662 INFO L226 Difference]: Without dead ends: 1202 [2021-10-13 00:06:32,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 70.8ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:06:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-10-13 00:06:32,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1164. [2021-10-13 00:06:32,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1163 states have (on average 1.404987102321582) internal successors, (1634), 1163 states have internal predecessors, (1634), 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 00:06:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1634 transitions. [2021-10-13 00:06:32,695 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1634 transitions. Word has length 257 [2021-10-13 00:06:32,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:32,696 INFO L470 AbstractCegarLoop]: Abstraction has 1164 states and 1634 transitions. [2021-10-13 00:06:32,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.0) internal successors, (225), 15 states have internal predecessors, (225), 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 00:06:32,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1634 transitions. [2021-10-13 00:06:32,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-10-13 00:06:32,698 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:32,698 INFO L512 BasicCegarLoop]: trace histogram [25, 24, 24, 18, 18, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:32,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 00:06:32,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-13 00:06:32,926 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:06:32,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:32,927 INFO L82 PathProgramCache]: Analyzing trace with hash 530835265, now seen corresponding path program 3 times [2021-10-13 00:06:32,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:32,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595264907] [2021-10-13 00:06:32,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:32,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 193 proven. 1614 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-13 00:06:33,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:33,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595264907] [2021-10-13 00:06:33,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595264907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:33,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055729701] [2021-10-13 00:06:33,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:06:33,207 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:33,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:33,208 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:06:33,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 00:06:35,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 00:06:35,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:06:35,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:06:35,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 469 proven. 4 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2021-10-13 00:06:35,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055729701] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:35,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:06:35,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 19 [2021-10-13 00:06:35,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215061097] [2021-10-13 00:06:35,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:06:35,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:35,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:06:35,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:06:35,929 INFO L87 Difference]: Start difference. First operand 1164 states and 1634 transitions. Second operand has 19 states, 19 states have (on average 15.631578947368421) internal successors, (297), 19 states have internal predecessors, (297), 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 00:06:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:36,614 INFO L93 Difference]: Finished difference Result 1312 states and 1833 transitions. [2021-10-13 00:06:36,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 00:06:36,615 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.631578947368421) internal successors, (297), 19 states have internal predecessors, (297), 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 285 [2021-10-13 00:06:36,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:36,619 INFO L225 Difference]: With dead ends: 1312 [2021-10-13 00:06:36,620 INFO L226 Difference]: Without dead ends: 680 [2021-10-13 00:06:36,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 534.9ms TimeCoverageRelationStatistics Valid=591, Invalid=1761, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 00:06:36,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-10-13 00:06:36,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 659. [2021-10-13 00:06:36,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.378419452887538) internal successors, (907), 658 states have internal predecessors, (907), 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 00:06:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 907 transitions. [2021-10-13 00:06:36,642 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 907 transitions. Word has length 285 [2021-10-13 00:06:36,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:36,643 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 907 transitions. [2021-10-13 00:06:36,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.631578947368421) internal successors, (297), 19 states have internal predecessors, (297), 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 00:06:36,644 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 907 transitions. [2021-10-13 00:06:36,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-10-13 00:06:36,646 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:36,647 INFO L512 BasicCegarLoop]: trace histogram [31, 30, 30, 22, 22, 14, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:36,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-13 00:06:36,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:36,866 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:06:36,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:36,867 INFO L82 PathProgramCache]: Analyzing trace with hash -689263377, now seen corresponding path program 4 times [2021-10-13 00:06:36,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:36,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865328217] [2021-10-13 00:06:36,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:36,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:06:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2894 backedges. 218 proven. 2606 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-13 00:06:37,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:06:37,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865328217] [2021-10-13 00:06:37,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865328217] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:37,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509315915] [2021-10-13 00:06:37,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:06:37,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:06:37,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:06:37,357 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:06:37,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-13 00:06:39,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:06:39,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:06:39,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 2069 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 00:06:39,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:06:40,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2894 backedges. 218 proven. 2606 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-13 00:06:40,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509315915] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:06:40,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:06:40,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 00:06:40,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451589372] [2021-10-13 00:06:40,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:06:40,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:06:40,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:06:40,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:06:40,488 INFO L87 Difference]: Start difference. First operand 659 states and 907 transitions. Second operand has 19 states, 19 states have (on average 15.842105263157896) internal successors, (301), 19 states have internal predecessors, (301), 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 00:06:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:06:40,691 INFO L93 Difference]: Finished difference Result 865 states and 1192 transitions. [2021-10-13 00:06:40,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:06:40,691 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.842105263157896) internal successors, (301), 19 states have internal predecessors, (301), 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 349 [2021-10-13 00:06:40,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:06:40,696 INFO L225 Difference]: With dead ends: 865 [2021-10-13 00:06:40,696 INFO L226 Difference]: Without dead ends: 780 [2021-10-13 00:06:40,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:06:40,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-10-13 00:06:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 737. [2021-10-13 00:06:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.377717391304348) internal successors, (1014), 736 states have internal predecessors, (1014), 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 00:06:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1014 transitions. [2021-10-13 00:06:40,718 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1014 transitions. Word has length 349 [2021-10-13 00:06:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:06:40,719 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 1014 transitions. [2021-10-13 00:06:40,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.842105263157896) internal successors, (301), 19 states have internal predecessors, (301), 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 00:06:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1014 transitions. [2021-10-13 00:06:40,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-10-13 00:06:40,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:06:40,723 INFO L512 BasicCegarLoop]: trace histogram [35, 34, 34, 25, 25, 16, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:06:40,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-13 00:06:40,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-13 00:06:40,950 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:06:40,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:06:40,951 INFO L82 PathProgramCache]: Analyzing trace with hash 49372446, now seen corresponding path program 5 times [2021-10-13 00:06:40,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:06:40,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432251194] [2021-10-13 00:06:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:06:40,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:06:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:06:42,814 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:06:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:06:44,080 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:06:44,080 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:06:44,081 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:06:44,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-13 00:06:44,100 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:06:44,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:06:44 BoogieIcfgContainer [2021-10-13 00:06:44,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:06:44,470 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:06:44,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:06:44,471 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:06:44,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:05:22" (3/4) ... [2021-10-13 00:06:44,474 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:06:44,825 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:06:44,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:06:44,827 INFO L168 Benchmark]: Toolchain (without parser) took 84412.96 ms. Allocated memory was 96.5 MB in the beginning and 1.1 GB in the end (delta: 968.9 MB). Free memory was 63.6 MB in the beginning and 781.2 MB in the end (delta: -717.6 MB). Peak memory consumption was 251.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:06:44,828 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 96.5 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:06:44,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.00 ms. Allocated memory was 96.5 MB in the beginning and 132.1 MB in the end (delta: 35.7 MB). Free memory was 63.3 MB in the beginning and 100.6 MB in the end (delta: -37.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:06:44,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 113.55 ms. Allocated memory is still 132.1 MB. Free memory was 99.9 MB in the beginning and 95.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:06:44,829 INFO L168 Benchmark]: Boogie Preprocessor took 60.15 ms. Allocated memory is still 132.1 MB. Free memory was 95.7 MB in the beginning and 92.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:06:44,829 INFO L168 Benchmark]: RCFGBuilder took 1080.84 ms. Allocated memory is still 132.1 MB. Free memory was 92.9 MB in the beginning and 61.5 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:06:44,830 INFO L168 Benchmark]: TraceAbstraction took 82181.69 ms. Allocated memory was 132.1 MB in the beginning and 1.1 GB in the end (delta: 933.2 MB). Free memory was 61.5 MB in the beginning and 827.6 MB in the end (delta: -766.2 MB). Peak memory consumption was 516.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:06:44,830 INFO L168 Benchmark]: Witness Printer took 355.37 ms. Allocated memory is still 1.1 GB. Free memory was 827.6 MB in the beginning and 781.2 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:06:44,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 96.5 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 581.00 ms. Allocated memory was 96.5 MB in the beginning and 132.1 MB in the end (delta: 35.7 MB). Free memory was 63.3 MB in the beginning and 100.6 MB in the end (delta: -37.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 113.55 ms. Allocated memory is still 132.1 MB. Free memory was 99.9 MB in the beginning and 95.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.15 ms. Allocated memory is still 132.1 MB. Free memory was 95.7 MB in the beginning and 92.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1080.84 ms. Allocated memory is still 132.1 MB. Free memory was 92.9 MB in the beginning and 61.5 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 82181.69 ms. Allocated memory was 132.1 MB in the beginning and 1.1 GB in the end (delta: 933.2 MB). Free memory was 61.5 MB in the beginning and 827.6 MB in the end (delta: -766.2 MB). Peak memory consumption was 516.3 MB. Max. memory is 16.1 GB. * Witness Printer took 355.37 ms. Allocated memory is still 1.1 GB. Free memory was 827.6 MB in the beginning and 781.2 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 571]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L7] int m_Protocol = 1; [L8] int m_msg_2 = 2; [L9] int m_recv_ack_2 = 3; [L10] int m_msg_1_1 = 4; [L11] int m_msg_1_2 = 5; [L12] int m_recv_ack_1_1 = 6; [L13] int m_recv_ack_1_2 = 7; VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L18] int q = 0; [L19] int method_id; [L22] int this_expect = 0; [L23] int this_buffer_empty = 0; VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND TRUE q == 0 [L46] COND TRUE __VERIFIER_nondet_int() [L50] method_id = 1 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L52] COND FALSE !(0) [L56] q = 1 [L58] this_expect=0 [L58] this_buffer_empty=1 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND TRUE this_expect > 16 [L41] this_expect = -16 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND TRUE (((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2)))) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L571] reach_error() VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 110 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 81721.0ms, OverallIterations: 40, TraceHistogramMax: 35, EmptinessCheckTime: 91.3ms, AutomataDifference: 8918.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8454 SDtfs, 16899 SDslu, 46330 SDs, 0 SdLazy, 7479 SolverSat, 862 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5057.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4458 GetRequests, 4017 SyntacticMatches, 27 SemanticMatches, 414 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1344 ImplicationChecksByTransitivity, 4868.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1164occurred in iteration=37, InterpolantAutomatonStates: 413, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 695.7ms AutomataMinimizationTime, 39 MinimizatonAttempts, 385 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1010.5ms SsaConstructionTime, 7096.6ms SatisfiabilityAnalysisTime, 28494.8ms InterpolantComputationTime, 8561 NumberOfCodeBlocks, 8239 NumberOfCodeBlocksAsserted, 125 NumberOfCheckSat, 8097 ConstructedInterpolants, 0 QuantifiedInterpolants, 47754 SizeOfPredicates, 63 NumberOfNonLiveVariables, 22562 ConjunctsInSsa, 698 ConjunctsInUnsatCore, 69 InterpolantComputations, 10 PerfectInterpolantSequences, 7912/31839 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 00:06:44,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5433da1f-fb1b-4085-80b6-3120201a6b47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...