./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.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_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/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_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/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_6b07947b-f28b-4e84-9f29-b510bfd9babd/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 e42acecc60a22c4c35e0f65ff603b488451c653e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:46:08,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:46:08,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:46:08,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:46:08,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:46:08,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:46:08,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:46:08,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:46:08,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:46:08,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:46:08,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:46:08,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:46:08,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:46:08,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:46:08,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:46:08,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:46:08,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:46:08,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:46:08,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:46:08,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:46:08,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:46:08,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:46:08,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:46:08,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:46:08,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:46:08,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:46:08,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:46:08,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:46:08,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:46:08,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:46:08,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:46:08,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:46:08,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:46:08,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:46:08,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:46:08,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:46:08,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:46:08,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:46:08,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:46:08,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:46:08,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:46:08,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:46:08,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:46:08,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:46:08,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:46:08,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:46:08,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:46:08,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:46:08,976 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:46:08,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:46:08,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:46:08,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:46:08,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:46:08,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:46:08,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:46:08,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:46:08,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:46:08,978 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:46:08,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:46:08,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:46:08,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:46:08,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:46:08,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:46:08,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:46:08,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:46:08,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:46:08,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:46:08,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:46:08,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:46:08,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:46:08,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:46:08,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:46:08,981 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_6b07947b-f28b-4e84-9f29-b510bfd9babd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e42acecc60a22c4c35e0f65ff603b488451c653e [2021-10-13 00:46:09,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:46:09,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:46:09,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:46:09,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:46:09,278 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:46:09,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c [2021-10-13 00:46:09,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/data/2e86f4964/ea387decbe94442991e0294c9449464f/FLAGd7ec6c710 [2021-10-13 00:46:09,856 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:46:09,857 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c [2021-10-13 00:46:09,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/data/2e86f4964/ea387decbe94442991e0294c9449464f/FLAGd7ec6c710 [2021-10-13 00:46:10,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/data/2e86f4964/ea387decbe94442991e0294c9449464f [2021-10-13 00:46:10,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:46:10,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:46:10,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:46:10,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:46:10,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:46:10,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:46:10" (1/1) ... [2021-10-13 00:46:10,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@451dded8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:10, skipping insertion in model container [2021-10-13 00:46:10,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:46:10" (1/1) ... [2021-10-13 00:46:10,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:46:10,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:46:10,410 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_6b07947b-f28b-4e84-9f29-b510bfd9babd/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c[490,503] [2021-10-13 00:46:10,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:46:10,440 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:46:10,452 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_6b07947b-f28b-4e84-9f29-b510bfd9babd/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c[490,503] [2021-10-13 00:46:10,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:46:10,476 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:46:10,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:10 WrapperNode [2021-10-13 00:46:10,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:46:10,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:46:10,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:46:10,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:46:10,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:10" (1/1) ... [2021-10-13 00:46:10,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:10" (1/1) ... [2021-10-13 00:46:10,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:46:10,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:46:10,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:46:10,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:46:10,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:10" (1/1) ... [2021-10-13 00:46:10,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:10" (1/1) ... [2021-10-13 00:46:10,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:10" (1/1) ... [2021-10-13 00:46:10,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:10" (1/1) ... [2021-10-13 00:46:10,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:10" (1/1) ... [2021-10-13 00:46:10,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:10" (1/1) ... [2021-10-13 00:46:10,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:10" (1/1) ... [2021-10-13 00:46:10,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:46:10,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:46:10,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:46:10,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:46:10,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:10" (1/1) ... [2021-10-13 00:46:10,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:46:10,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:10,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:46:10,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:46:10,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:46:10,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:46:10,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:46:10,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:46:10,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:46:10,888 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-13 00:46:10,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:46:10 BoogieIcfgContainer [2021-10-13 00:46:10,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:46:10,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:46:10,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:46:10,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:46:10,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:46:10" (1/3) ... [2021-10-13 00:46:10,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bcfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:46:10, skipping insertion in model container [2021-10-13 00:46:10,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:10" (2/3) ... [2021-10-13 00:46:10,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bcfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:46:10, skipping insertion in model container [2021-10-13 00:46:10,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:46:10" (3/3) ... [2021-10-13 00:46:10,912 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound10.c [2021-10-13 00:46:10,917 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:46:10,918 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 00:46:10,996 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:46:11,015 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 00:46:11,016 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 00:46:11,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 38 states have (on average 1.631578947368421) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 00:46:11,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:46:11,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:11,039 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:11,039 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:11,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:11,046 INFO L82 PathProgramCache]: Analyzing trace with hash 823104699, now seen corresponding path program 1 times [2021-10-13 00:46:11,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:11,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895633223] [2021-10-13 00:46:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:11,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:11,228 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 00:46:11,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:11,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895633223] [2021-10-13 00:46:11,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895633223] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:11,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:11,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:46:11,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408338638] [2021-10-13 00:46:11,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:46:11,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:11,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:46:11,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:46:11,267 INFO L87 Difference]: Start difference. First operand has 45 states, 38 states have (on average 1.631578947368421) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 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 00:46:11,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:11,297 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2021-10-13 00:46:11,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:46:11,301 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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 00:46:11,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:11,313 INFO L225 Difference]: With dead ends: 87 [2021-10-13 00:46:11,313 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 00:46:11,317 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 00:46:11,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 00:46:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-13 00:46:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.2) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:11,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-10-13 00:46:11,357 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 17 [2021-10-13 00:46:11,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:11,359 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-10-13 00:46:11,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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 00:46:11,361 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-10-13 00:46:11,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:46:11,364 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:11,364 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:11,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:46:11,365 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:11,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:11,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1122121916, now seen corresponding path program 1 times [2021-10-13 00:46:11,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:11,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529887887] [2021-10-13 00:46:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:11,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:11,414 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:11,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366630506] [2021-10-13 00:46:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:11,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:11,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:11,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:11,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:46:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:11,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:46:11,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:11,678 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 00:46:11,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:11,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529887887] [2021-10-13 00:46:11,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:11,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366630506] [2021-10-13 00:46:11,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366630506] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:11,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:11,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:46:11,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532943739] [2021-10-13 00:46:11,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:46:11,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:11,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:46:11,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:46:11,687 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:11,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:11,848 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-10-13 00:46:11,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:46:11,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 00:46:11,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:11,852 INFO L225 Difference]: With dead ends: 69 [2021-10-13 00:46:11,852 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 00:46:11,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:46:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 00:46:11,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2021-10-13 00:46:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:46:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-10-13 00:46:11,873 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 18 [2021-10-13 00:46:11,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:11,874 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-10-13 00:46:11,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-10-13 00:46:11,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:46:11,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:11,876 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:11,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:12,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-13 00:46:12,114 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:12,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:12,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1122125890, now seen corresponding path program 1 times [2021-10-13 00:46:12,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:12,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089122677] [2021-10-13 00:46:12,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:12,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:12,155 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:12,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170052836] [2021-10-13 00:46:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:12,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:12,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:12,158 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:12,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:46:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:12,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:46:12,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:12,490 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 00:46:12,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:12,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089122677] [2021-10-13 00:46:12,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:12,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170052836] [2021-10-13 00:46:12,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170052836] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:12,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:12,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:46:12,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919098516] [2021-10-13 00:46:12,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:46:12,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:46:12,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:46:12,502 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:12,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:12,695 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2021-10-13 00:46:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:46:12,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 00:46:12,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:12,698 INFO L225 Difference]: With dead ends: 79 [2021-10-13 00:46:12,698 INFO L226 Difference]: Without dead ends: 77 [2021-10-13 00:46:12,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 97.5ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:46:12,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-13 00:46:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 45. [2021-10-13 00:46:12,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 00:46:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-10-13 00:46:12,714 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 18 [2021-10-13 00:46:12,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:12,715 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-13 00:46:12,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:12,715 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-10-13 00:46:12,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:46:12,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:12,716 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:12,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:12,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:12,930 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:12,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:12,930 INFO L82 PathProgramCache]: Analyzing trace with hash 326346277, now seen corresponding path program 1 times [2021-10-13 00:46:12,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:12,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466571409] [2021-10-13 00:46:12,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:12,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:12,954 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:12,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284007031] [2021-10-13 00:46:12,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:12,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:12,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:12,973 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:12,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:46:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:13,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:46:13,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:13,519 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 00:46:13,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:13,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466571409] [2021-10-13 00:46:13,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:13,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284007031] [2021-10-13 00:46:13,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284007031] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:13,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:13,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:46:13,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505906236] [2021-10-13 00:46:13,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:46:13,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:46:13,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:46:13,523 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 00:46:13,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:13,678 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-10-13 00:46:13,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:46:13,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-10-13 00:46:13,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:13,680 INFO L225 Difference]: With dead ends: 63 [2021-10-13 00:46:13,680 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 00:46:13,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.6ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:46:13,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 00:46:13,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-13 00:46:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 53 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 00:46:13,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-10-13 00:46:13,687 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 20 [2021-10-13 00:46:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:13,687 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-10-13 00:46:13,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 00:46:13,688 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-10-13 00:46:13,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:46:13,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:13,689 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:13,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-13 00:46:13,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:13,911 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:13,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:13,911 INFO L82 PathProgramCache]: Analyzing trace with hash 86317224, now seen corresponding path program 1 times [2021-10-13 00:46:13,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:13,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302292358] [2021-10-13 00:46:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:13,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:13,926 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:13,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079427237] [2021-10-13 00:46:13,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:13,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:13,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:13,928 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:13,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:46:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:14,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 00:46:14,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:14,369 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 00:46:14,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:14,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302292358] [2021-10-13 00:46:14,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:14,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079427237] [2021-10-13 00:46:14,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079427237] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:14,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:14,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 00:46:14,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668363855] [2021-10-13 00:46:14,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:46:14,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:14,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:46:14,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:46:14,381 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 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 00:46:14,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:14,534 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-10-13 00:46:14,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:46:14,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 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 22 [2021-10-13 00:46:14,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:14,537 INFO L225 Difference]: With dead ends: 61 [2021-10-13 00:46:14,537 INFO L226 Difference]: Without dead ends: 59 [2021-10-13 00:46:14,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 99.9ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:46:14,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-13 00:46:14,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2021-10-13 00:46:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 00:46:14,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-10-13 00:46:14,552 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2021-10-13 00:46:14,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:14,552 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-10-13 00:46:14,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 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 00:46:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-10-13 00:46:14,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:46:14,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:14,554 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:14,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:14,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:14,782 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:14,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:14,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1346631627, now seen corresponding path program 1 times [2021-10-13 00:46:14,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:14,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861763931] [2021-10-13 00:46:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:14,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:14,797 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:14,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471930002] [2021-10-13 00:46:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:14,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:14,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:14,798 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:14,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:46:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:14,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:46:14,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:15,256 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 00:46:15,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:15,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861763931] [2021-10-13 00:46:15,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:15,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471930002] [2021-10-13 00:46:15,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471930002] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:15,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:15,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:46:15,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336729470] [2021-10-13 00:46:15,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:46:15,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:15,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:46:15,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:46:15,259 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 00:46:15,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:15,393 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-10-13 00:46:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:46:15,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 00:46:15,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:15,395 INFO L225 Difference]: With dead ends: 63 [2021-10-13 00:46:15,395 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 00:46:15,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:46:15,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 00:46:15,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-13 00:46:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1875) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-10-13 00:46:15,401 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 24 [2021-10-13 00:46:15,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:15,401 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-10-13 00:46:15,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 00:46:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-10-13 00:46:15,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 00:46:15,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:15,402 INFO L512 BasicCegarLoop]: trace histogram [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 00:46:15,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:15,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 00:46:15,618 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:15,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1781730828, now seen corresponding path program 1 times [2021-10-13 00:46:15,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:15,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466785807] [2021-10-13 00:46:15,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:15,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:15,632 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:15,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851846151] [2021-10-13 00:46:15,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:15,633 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:15,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:15,646 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:15,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:46:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:15,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:46:15,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:15,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:15,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466785807] [2021-10-13 00:46:15,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:15,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851846151] [2021-10-13 00:46:15,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851846151] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:15,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:15,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:46:15,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352992809] [2021-10-13 00:46:15,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:46:15,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:15,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:46:15,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:46:15,922 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:16,001 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2021-10-13 00:46:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:46:16,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 00:46:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:16,003 INFO L225 Difference]: With dead ends: 104 [2021-10-13 00:46:16,003 INFO L226 Difference]: Without dead ends: 102 [2021-10-13 00:46:16,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.2ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:46:16,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-13 00:46:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 74. [2021-10-13 00:46:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 73 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 00:46:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2021-10-13 00:46:16,022 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 27 [2021-10-13 00:46:16,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:16,030 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2021-10-13 00:46:16,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:16,030 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2021-10-13 00:46:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 00:46:16,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:16,033 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 00:46:16,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-13 00:46:16,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:16,246 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:16,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:16,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1655367537, now seen corresponding path program 1 times [2021-10-13 00:46:16,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:16,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40522310] [2021-10-13 00:46:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:16,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:16,259 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:16,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235350712] [2021-10-13 00:46:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:16,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:16,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:16,261 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:16,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:46:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:16,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:46:16,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:16,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:16,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40522310] [2021-10-13 00:46:16,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:16,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235350712] [2021-10-13 00:46:16,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235350712] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:16,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:16,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:46:16,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992426629] [2021-10-13 00:46:16,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:46:16,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:16,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:46:16,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:46:16,551 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 00:46:16,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:16,691 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2021-10-13 00:46:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:46:16,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-10-13 00:46:16,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:16,693 INFO L225 Difference]: With dead ends: 165 [2021-10-13 00:46:16,694 INFO L226 Difference]: Without dead ends: 157 [2021-10-13 00:46:16,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:46:16,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-13 00:46:16,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 109. [2021-10-13 00:46:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 103 states have (on average 1.2718446601941749) internal successors, (131), 108 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2021-10-13 00:46:16,728 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 30 [2021-10-13 00:46:16,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:16,729 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2021-10-13 00:46:16,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 00:46:16,729 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2021-10-13 00:46:16,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 00:46:16,734 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:16,735 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 00:46:16,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:16,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-13 00:46:16,960 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:16,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:16,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1674279834, now seen corresponding path program 1 times [2021-10-13 00:46:16,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:16,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618209856] [2021-10-13 00:46:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:16,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:16,973 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:16,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451326258] [2021-10-13 00:46:16,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:16,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:16,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:16,975 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:17,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:46:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:17,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 00:46:17,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:17,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:17,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618209856] [2021-10-13 00:46:17,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:17,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451326258] [2021-10-13 00:46:17,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451326258] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:17,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:17,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:46:17,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608248905] [2021-10-13 00:46:17,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:46:17,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:17,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:46:17,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:46:17,407 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 00:46:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:17,533 INFO L93 Difference]: Finished difference Result 176 states and 211 transitions. [2021-10-13 00:46:17,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:46:17,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-10-13 00:46:17,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:17,540 INFO L225 Difference]: With dead ends: 176 [2021-10-13 00:46:17,540 INFO L226 Difference]: Without dead ends: 170 [2021-10-13 00:46:17,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 68.3ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:46:17,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-13 00:46:17,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2021-10-13 00:46:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 151 states have (on average 1.2847682119205297) internal successors, (194), 156 states have internal predecessors, (194), 0 states have call successors, (0), 0 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 00:46:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 194 transitions. [2021-10-13 00:46:17,562 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 194 transitions. Word has length 32 [2021-10-13 00:46:17,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:17,562 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 194 transitions. [2021-10-13 00:46:17,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 00:46:17,563 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 194 transitions. [2021-10-13 00:46:17,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 00:46:17,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:17,564 INFO L512 BasicCegarLoop]: trace histogram [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 00:46:17,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:17,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-13 00:46:17,790 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:17,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:17,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1629657891, now seen corresponding path program 1 times [2021-10-13 00:46:17,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:17,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266523797] [2021-10-13 00:46:17,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:17,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:17,802 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:17,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349512285] [2021-10-13 00:46:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:17,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:17,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:17,803 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:17,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:46:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:17,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 00:46:17,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:18,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:18,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266523797] [2021-10-13 00:46:18,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:18,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349512285] [2021-10-13 00:46:18,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349512285] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:18,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:18,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:46:18,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573287274] [2021-10-13 00:46:18,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:46:18,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:18,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:46:18,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:46:18,523 INFO L87 Difference]: Start difference. First operand 157 states and 194 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 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 00:46:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:18,718 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2021-10-13 00:46:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:46:18,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 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 34 [2021-10-13 00:46:18,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:18,720 INFO L225 Difference]: With dead ends: 167 [2021-10-13 00:46:18,720 INFO L226 Difference]: Without dead ends: 165 [2021-10-13 00:46:18,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 89.8ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:46:18,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-13 00:46:18,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2021-10-13 00:46:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 151 states have (on average 1.271523178807947) internal successors, (192), 156 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 00:46:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 192 transitions. [2021-10-13 00:46:18,743 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 192 transitions. Word has length 34 [2021-10-13 00:46:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:18,743 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 192 transitions. [2021-10-13 00:46:18,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 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 00:46:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 192 transitions. [2021-10-13 00:46:18,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:46:18,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:18,746 INFO L512 BasicCegarLoop]: trace histogram [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 00:46:18,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:18,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 00:46:18,962 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:18,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:18,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1561987776, now seen corresponding path program 1 times [2021-10-13 00:46:18,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:18,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582664509] [2021-10-13 00:46:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:18,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:18,977 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:18,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617637794] [2021-10-13 00:46:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:18,978 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:18,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:18,979 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:19,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:46:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:19,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 00:46:19,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:20,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:20,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582664509] [2021-10-13 00:46:20,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:20,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617637794] [2021-10-13 00:46:20,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617637794] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:20,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:20,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-13 00:46:20,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020669533] [2021-10-13 00:46:20,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:46:20,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:20,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:46:20,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:46:20,165 INFO L87 Difference]: Start difference. First operand 157 states and 192 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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 00:46:20,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:20,453 INFO L93 Difference]: Finished difference Result 172 states and 205 transitions. [2021-10-13 00:46:20,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:46:20,453 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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 36 [2021-10-13 00:46:20,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:20,455 INFO L225 Difference]: With dead ends: 172 [2021-10-13 00:46:20,455 INFO L226 Difference]: Without dead ends: 170 [2021-10-13 00:46:20,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 227.6ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:46:20,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-13 00:46:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2021-10-13 00:46:20,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 151 states have (on average 1.2582781456953642) internal successors, (190), 156 states have internal predecessors, (190), 0 states have call successors, (0), 0 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 00:46:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2021-10-13 00:46:20,471 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 36 [2021-10-13 00:46:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:20,472 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2021-10-13 00:46:20,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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 00:46:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2021-10-13 00:46:20,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:46:20,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:20,473 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:20,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:20,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-13 00:46:20,694 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:20,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:20,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1088491650, now seen corresponding path program 2 times [2021-10-13 00:46:20,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:20,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303485449] [2021-10-13 00:46:20,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:20,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:20,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:20,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454002222] [2021-10-13 00:46:20,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:46:20,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:20,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:20,708 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:20,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 00:46:20,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:46:20,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:46:20,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 00:46:20,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:21,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:21,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303485449] [2021-10-13 00:46:21,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:21,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454002222] [2021-10-13 00:46:21,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454002222] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:21,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:21,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-13 00:46:21,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515985467] [2021-10-13 00:46:21,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:46:21,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:21,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:46:21,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:46:21,703 INFO L87 Difference]: Start difference. First operand 157 states and 190 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 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 00:46:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:22,347 INFO L93 Difference]: Finished difference Result 179 states and 213 transitions. [2021-10-13 00:46:22,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:46:22,348 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 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 36 [2021-10-13 00:46:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:22,349 INFO L225 Difference]: With dead ends: 179 [2021-10-13 00:46:22,349 INFO L226 Difference]: Without dead ends: 177 [2021-10-13 00:46:22,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 405.0ms TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:46:22,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-13 00:46:22,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 166. [2021-10-13 00:46:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 160 states have (on average 1.25) internal successors, (200), 165 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:22,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 200 transitions. [2021-10-13 00:46:22,375 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 200 transitions. Word has length 36 [2021-10-13 00:46:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:22,376 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 200 transitions. [2021-10-13 00:46:22,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 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 00:46:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 200 transitions. [2021-10-13 00:46:22,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 00:46:22,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:22,378 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 00:46:22,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:22,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:22,598 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:22,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:22,598 INFO L82 PathProgramCache]: Analyzing trace with hash -50686429, now seen corresponding path program 1 times [2021-10-13 00:46:22,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:22,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473610680] [2021-10-13 00:46:22,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:22,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:22,626 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:22,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248005390] [2021-10-13 00:46:22,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:22,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:22,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:22,630 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:22,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 00:46:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:22,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 00:46:22,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:23,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:23,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473610680] [2021-10-13 00:46:23,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:23,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248005390] [2021-10-13 00:46:23,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248005390] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:23,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:23,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:46:23,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296737512] [2021-10-13 00:46:23,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:46:23,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:23,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:46:23,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:46:23,668 INFO L87 Difference]: Start difference. First operand 166 states and 200 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:46:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:24,025 INFO L93 Difference]: Finished difference Result 202 states and 239 transitions. [2021-10-13 00:46:24,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:46:24,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-10-13 00:46:24,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:24,036 INFO L225 Difference]: With dead ends: 202 [2021-10-13 00:46:24,036 INFO L226 Difference]: Without dead ends: 196 [2021-10-13 00:46:24,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 164.5ms TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:46:24,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-13 00:46:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 189. [2021-10-13 00:46:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 183 states have (on average 1.2459016393442623) internal successors, (228), 188 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 00:46:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 228 transitions. [2021-10-13 00:46:24,061 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 228 transitions. Word has length 39 [2021-10-13 00:46:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:24,061 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 228 transitions. [2021-10-13 00:46:24,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:46:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 228 transitions. [2021-10-13 00:46:24,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 00:46:24,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:24,063 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:24,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:24,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:24,263 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:24,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:24,264 INFO L82 PathProgramCache]: Analyzing trace with hash -269629041, now seen corresponding path program 2 times [2021-10-13 00:46:24,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:24,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364564857] [2021-10-13 00:46:24,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:24,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:24,275 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:24,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067527372] [2021-10-13 00:46:24,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:46:24,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:24,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:24,277 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:24,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 00:46:24,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:46:24,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:46:24,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:46:24,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:24,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:24,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364564857] [2021-10-13 00:46:24,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:24,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067527372] [2021-10-13 00:46:24,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067527372] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:24,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:24,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:46:24,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525782843] [2021-10-13 00:46:24,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:46:24,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:24,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:46:24,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:46:24,758 INFO L87 Difference]: Start difference. First operand 189 states and 228 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:46:24,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:24,838 INFO L93 Difference]: Finished difference Result 248 states and 293 transitions. [2021-10-13 00:46:24,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:46:24,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-10-13 00:46:24,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:24,840 INFO L225 Difference]: With dead ends: 248 [2021-10-13 00:46:24,840 INFO L226 Difference]: Without dead ends: 174 [2021-10-13 00:46:24,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:46:24,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-13 00:46:24,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 154. [2021-10-13 00:46:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 148 states have (on average 1.1824324324324325) internal successors, (175), 153 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 00:46:24,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 175 transitions. [2021-10-13 00:46:24,863 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 175 transitions. Word has length 44 [2021-10-13 00:46:24,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:24,863 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 175 transitions. [2021-10-13 00:46:24,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:46:24,863 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 175 transitions. [2021-10-13 00:46:24,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 00:46:24,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:24,864 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:24,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:25,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 00:46:25,083 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:25,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:25,084 INFO L82 PathProgramCache]: Analyzing trace with hash 75787250, now seen corresponding path program 1 times [2021-10-13 00:46:25,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:25,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631355810] [2021-10-13 00:46:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:25,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:25,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:25,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725133231] [2021-10-13 00:46:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:25,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:25,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:25,095 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:25,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 00:46:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:25,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-13 00:46:25,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:27,102 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:27,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:27,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631355810] [2021-10-13 00:46:27,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:27,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725133231] [2021-10-13 00:46:27,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725133231] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:27,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:27,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:46:27,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782521527] [2021-10-13 00:46:27,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:46:27,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:27,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:46:27,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:46:27,105 INFO L87 Difference]: Start difference. First operand 154 states and 175 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 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 00:46:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:28,191 INFO L93 Difference]: Finished difference Result 165 states and 184 transitions. [2021-10-13 00:46:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:46:28,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 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 45 [2021-10-13 00:46:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:28,192 INFO L225 Difference]: With dead ends: 165 [2021-10-13 00:46:28,192 INFO L226 Difference]: Without dead ends: 163 [2021-10-13 00:46:28,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 414.5ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:46:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-13 00:46:28,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 131. [2021-10-13 00:46:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 125 states have (on average 1.184) internal successors, (148), 130 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 00:46:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 148 transitions. [2021-10-13 00:46:28,212 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 148 transitions. Word has length 45 [2021-10-13 00:46:28,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:28,212 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 148 transitions. [2021-10-13 00:46:28,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 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 00:46:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 148 transitions. [2021-10-13 00:46:28,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 00:46:28,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:28,214 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:28,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:28,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 00:46:28,431 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:28,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:28,432 INFO L82 PathProgramCache]: Analyzing trace with hash -397708876, now seen corresponding path program 3 times [2021-10-13 00:46:28,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:28,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82228977] [2021-10-13 00:46:28,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:28,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:28,449 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:28,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550944900] [2021-10-13 00:46:28,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:46:28,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:28,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:28,480 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:28,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 00:46:28,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 00:46:28,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:46:28,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 00:46:28,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 00:46:29,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:29,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82228977] [2021-10-13 00:46:29,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:29,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550944900] [2021-10-13 00:46:29,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550944900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:29,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:29,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:46:29,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126917983] [2021-10-13 00:46:29,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:46:29,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:29,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:46:29,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:46:29,518 INFO L87 Difference]: Start difference. First operand 131 states and 148 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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 00:46:29,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:29,642 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2021-10-13 00:46:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:46:29,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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 45 [2021-10-13 00:46:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:29,645 INFO L225 Difference]: With dead ends: 131 [2021-10-13 00:46:29,645 INFO L226 Difference]: Without dead ends: 129 [2021-10-13 00:46:29,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:46:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-13 00:46:29,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2021-10-13 00:46:29,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.1637931034482758) internal successors, (135), 120 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 00:46:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 135 transitions. [2021-10-13 00:46:29,664 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 135 transitions. Word has length 45 [2021-10-13 00:46:29,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:29,664 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 135 transitions. [2021-10-13 00:46:29,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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 00:46:29,665 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 135 transitions. [2021-10-13 00:46:29,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-13 00:46:29,666 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:29,666 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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 00:46:29,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:29,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 00:46:29,887 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:29,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1367297969, now seen corresponding path program 2 times [2021-10-13 00:46:29,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:29,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208677496] [2021-10-13 00:46:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:29,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:29,900 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:29,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961563197] [2021-10-13 00:46:29,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:46:29,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:29,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:29,914 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:29,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 00:46:30,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:46:30,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:46:30,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-13 00:46:30,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:31,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:31,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208677496] [2021-10-13 00:46:31,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:31,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961563197] [2021-10-13 00:46:31,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961563197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:31,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:31,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:46:31,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796317250] [2021-10-13 00:46:31,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:46:31,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:31,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:46:31,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:46:31,532 INFO L87 Difference]: Start difference. First operand 121 states and 135 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:32,395 INFO L93 Difference]: Finished difference Result 161 states and 179 transitions. [2021-10-13 00:46:32,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:46:32,404 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-13 00:46:32,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:32,406 INFO L225 Difference]: With dead ends: 161 [2021-10-13 00:46:32,406 INFO L226 Difference]: Without dead ends: 155 [2021-10-13 00:46:32,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 615.7ms TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:46:32,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-13 00:46:32,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2021-10-13 00:46:32,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 146 states have (on average 1.1575342465753424) internal successors, (169), 150 states have internal predecessors, (169), 0 states have call successors, (0), 0 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 00:46:32,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 169 transitions. [2021-10-13 00:46:32,431 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 169 transitions. Word has length 48 [2021-10-13 00:46:32,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:32,431 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 169 transitions. [2021-10-13 00:46:32,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 169 transitions. [2021-10-13 00:46:32,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 00:46:32,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:32,432 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:32,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:32,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 00:46:32,654 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:46:32,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:32,654 INFO L82 PathProgramCache]: Analyzing trace with hash 194484878, now seen corresponding path program 3 times [2021-10-13 00:46:32,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:32,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158362205] [2021-10-13 00:46:32,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:32,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:32,679 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:32,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733671202] [2021-10-13 00:46:32,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:46:32,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:32,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:32,681 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:32,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 00:46:33,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:46:33,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:46:33,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 00:46:33,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 00:46:41,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:41,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158362205] [2021-10-13 00:46:41,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:41,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733671202] [2021-10-13 00:46:41,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733671202] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:41,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:41,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:46:41,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944057279] [2021-10-13 00:46:41,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:46:41,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:41,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:46:41,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=114, Unknown=3, NotChecked=0, Total=156 [2021-10-13 00:46:41,639 INFO L87 Difference]: Start difference. First operand 151 states and 169 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 00:47:14,198 WARN L207 SmtUtils]: Spent 18.11 s on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-10-13 00:47:32,506 WARN L207 SmtUtils]: Spent 16.29 s on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2021-10-13 00:47:52,690 WARN L207 SmtUtils]: Spent 18.16 s on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-10-13 00:48:15,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:15,161 INFO L93 Difference]: Finished difference Result 153 states and 170 transitions. [2021-10-13 00:48:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:48:15,162 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 00:48:15,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:15,163 INFO L225 Difference]: With dead ends: 153 [2021-10-13 00:48:15,163 INFO L226 Difference]: Without dead ends: 147 [2021-10-13 00:48:15,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 79710.4ms TimeCoverageRelationStatistics Valid=141, Invalid=398, Unknown=13, NotChecked=0, Total=552 [2021-10-13 00:48:15,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-13 00:48:15,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 133. [2021-10-13 00:48:15,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 1.1162790697674418) internal successors, (144), 132 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 00:48:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2021-10-13 00:48:15,189 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 51 [2021-10-13 00:48:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:15,190 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2021-10-13 00:48:15,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 00:48:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2021-10-13 00:48:15,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:48:15,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:15,191 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 00:48:15,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:48:15,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:48:15,418 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:48:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:15,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2078434191, now seen corresponding path program 1 times [2021-10-13 00:48:15,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:48:15,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102077205] [2021-10-13 00:48:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:15,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:48:15,439 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:48:15,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107730383] [2021-10-13 00:48:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:15,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:48:15,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:48:15,446 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:48:15,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 00:48:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:16,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:48:16,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:48:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:48:16,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:48:16,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102077205] [2021-10-13 00:48:16,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:48:16,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107730383] [2021-10-13 00:48:16,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107730383] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:48:16,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:48:16,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:48:16,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091142180] [2021-10-13 00:48:16,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:48:16,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:48:16,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:48:16,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:48:16,205 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 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 00:48:16,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:16,431 INFO L93 Difference]: Finished difference Result 219 states and 234 transitions. [2021-10-13 00:48:16,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:48:16,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-10-13 00:48:16,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:16,434 INFO L225 Difference]: With dead ends: 219 [2021-10-13 00:48:16,434 INFO L226 Difference]: Without dead ends: 213 [2021-10-13 00:48:16,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 86.3ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:48:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-13 00:48:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 163. [2021-10-13 00:48:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 159 states have (on average 1.1320754716981132) internal successors, (180), 162 states have internal predecessors, (180), 0 states have call successors, (0), 0 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 00:48:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 180 transitions. [2021-10-13 00:48:16,466 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 180 transitions. Word has length 53 [2021-10-13 00:48:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:16,466 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 180 transitions. [2021-10-13 00:48:16,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 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 00:48:16,466 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 180 transitions. [2021-10-13 00:48:16,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:48:16,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:16,467 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:48:16,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:48:16,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:48:16,694 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:48:16,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:16,694 INFO L82 PathProgramCache]: Analyzing trace with hash -2074616969, now seen corresponding path program 1 times [2021-10-13 00:48:16,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:48:16,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326434827] [2021-10-13 00:48:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:16,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:48:16,704 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:48:16,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389577520] [2021-10-13 00:48:16,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:16,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:48:16,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:48:16,707 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:48:16,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 00:48:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:17,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:48:17,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:48:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-13 00:48:17,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:48:17,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326434827] [2021-10-13 00:48:17,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:48:17,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389577520] [2021-10-13 00:48:17,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389577520] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:48:17,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:48:17,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:48:17,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736460829] [2021-10-13 00:48:17,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:48:17,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:48:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:48:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:48:17,523 INFO L87 Difference]: Start difference. First operand 163 states and 180 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:48:17,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:17,669 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2021-10-13 00:48:17,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:48:17,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 53 [2021-10-13 00:48:17,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:17,671 INFO L225 Difference]: With dead ends: 165 [2021-10-13 00:48:17,671 INFO L226 Difference]: Without dead ends: 155 [2021-10-13 00:48:17,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 82.9ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:48:17,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-13 00:48:17,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 97. [2021-10-13 00:48:17,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 96 states have internal predecessors, (103), 0 states have call successors, (0), 0 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 00:48:17,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2021-10-13 00:48:17,692 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 53 [2021-10-13 00:48:17,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:17,693 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2021-10-13 00:48:17,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:48:17,693 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2021-10-13 00:48:17,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 00:48:17,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:17,694 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:48:17,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:48:17,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:48:17,910 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:48:17,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:17,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1634778368, now seen corresponding path program 2 times [2021-10-13 00:48:17,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:48:17,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673771732] [2021-10-13 00:48:17,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:17,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:48:17,931 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:48:17,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051233166] [2021-10-13 00:48:17,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:48:17,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:48:17,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:48:17,934 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:48:17,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 00:48:19,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 00:48:19,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:48:19,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:48:19,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:48:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-13 00:48:22,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:48:22,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673771732] [2021-10-13 00:48:22,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:48:22,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051233166] [2021-10-13 00:48:22,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051233166] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:48:22,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:48:22,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:48:22,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164583625] [2021-10-13 00:48:22,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:48:22,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:48:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:48:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:48:22,607 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 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 00:48:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:24,236 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2021-10-13 00:48:24,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:48:24,237 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 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 54 [2021-10-13 00:48:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:24,237 INFO L225 Difference]: With dead ends: 97 [2021-10-13 00:48:24,237 INFO L226 Difference]: Without dead ends: 95 [2021-10-13 00:48:24,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1094.1ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:48:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-13 00:48:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 74. [2021-10-13 00:48:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:48:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2021-10-13 00:48:24,250 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 54 [2021-10-13 00:48:24,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:24,251 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2021-10-13 00:48:24,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 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 00:48:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2021-10-13 00:48:24,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 00:48:24,251 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:24,251 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:48:24,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:48:24,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:48:24,452 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:48:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:24,452 INFO L82 PathProgramCache]: Analyzing trace with hash -841924230, now seen corresponding path program 1 times [2021-10-13 00:48:24,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:48:24,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448225209] [2021-10-13 00:48:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:24,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:48:24,463 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:48:24,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239473827] [2021-10-13 00:48:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:24,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:48:24,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:48:24,466 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:48:24,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 00:48:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:25,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 95 conjunts are in the unsatisfiable core [2021-10-13 00:48:25,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:48:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:48:26,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:48:26,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448225209] [2021-10-13 00:48:26,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:48:26,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239473827] [2021-10-13 00:48:26,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239473827] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:48:26,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:48:26,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-10-13 00:48:26,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484108834] [2021-10-13 00:48:26,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 00:48:26,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:48:26,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 00:48:26,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:48:26,988 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:48:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:27,979 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2021-10-13 00:48:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 00:48:27,979 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-13 00:48:27,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:27,981 INFO L225 Difference]: With dead ends: 139 [2021-10-13 00:48:27,981 INFO L226 Difference]: Without dead ends: 137 [2021-10-13 00:48:27,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 857.5ms TimeCoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2021-10-13 00:48:27,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-13 00:48:28,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 86. [2021-10-13 00:48:28,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 00:48:28,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2021-10-13 00:48:28,004 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 55 [2021-10-13 00:48:28,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:28,004 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2021-10-13 00:48:28,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:48:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2021-10-13 00:48:28,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-13 00:48:28,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:28,005 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:48:28,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:48:28,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:48:28,234 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:48:28,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:28,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1920559695, now seen corresponding path program 2 times [2021-10-13 00:48:28,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:48:28,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177385142] [2021-10-13 00:48:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:28,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:48:28,257 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:48:28,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851594175] [2021-10-13 00:48:28,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:48:28,258 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:48:28,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:48:28,261 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:48:28,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 00:48:29,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:48:29,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:48:29,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 00:48:29,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:48:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:48:30,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:48:30,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177385142] [2021-10-13 00:48:30,383 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:48:30,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851594175] [2021-10-13 00:48:30,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851594175] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:48:30,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:48:30,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:48:30,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020082873] [2021-10-13 00:48:30,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:48:30,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:48:30,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:48:30,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:48:30,385 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 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 00:48:31,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:31,138 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2021-10-13 00:48:31,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:48:31,138 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-10-13 00:48:31,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:31,139 INFO L225 Difference]: With dead ends: 140 [2021-10-13 00:48:31,139 INFO L226 Difference]: Without dead ends: 138 [2021-10-13 00:48:31,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 282.0ms TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:48:31,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-13 00:48:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 95. [2021-10-13 00:48:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 94 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 00:48:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2021-10-13 00:48:31,163 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 61 [2021-10-13 00:48:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:31,164 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2021-10-13 00:48:31,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 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 00:48:31,164 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2021-10-13 00:48:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-13 00:48:31,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:31,165 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:48:31,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-13 00:48:31,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-13 00:48:31,387 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:48:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:31,387 INFO L82 PathProgramCache]: Analyzing trace with hash -132092270, now seen corresponding path program 3 times [2021-10-13 00:48:31,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:48:31,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259736858] [2021-10-13 00:48:31,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:31,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:48:31,400 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:48:31,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067771388] [2021-10-13 00:48:31,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:48:31,400 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:48:31,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:48:31,404 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:48:31,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 00:48:33,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:48:33,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:48:33,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 00:48:33,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:48:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 45 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-13 00:48:34,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:48:34,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259736858] [2021-10-13 00:48:34,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:48:34,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067771388] [2021-10-13 00:48:34,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067771388] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:48:34,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:48:34,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-13 00:48:34,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030052885] [2021-10-13 00:48:34,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 00:48:34,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:48:34,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:48:34,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:48:34,893 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 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 00:48:36,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:36,772 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2021-10-13 00:48:36,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:48:36,773 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 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 64 [2021-10-13 00:48:36,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:36,773 INFO L225 Difference]: With dead ends: 95 [2021-10-13 00:48:36,773 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:48:36,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 973.9ms TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:48:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:48:36,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:48:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:48:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:48:36,774 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2021-10-13 00:48:36,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:36,775 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:48:36,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 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 00:48:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:48:36,775 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:48:36,777 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:48:36,778 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:48:36,778 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:48:36,778 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:48:36,778 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:48:36,778 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:48:36,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 00:48:36,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-13 00:48:36,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:48:36,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:36,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:37,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:37,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:37,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:37,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:38,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:38,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:48:38,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:49:11,147 WARN L207 SmtUtils]: Spent 27.89 s on a formula simplification. DAG size of input: 187 DAG size of output: 52 [2021-10-13 00:49:22,825 WARN L207 SmtUtils]: Spent 11.68 s on a formula simplification. DAG size of input: 177 DAG size of output: 70 [2021-10-13 00:49:57,957 WARN L207 SmtUtils]: Spent 35.13 s on a formula simplification. DAG size of input: 180 DAG size of output: 54 [2021-10-13 00:50:06,428 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification. DAG size of input: 113 DAG size of output: 48 [2021-10-13 00:50:06,431 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 00:50:06,431 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-13 00:50:06,431 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse7 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (and (<= 1 ULTIMATE.start_main_~x~0) (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse7)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse5 (<= ULTIMATE.start_main_~x~0 10)) (.cse6 (<= ULTIMATE.start_main_~y~0 10))) (or (and .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_main_~b~0 0)) .cse5 .cse6))) (= ULTIMATE.start_main_~a~0 .cse7))) [2021-10-13 00:50:06,431 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-13 00:50:06,432 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (and (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 .cse0) (let ((.cse1 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse0)) (.cse4 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse5 (<= ULTIMATE.start_main_~x~0 10)) (.cse6 (<= ULTIMATE.start_main_~y~0 10))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_main_~b~0 0)) .cse5 .cse6) (and .cse1 (= ULTIMATE.start_main_~p~0 1) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))))) [2021-10-13 00:50:06,432 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-13 00:50:06,432 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: (let ((.cse7 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (and (<= 1 ULTIMATE.start_main_~x~0) (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse7)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse5 (<= ULTIMATE.start_main_~x~0 10)) (.cse6 (<= ULTIMATE.start_main_~y~0 10))) (or (and .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_main_~b~0 0)) .cse5 .cse6))) (= ULTIMATE.start_main_~a~0 .cse7))) [2021-10-13 00:50:06,432 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-13 00:50:06,432 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 52 53) the Hoare annotation is: (and (let ((.cse7 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)))) (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= .cse7 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse5 (<= ULTIMATE.start_main_~x~0 10)) (.cse6 (<= ULTIMATE.start_main_~y~0 10))) (or (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= .cse7 ULTIMATE.start_main_~a~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_main_~b~0 0)) .cse5 .cse6)))) (<= 1 ULTIMATE.start_main_~x~0)) [2021-10-13 00:50:06,432 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-13 00:50:06,433 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 00:50:06,433 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:50:06,433 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~b~0)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= ULTIMATE.start_main_~x~0 10)) (.cse3 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (.cse5 (<= ULTIMATE.start_main_~y~0 10))) (or (and .cse0 (= ULTIMATE.start_main_~p~0 0) .cse1 .cse2 .cse3 .cse4 .cse5) (and (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 (<= 0 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 .cse3 .cse4 .cse5))) [2021-10-13 00:50:06,433 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:50:06,433 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-10-13 00:50:06,433 INFO L860 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2021-10-13 00:50:06,433 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-13 00:50:06,433 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-13 00:50:06,433 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-13 00:50:06,434 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-13 00:50:06,434 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-13 00:50:06,434 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-10-13 00:50:06,434 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 00:50:06,434 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse16 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0))) (.cse17 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse6 (= ULTIMATE.start_main_~q~0 0)) (.cse7 (= ULTIMATE.start_main_~r~0 0)) (.cse8 (= ULTIMATE.start_main_~s~0 1)) (.cse11 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse12 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse14 (= ULTIMATE.start_main_~a~0 .cse17)) (.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= .cse16 .cse17)) (.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse5 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse15 (not (= ULTIMATE.start_main_~b~0 0))) (.cse9 (<= ULTIMATE.start_main_~x~0 10)) (.cse13 (<= 1 ULTIMATE.start_main_~x~0)) (.cse10 (<= ULTIMATE.start_main_~y~0 10))) (or (and (<= 1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse0 .cse1 .cse3 .cse4 .cse5 .cse6 .cse12 .cse7 .cse8 .cse9 .cse13 .cse14 .cse10 .cse11) (and (exists ((ULTIMATE.start_main_~k~0 Int)) (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0)) (+ ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~k~0)))) (= ULTIMATE.start_main_~k~0 0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse4 .cse5 .cse12 .cse15 .cse9 .cse13 .cse14 .cse10) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= .cse16 ULTIMATE.start_main_~a~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse2 .cse3 .cse4 .cse5 .cse15 .cse9 .cse13 .cse10)))) [2021-10-13 00:50:06,434 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2021-10-13 00:50:06,434 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 00:50:06,434 INFO L860 garLoopResultBuilder]: At program point L73(lines 18 74) the Hoare annotation is: true [2021-10-13 00:50:06,434 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-13 00:50:06,435 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-10-13 00:50:06,435 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-10-13 00:50:06,435 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-10-13 00:50:06,435 INFO L857 garLoopResultBuilder]: For program point L7-4(lines 7 9) no Hoare annotation was computed. [2021-10-13 00:50:06,435 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:50:06,435 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 00:50:06,435 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-13 00:50:06,435 INFO L853 garLoopResultBuilder]: At program point L41-1(lines 7 68) the Hoare annotation is: (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse2 (<= ULTIMATE.start_main_~x~0 10)) (.cse3 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (.cse5 (<= ULTIMATE.start_main_~y~0 10))) (or (and (exists ((ULTIMATE.start_main_~k~0 Int)) (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0)) (+ ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~k~0)))) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= ULTIMATE.start_main_~p~0 1) (<= 1 ULTIMATE.start_main_~b~0) .cse1 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-13 00:50:06,435 INFO L857 garLoopResultBuilder]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2021-10-13 00:50:06,435 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-13 00:50:06,435 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-10-13 00:50:06,435 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-10-13 00:50:06,435 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:50:06,436 INFO L857 garLoopResultBuilder]: For program point L8-8(line 8) no Hoare annotation was computed. [2021-10-13 00:50:06,436 INFO L857 garLoopResultBuilder]: For program point L8-10(line 8) no Hoare annotation was computed. [2021-10-13 00:50:06,436 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2021-10-13 00:50:06,436 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 00:50:06,440 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:50:06,458 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,459 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,459 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,462 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,462 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,462 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,468 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,469 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,469 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,470 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,470 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,470 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:50:06 BoogieIcfgContainer [2021-10-13 00:50:06,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:50:06,472 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:50:06,472 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:50:06,472 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:50:06,473 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:46:10" (3/4) ... [2021-10-13 00:50:06,476 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:50:06,488 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-13 00:50:06,488 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:50:06,489 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:50:06,489 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:50:06,515 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((\exists ULTIMATE.start_main_~k~0 : int :: s * y + q * x + r * y * ULTIMATE.start_main_~k~0 + p * x * ULTIMATE.start_main_~k~0 == b + a * ULTIMATE.start_main_~k~0) && b < a) && x * y == xy) && 1 <= cond) && 1 <= y) && yy == y * y) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10) || (((((((((((x * y == xy && p == 1) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10) && b == y) [2021-10-13 00:50:06,516 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((1 <= a && a == x) && x * y == xy) && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && q == 0) && r == 0) && s == 1) && x <= 10) && y <= 10) && b == y) || (((((((((((((x * y == xy && p == 1) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10) && b == y)) || (((((((((((((\exists ULTIMATE.start_main_~k~0 : int :: s * y + q * x + r * y * ULTIMATE.start_main_~k~0 + p * x * ULTIMATE.start_main_~k~0 == b + a * ULTIMATE.start_main_~k~0) && k == 0) && b < c) && x * y == xy) && 1 <= cond) && 1 <= y) && yy == y * y) && c == a) && !(b == 0)) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10)) || (((((((((((s * y + q * x == b && c + b * k == a) && b < a) && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && !(b == 0)) && x <= 10) && 1 <= x) && y <= 10) [2021-10-13 00:50:06,540 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:50:06,540 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:50:06,541 INFO L168 Benchmark]: Toolchain (without parser) took 236320.16 ms. Allocated memory was 125.8 MB in the beginning and 195.0 MB in the end (delta: 69.2 MB). Free memory was 86.2 MB in the beginning and 79.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 76.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:50:06,542 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 125.8 MB. Free memory is still 102.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:50:06,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.01 ms. Allocated memory is still 125.8 MB. Free memory was 86.0 MB in the beginning and 97.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:50:06,543 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.36 ms. Allocated memory is still 125.8 MB. Free memory was 97.8 MB in the beginning and 96.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:50:06,543 INFO L168 Benchmark]: Boogie Preprocessor took 24.80 ms. Allocated memory is still 125.8 MB. Free memory was 96.1 MB in the beginning and 94.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:50:06,543 INFO L168 Benchmark]: RCFGBuilder took 322.58 ms. Allocated memory is still 125.8 MB. Free memory was 94.6 MB in the beginning and 82.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:50:06,544 INFO L168 Benchmark]: TraceAbstraction took 235579.63 ms. Allocated memory was 125.8 MB in the beginning and 195.0 MB in the end (delta: 69.2 MB). Free memory was 82.4 MB in the beginning and 83.3 MB in the end (delta: -940.8 kB). Peak memory consumption was 117.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:50:06,544 INFO L168 Benchmark]: Witness Printer took 68.31 ms. Allocated memory is still 195.0 MB. Free memory was 83.3 MB in the beginning and 79.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:50:06,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 125.8 MB. Free memory is still 102.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.01 ms. Allocated memory is still 125.8 MB. Free memory was 86.0 MB in the beginning and 97.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.36 ms. Allocated memory is still 125.8 MB. Free memory was 97.8 MB in the beginning and 96.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.80 ms. Allocated memory is still 125.8 MB. Free memory was 96.1 MB in the beginning and 94.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 322.58 ms. Allocated memory is still 125.8 MB. Free memory was 94.6 MB in the beginning and 82.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 235579.63 ms. Allocated memory was 125.8 MB in the beginning and 195.0 MB in the end (delta: 69.2 MB). Free memory was 82.4 MB in the beginning and 83.3 MB in the end (delta: -940.8 kB). Peak memory consumption was 117.9 MB. Max. memory is 16.1 GB. * Witness Printer took 68.31 ms. Allocated memory is still 195.0 MB. Free memory was 83.3 MB in the beginning and 79.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 235445.6ms, OverallIterations: 24, TraceHistogramMax: 5, EmptinessCheckTime: 35.2ms, AutomataDifference: 104118.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 89451.8ms, InitialAbstractionConstructionTime: 11.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 767 SDtfs, 1519 SDslu, 2536 SDs, 0 SdLazy, 3923 SolverSat, 406 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 26389.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1013 GetRequests, 733 SyntacticMatches, 0 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 85633.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=13, InterpolantAutomatonStates: 241, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 457.2ms AutomataMinimizationTime, 24 MinimizatonAttempts, 498 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 55 NumberOfFragments, 889 HoareAnnotationTreeSize, 9 FomulaSimplifications, 555195 FormulaSimplificationTreeSizeReduction, 1405.8ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 117988 FormulaSimplificationTreeSizeReductionInter, 88036.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 198.9ms SsaConstructionTime, 2863.7ms SatisfiabilityAnalysisTime, 24643.8ms InterpolantComputationTime, 926 NumberOfCodeBlocks, 836 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 902 ConstructedInterpolants, 6 QuantifiedInterpolants, 10663 SizeOfPredicates, 295 NumberOfNonLiveVariables, 3576 ConjunctsInSsa, 694 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 272/549 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((1 <= y && 1 <= x) && a == r * y + p * x) && (((((((((s * y + q * x == b && b < a) && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && yy == y * y) && !(b == 0)) && x <= 10) && y <= 10) || ((((((((((x * y == xy && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && yy == y * y) && q == 0) && r == 0) && s == 1) && x <= 10) && y <= 10) && b == y)) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (1 <= x && ((((((((((((x * y == xy && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && q == 0) && r == 0) && s == 1) && x <= 10) && y <= 10) && b == y) || (((((((((s * y + q * x == b && b < a) && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && !(b == 0)) && x <= 10) && y <= 10))) && a == r * y + p * x - InvariantResult [Line: 47]: Loop Invariant [2021-10-13 00:50:06,558 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,558 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,558 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,560 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,560 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] Derived loop invariant: (((((((((((((((1 <= a && a == x) && x * y == xy) && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && q == 0) && r == 0) && s == 1) && x <= 10) && y <= 10) && b == y) || (((((((((((((x * y == xy && p == 1) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10) && b == y)) || (((((((((((((\exists ULTIMATE.start_main_~k~0 : int :: s * y + q * x + r * y * ULTIMATE.start_main_~k~0 + p * x * ULTIMATE.start_main_~k~0 == b + a * ULTIMATE.start_main_~k~0) && k == 0) && b < c) && x * y == xy) && 1 <= cond) && 1 <= y) && yy == y * y) && c == a) && !(b == 0)) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10)) || (((((((((((s * y + q * x == b && c + b * k == a) && b < a) && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && !(b == 0)) && x <= 10) && 1 <= x) && y <= 10) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((((((((((a == x && x * y == xy) && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && q == 0) && r == 0) && s == 1) && x <= 10) && y <= 10) && b == y) || ((((((((((s * y + q * x == b && c + b * k == a) && b < a) && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && !(b == 0)) && x <= 10) && y <= 10)) && 1 <= x - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((0 <= b && p == 0) && 1 <= y) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10) || (((((((b < a && 0 <= b) && 0 <= cond) && 1 <= y) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (1 <= x && ((((((((((((x * y == xy && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && q == 0) && r == 0) && s == 1) && x <= 10) && y <= 10) && b == y) || (((((((((s * y + q * x == b && b < a) && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && !(b == 0)) && x <= 10) && y <= 10))) && a == r * y + p * x - InvariantResult [Line: 7]: Loop Invariant [2021-10-13 00:50:06,564 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,564 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,564 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,565 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,565 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-13 00:50:06,565 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] Derived loop invariant: ((((((((((\exists ULTIMATE.start_main_~k~0 : int :: s * y + q * x + r * y * ULTIMATE.start_main_~k~0 + p * x * ULTIMATE.start_main_~k~0 == b + a * ULTIMATE.start_main_~k~0) && b < a) && x * y == xy) && 1 <= cond) && 1 <= y) && yy == y * y) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10) || (((((((((((x * y == xy && p == 1) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10) && b == y) RESULT: Ultimate proved your program to be correct! [2021-10-13 00:50:06,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b07947b-f28b-4e84-9f29-b510bfd9babd/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...