./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_compare_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_compare_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8 --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 d4cee1ffe184d6f720684150b88947bfbeafd0a7d6fa25fd546666420e94872c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:01:32,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:01:32,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:01:32,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:01:32,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:01:32,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:01:32,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:01:32,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:01:32,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:01:32,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:01:32,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:01:32,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:01:32,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:01:32,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:01:32,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:01:32,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:01:32,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:01:32,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:01:32,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:01:32,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:01:32,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:01:32,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:01:32,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:01:32,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:01:32,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:01:32,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:01:32,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:01:32,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:01:32,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:01:32,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:01:32,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:01:32,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:01:32,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:01:32,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:01:32,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:01:32,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:01:32,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:01:32,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:01:32,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:01:32,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:01:32,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:01:32,521 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:01:32,543 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:01:32,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:01:32,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:01:32,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:01:32,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:01:32,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:01:32,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:01:32,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:01:32,545 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:01:32,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:01:32,545 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:01:32,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:01:32,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:01:32,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:01:32,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:01:32,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:01:32,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:01:32,546 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:01:32,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:01:32,547 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:01:32,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:01:32,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:01:32,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:01:32,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:01:32,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:01:32,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:01:32,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:01:32,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:01:32,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:01:32,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:01:32,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:01:32,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:01:32,549 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:01:32,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:01:32,549 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:01:32,549 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4cee1ffe184d6f720684150b88947bfbeafd0a7d6fa25fd546666420e94872c [2022-12-13 20:01:32,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:01:32,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:01:32,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:01:32,748 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:01:32,749 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:01:32,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-examples/standard_compare_ground.i [2022-12-13 20:01:35,253 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:01:35,411 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:01:35,411 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/sv-benchmarks/c/array-examples/standard_compare_ground.i [2022-12-13 20:01:35,416 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/data/1821a4054/adad6051e3ba4434bee78ba5878934a5/FLAGdcf20230e [2022-12-13 20:01:35,846 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/data/1821a4054/adad6051e3ba4434bee78ba5878934a5 [2022-12-13 20:01:35,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:01:35,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:01:35,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:01:35,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:01:35,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:01:35,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:01:35" (1/1) ... [2022-12-13 20:01:35,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3536297f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:35, skipping insertion in model container [2022-12-13 20:01:35,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:01:35" (1/1) ... [2022-12-13 20:01:35,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:01:35,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:01:35,973 WARN L237 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_16d98988-40c6-4ca7-9310-15f134ece92c/sv-benchmarks/c/array-examples/standard_compare_ground.i[816,829] [2022-12-13 20:01:35,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:01:35,990 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:01:35,998 WARN L237 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_16d98988-40c6-4ca7-9310-15f134ece92c/sv-benchmarks/c/array-examples/standard_compare_ground.i[816,829] [2022-12-13 20:01:36,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:01:36,012 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:01:36,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:36 WrapperNode [2022-12-13 20:01:36,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:01:36,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:01:36,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:01:36,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:01:36,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:36" (1/1) ... [2022-12-13 20:01:36,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:36" (1/1) ... [2022-12-13 20:01:36,034 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-12-13 20:01:36,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:01:36,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:01:36,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:01:36,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:01:36,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:36" (1/1) ... [2022-12-13 20:01:36,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:36" (1/1) ... [2022-12-13 20:01:36,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:36" (1/1) ... [2022-12-13 20:01:36,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:36" (1/1) ... [2022-12-13 20:01:36,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:36" (1/1) ... [2022-12-13 20:01:36,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:36" (1/1) ... [2022-12-13 20:01:36,049 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:36" (1/1) ... [2022-12-13 20:01:36,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:36" (1/1) ... [2022-12-13 20:01:36,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:01:36,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:01:36,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:01:36,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:01:36,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:36" (1/1) ... [2022-12-13 20:01:36,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:01:36,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:36,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:01:36,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:01:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:01:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:01:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:01:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:01:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:01:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:01:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:01:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:01:36,161 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:01:36,162 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:01:36,268 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:01:36,273 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:01:36,273 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 20:01:36,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:01:36 BoogieIcfgContainer [2022-12-13 20:01:36,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:01:36,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:01:36,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:01:36,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:01:36,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:01:35" (1/3) ... [2022-12-13 20:01:36,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3684f95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:01:36, skipping insertion in model container [2022-12-13 20:01:36,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:36" (2/3) ... [2022-12-13 20:01:36,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3684f95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:01:36, skipping insertion in model container [2022-12-13 20:01:36,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:01:36" (3/3) ... [2022-12-13 20:01:36,281 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_compare_ground.i [2022-12-13 20:01:36,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:01:36,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:01:36,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:01:36,339 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@73a2f1b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:01:36,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 20:01:36,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 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) [2022-12-13 20:01:36,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 20:01:36,349 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:36,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:36,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:01:36,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:36,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2005121311, now seen corresponding path program 1 times [2022-12-13 20:01:36,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:36,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420030051] [2022-12-13 20:01:36,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:36,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:36,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:36,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420030051] [2022-12-13 20:01:36,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420030051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:36,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:36,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:01:36,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926627080] [2022-12-13 20:01:36,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:36,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:01:36,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:36,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:01:36,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:36,543 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:36,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:36,573 INFO L93 Difference]: Finished difference Result 36 states and 52 transitions. [2022-12-13 20:01:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:01:36,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 20:01:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:36,583 INFO L225 Difference]: With dead ends: 36 [2022-12-13 20:01:36,584 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 20:01:36,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:36,590 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:36,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 40 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 20:01:36,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-12-13 20:01:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-12-13 20:01:36,619 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2022-12-13 20:01:36,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:36,619 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-12-13 20:01:36,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:36,620 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-12-13 20:01:36,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 20:01:36,620 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:36,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:36,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:01:36,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:01:36,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:36,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1565815188, now seen corresponding path program 1 times [2022-12-13 20:01:36,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:36,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971019550] [2022-12-13 20:01:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:36,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:36,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:36,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971019550] [2022-12-13 20:01:36,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971019550] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:36,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607114286] [2022-12-13 20:01:36,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:36,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:36,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:36,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:36,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:01:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:36,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:01:36,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:01:36,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:01:36,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607114286] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:36,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:01:36,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-13 20:01:36,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028056157] [2022-12-13 20:01:36,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:36,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:01:36,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:36,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:01:36,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:01:36,811 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:36,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:36,824 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-12-13 20:01:36,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:01:36,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 20:01:36,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:36,825 INFO L225 Difference]: With dead ends: 26 [2022-12-13 20:01:36,825 INFO L226 Difference]: Without dead ends: 19 [2022-12-13 20:01:36,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:01:36,827 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:36,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:36,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-13 20:01:36,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-12-13 20:01:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 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) [2022-12-13 20:01:36,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-12-13 20:01:36,832 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2022-12-13 20:01:36,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:36,833 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-12-13 20:01:36,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:36,833 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-12-13 20:01:36,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 20:01:36,833 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:36,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:36,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:01:37,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:37,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:01:37,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:37,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1959146159, now seen corresponding path program 1 times [2022-12-13 20:01:37,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:37,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859147232] [2022-12-13 20:01:37,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:37,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:01:37,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:37,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859147232] [2022-12-13 20:01:37,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859147232] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:37,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680155648] [2022-12-13 20:01:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:37,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:37,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:37,209 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:37,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:01:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:01:37,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:01:37,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:01:37,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680155648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:37,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:01:37,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-13 20:01:37,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366263298] [2022-12-13 20:01:37,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:37,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:01:37,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:37,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:01:37,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:01:37,275 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:37,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:37,284 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-12-13 20:01:37,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:01:37,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-12-13 20:01:37,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:37,285 INFO L225 Difference]: With dead ends: 27 [2022-12-13 20:01:37,285 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 20:01:37,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:01:37,286 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:37,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 20:01:37,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-13 20:01:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-12-13 20:01:37,289 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2022-12-13 20:01:37,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:37,289 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-12-13 20:01:37,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:37,289 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-12-13 20:01:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 20:01:37,289 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:37,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:37,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:01:37,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:37,491 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:01:37,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:37,492 INFO L85 PathProgramCache]: Analyzing trace with hash -184138797, now seen corresponding path program 1 times [2022-12-13 20:01:37,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:37,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270333037] [2022-12-13 20:01:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:37,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:01:37,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:37,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270333037] [2022-12-13 20:01:37,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270333037] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:37,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197090008] [2022-12-13 20:01:37,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:37,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:37,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:37,638 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:37,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:01:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:01:37,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:01:37,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:01:37,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197090008] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:37,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:37,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 20:01:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971485553] [2022-12-13 20:01:37,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:37,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:01:37,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:37,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:01:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:01:37,734 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:37,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:37,754 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-12-13 20:01:37,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:01:37,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-13 20:01:37,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:37,755 INFO L225 Difference]: With dead ends: 35 [2022-12-13 20:01:37,755 INFO L226 Difference]: Without dead ends: 23 [2022-12-13 20:01:37,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:01:37,756 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:37,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 41 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:37,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-13 20:01:37,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-13 20:01:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-12-13 20:01:37,759 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2022-12-13 20:01:37,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:37,759 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-12-13 20:01:37,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:37,759 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-12-13 20:01:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 20:01:37,760 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:37,760 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:37,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:01:37,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:37,962 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:01:37,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:37,964 INFO L85 PathProgramCache]: Analyzing trace with hash -494561575, now seen corresponding path program 2 times [2022-12-13 20:01:37,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:37,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944150854] [2022-12-13 20:01:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:37,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 20:01:38,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:38,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944150854] [2022-12-13 20:01:38,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944150854] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:38,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966332109] [2022-12-13 20:01:38,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:01:38,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:38,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:38,138 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:38,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:01:38,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:01:38,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:01:38,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:01:38,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:01:38,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:01:38,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966332109] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:38,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:38,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-12-13 20:01:38,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193636986] [2022-12-13 20:01:38,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:38,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 20:01:38,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:38,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 20:01:38,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:01:38,309 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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) [2022-12-13 20:01:38,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:38,359 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2022-12-13 20:01:38,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:01:38,360 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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 20 [2022-12-13 20:01:38,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:38,360 INFO L225 Difference]: With dead ends: 52 [2022-12-13 20:01:38,360 INFO L226 Difference]: Without dead ends: 40 [2022-12-13 20:01:38,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:01:38,362 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:38,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 44 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:38,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-13 20:01:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2022-12-13 20:01:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 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) [2022-12-13 20:01:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-12-13 20:01:38,367 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 20 [2022-12-13 20:01:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:38,367 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-12-13 20:01:38,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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) [2022-12-13 20:01:38,368 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-12-13 20:01:38,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 20:01:38,368 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:38,368 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:38,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:01:38,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:38,570 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:01:38,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:38,571 INFO L85 PathProgramCache]: Analyzing trace with hash 451448930, now seen corresponding path program 3 times [2022-12-13 20:01:38,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:38,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021334228] [2022-12-13 20:01:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:38,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:01:38,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:38,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021334228] [2022-12-13 20:01:38,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021334228] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:38,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475500784] [2022-12-13 20:01:38,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:01:38,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:38,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:38,881 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:38,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:01:38,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 20:01:38,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:01:38,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:01:38,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 20:01:38,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 20:01:39,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475500784] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:39,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:39,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2022-12-13 20:01:39,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355785473] [2022-12-13 20:01:39,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:39,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 20:01:39,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:39,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 20:01:39,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-12-13 20:01:39,016 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:39,074 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2022-12-13 20:01:39,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 20:01:39,075 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-12-13 20:01:39,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:39,076 INFO L225 Difference]: With dead ends: 68 [2022-12-13 20:01:39,076 INFO L226 Difference]: Without dead ends: 53 [2022-12-13 20:01:39,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-12-13 20:01:39,077 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:39,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 82 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-13 20:01:39,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2022-12-13 20:01:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:39,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2022-12-13 20:01:39,082 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 35 [2022-12-13 20:01:39,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:39,082 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2022-12-13 20:01:39,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:39,083 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2022-12-13 20:01:39,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 20:01:39,083 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:39,083 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:39,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:01:39,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:39,285 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:01:39,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:39,287 INFO L85 PathProgramCache]: Analyzing trace with hash 678799712, now seen corresponding path program 4 times [2022-12-13 20:01:39,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:39,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664313989] [2022-12-13 20:01:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:39,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 20:01:39,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:39,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664313989] [2022-12-13 20:01:39,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664313989] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:39,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563424579] [2022-12-13 20:01:39,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 20:01:39,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:39,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:39,619 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:39,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:01:39,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 20:01:39,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:01:39,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 20:01:39,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 20:01:39,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 20:01:39,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563424579] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:39,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:39,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-12-13 20:01:39,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787236834] [2022-12-13 20:01:39,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:39,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 20:01:39,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 20:01:39,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2022-12-13 20:01:39,922 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 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) [2022-12-13 20:01:39,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:39,984 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2022-12-13 20:01:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 20:01:39,985 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 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 49 [2022-12-13 20:01:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:39,986 INFO L225 Difference]: With dead ends: 105 [2022-12-13 20:01:39,986 INFO L226 Difference]: Without dead ends: 78 [2022-12-13 20:01:39,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2022-12-13 20:01:39,988 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:39,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 67 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:39,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-12-13 20:01:39,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-12-13 20:01:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2022-12-13 20:01:39,993 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 49 [2022-12-13 20:01:39,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:39,993 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2022-12-13 20:01:39,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 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) [2022-12-13 20:01:39,993 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2022-12-13 20:01:39,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 20:01:39,994 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:39,994 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:39,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:01:40,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 20:01:40,196 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:01:40,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:40,197 INFO L85 PathProgramCache]: Analyzing trace with hash -408162682, now seen corresponding path program 5 times [2022-12-13 20:01:40,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:40,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698289180] [2022-12-13 20:01:40,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:40,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 20:01:40,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:40,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698289180] [2022-12-13 20:01:40,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698289180] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:40,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760892240] [2022-12-13 20:01:40,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 20:01:40,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:40,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:40,746 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:40,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:03:32,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2022-12-13 20:03:32,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:03:32,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 20:03:32,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 20:03:32,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:03:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 20:03:33,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760892240] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:03:33,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:03:33,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2022-12-13 20:03:33,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212684765] [2022-12-13 20:03:33,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:03:33,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-13 20:03:33,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:33,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-13 20:03:33,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 20:03:33,460 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:33,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:33,600 INFO L93 Difference]: Finished difference Result 157 states and 186 transitions. [2022-12-13 20:03:33,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 20:03:33,600 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-12-13 20:03:33,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:33,602 INFO L225 Difference]: With dead ends: 157 [2022-12-13 20:03:33,602 INFO L226 Difference]: Without dead ends: 130 [2022-12-13 20:03:33,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 20:03:33,604 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:33,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:03:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-12-13 20:03:33,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-12-13 20:03:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.0232558139534884) internal successors, (132), 129 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2022-12-13 20:03:33,611 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 75 [2022-12-13 20:03:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:33,612 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2022-12-13 20:03:33,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2022-12-13 20:03:33,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-13 20:03:33,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:33,614 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:33,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:03:33,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 20:03:33,814 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:33,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:33,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1135775314, now seen corresponding path program 6 times [2022-12-13 20:03:33,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:33,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490647632] [2022-12-13 20:03:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:33,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 20:03:35,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:35,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490647632] [2022-12-13 20:03:35,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490647632] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:03:35,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733522223] [2022-12-13 20:03:35,613 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 20:03:35,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:35,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:35,614 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:03:35,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:03:35,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-12-13 20:03:35,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:03:35,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 20:03:35,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2022-12-13 20:03:36,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:03:36,511 INFO L321 Elim1Store]: treesize reduction 30, result has 58.9 percent of original size [2022-12-13 20:03:36,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-12-13 20:03:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2022-12-13 20:03:36,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733522223] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:03:36,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:03:36,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 8, 7] total 64 [2022-12-13 20:03:36,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4886963] [2022-12-13 20:03:36,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:03:36,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-13 20:03:36,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:36,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-13 20:03:36,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1413, Invalid=2619, Unknown=0, NotChecked=0, Total=4032 [2022-12-13 20:03:36,577 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand has 64 states, 64 states have (on average 2.1875) internal successors, (140), 64 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:38,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:38,232 INFO L93 Difference]: Finished difference Result 165 states and 170 transitions. [2022-12-13 20:03:38,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-13 20:03:38,232 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.1875) internal successors, (140), 64 states have internal predecessors, (140), 0 states have call successors, (0), 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 127 [2022-12-13 20:03:38,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:38,234 INFO L225 Difference]: With dead ends: 165 [2022-12-13 20:03:38,234 INFO L226 Difference]: Without dead ends: 138 [2022-12-13 20:03:38,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2176 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4219, Invalid=10301, Unknown=0, NotChecked=0, Total=14520 [2022-12-13 20:03:38,238 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 55 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:38,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 58 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:03:38,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-13 20:03:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2022-12-13 20:03:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.0225563909774436) internal successors, (136), 133 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2022-12-13 20:03:38,245 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 127 [2022-12-13 20:03:38,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:38,246 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2022-12-13 20:03:38,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.1875) internal successors, (140), 64 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:38,246 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2022-12-13 20:03:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-13 20:03:38,247 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:38,247 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:38,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 20:03:38,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:38,449 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:38,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:38,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2019846662, now seen corresponding path program 1 times [2022-12-13 20:03:38,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:38,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684303861] [2022-12-13 20:03:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:38,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2654 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-13 20:03:40,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:40,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684303861] [2022-12-13 20:03:40,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684303861] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:03:40,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283119013] [2022-12-13 20:03:40,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:40,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:40,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:40,054 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:03:40,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 20:03:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:40,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-13 20:03:40,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2654 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-13 20:03:40,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:03:42,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2654 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-13 20:03:42,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283119013] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:03:42,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:03:42,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2022-12-13 20:03:42,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519830609] [2022-12-13 20:03:42,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:03:42,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-12-13 20:03:42,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:42,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-12-13 20:03:42,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2022-12-13 20:03:42,227 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand has 107 states, 107 states have (on average 2.0934579439252334) internal successors, (224), 107 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:42,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:42,547 INFO L93 Difference]: Finished difference Result 269 states and 325 transitions. [2022-12-13 20:03:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-12-13 20:03:42,548 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0934579439252334) internal successors, (224), 107 states have internal predecessors, (224), 0 states have call successors, (0), 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 133 [2022-12-13 20:03:42,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:42,549 INFO L225 Difference]: With dead ends: 269 [2022-12-13 20:03:42,549 INFO L226 Difference]: Without dead ends: 240 [2022-12-13 20:03:42,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2022-12-13 20:03:42,552 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:42,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 106 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:03:42,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-12-13 20:03:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-12-13 20:03:42,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.0125523012552302) internal successors, (242), 239 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 242 transitions. [2022-12-13 20:03:42,568 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 242 transitions. Word has length 133 [2022-12-13 20:03:42,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:42,568 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 242 transitions. [2022-12-13 20:03:42,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.0934579439252334) internal successors, (224), 107 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:42,569 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 242 transitions. [2022-12-13 20:03:42,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-12-13 20:03:42,572 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:42,572 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:42,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 20:03:42,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 20:03:42,773 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:42,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:42,774 INFO L85 PathProgramCache]: Analyzing trace with hash -651492388, now seen corresponding path program 2 times [2022-12-13 20:03:42,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:42,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471686967] [2022-12-13 20:03:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:42,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10869 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-13 20:03:48,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:48,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471686967] [2022-12-13 20:03:48,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471686967] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:03:48,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697085346] [2022-12-13 20:03:48,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:03:48,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:48,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:48,020 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:03:48,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 20:03:48,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:03:48,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:03:48,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 1903 conjuncts, 106 conjunts are in the unsatisfiable core [2022-12-13 20:03:48,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10869 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-13 20:03:48,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:03:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10869 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-13 20:03:55,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697085346] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:03:55,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:03:55,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107, 107] total 213 [2022-12-13 20:03:55,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408738828] [2022-12-13 20:03:55,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:03:55,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 213 states [2022-12-13 20:03:55,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:55,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2022-12-13 20:03:55,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2022-12-13 20:03:55,428 INFO L87 Difference]: Start difference. First operand 240 states and 242 transitions. Second operand has 213 states, 213 states have (on average 2.0469483568075115) internal successors, (436), 213 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:56,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:56,356 INFO L93 Difference]: Finished difference Result 481 states and 590 transitions. [2022-12-13 20:03:56,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2022-12-13 20:03:56,357 INFO L78 Accepts]: Start accepts. Automaton has has 213 states, 213 states have (on average 2.0469483568075115) internal successors, (436), 213 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2022-12-13 20:03:56,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:56,360 INFO L225 Difference]: With dead ends: 481 [2022-12-13 20:03:56,360 INFO L226 Difference]: Without dead ends: 452 [2022-12-13 20:03:56,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2022-12-13 20:03:56,363 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:56,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 67 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 20:03:56,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-12-13 20:03:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2022-12-13 20:03:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 1.0066518847006651) internal successors, (454), 451 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 454 transitions. [2022-12-13 20:03:56,376 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 454 transitions. Word has length 239 [2022-12-13 20:03:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:56,376 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 454 transitions. [2022-12-13 20:03:56,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 213 states, 213 states have (on average 2.0469483568075115) internal successors, (436), 213 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:56,377 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 454 transitions. [2022-12-13 20:03:56,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-12-13 20:03:56,382 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:56,382 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:56,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 20:03:56,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:56,584 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:56,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:56,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1634761464, now seen corresponding path program 3 times [2022-12-13 20:03:56,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:56,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554717971] [2022-12-13 20:03:56,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:56,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 44153 backedges. 0 proven. 44100 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-13 20:04:18,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:18,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554717971] [2022-12-13 20:04:18,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554717971] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:04:18,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781908573] [2022-12-13 20:04:18,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:04:18,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:18,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:04:18,546 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:04:18,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 20:04:18,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 20:04:18,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:04:18,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 20:04:18,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:04:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 44153 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 44126 trivial. 0 not checked. [2022-12-13 20:04:20,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:04:21,124 INFO L321 Elim1Store]: treesize reduction 30, result has 61.0 percent of original size [2022-12-13 20:04:21,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 54 [2022-12-13 20:04:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 44153 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 44126 trivial. 0 not checked. [2022-12-13 20:04:21,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781908573] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:04:21,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:04:21,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [213, 11, 10] total 230 [2022-12-13 20:04:21,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93618498] [2022-12-13 20:04:21,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:04:21,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 230 states [2022-12-13 20:04:21,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:21,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2022-12-13 20:04:21,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22642, Invalid=30028, Unknown=0, NotChecked=0, Total=52670 [2022-12-13 20:04:21,261 INFO L87 Difference]: Start difference. First operand 452 states and 454 transitions. Second operand has 230 states, 230 states have (on average 2.0739130434782607) internal successors, (477), 230 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:04:38,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:38,492 INFO L93 Difference]: Finished difference Result 491 states and 496 transitions. [2022-12-13 20:04:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2022-12-13 20:04:38,492 INFO L78 Accepts]: Start accepts. Automaton has has 230 states, 230 states have (on average 2.0739130434782607) internal successors, (477), 230 states have internal predecessors, (477), 0 states have call successors, (0), 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 451 [2022-12-13 20:04:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:38,496 INFO L225 Difference]: With dead ends: 491 [2022-12-13 20:04:38,496 INFO L226 Difference]: Without dead ends: 462 [2022-12-13 20:04:38,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1331 GetRequests, 885 SyntacticMatches, 0 SemanticMatches, 446 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27960 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=67863, Invalid=132393, Unknown=0, NotChecked=0, Total=200256 [2022-12-13 20:04:38,505 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 48 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:38,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 146 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 20:04:38,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-12-13 20:04:38,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 458. [2022-12-13 20:04:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.0065645514223194) internal successors, (460), 457 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:04:38,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 460 transitions. [2022-12-13 20:04:38,524 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 460 transitions. Word has length 451 [2022-12-13 20:04:38,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:38,524 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 460 transitions. [2022-12-13 20:04:38,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 230 states, 230 states have (on average 2.0739130434782607) internal successors, (477), 230 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:04:38,525 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 460 transitions. [2022-12-13 20:04:38,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-12-13 20:04:38,530 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:38,530 INFO L195 NwaCegarLoop]: trace histogram [211, 211, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:04:38,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 20:04:38,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:38,732 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:38,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:38,733 INFO L85 PathProgramCache]: Analyzing trace with hash 792090300, now seen corresponding path program 4 times [2022-12-13 20:04:38,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:38,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001789196] [2022-12-13 20:04:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:38,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:01,856 INFO L134 CoverageAnalysis]: Checked inductivity of 44580 backedges. 0 proven. 44521 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-13 20:05:01,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:05:01,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001789196] [2022-12-13 20:05:01,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001789196] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:05:01,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388726270] [2022-12-13 20:05:01,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 20:05:01,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:05:01,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:05:01,857 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:05:01,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 20:05:02,545 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 20:05:02,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:05:02,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 3735 conjuncts, 213 conjunts are in the unsatisfiable core [2022-12-13 20:05:02,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:05:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 44580 backedges. 0 proven. 44521 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-13 20:05:02,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:05:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 44580 backedges. 0 proven. 44521 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-13 20:05:34,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388726270] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:05:34,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:05:34,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214, 214] total 427 [2022-12-13 20:05:34,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610057417] [2022-12-13 20:05:34,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:05:34,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 427 states [2022-12-13 20:05:34,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:05:34,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 427 interpolants. [2022-12-13 20:05:34,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90951, Invalid=90951, Unknown=0, NotChecked=0, Total=181902 [2022-12-13 20:05:34,897 INFO L87 Difference]: Start difference. First operand 458 states and 460 transitions. Second operand has 427 states, 427 states have (on average 2.0234192037470726) internal successors, (864), 427 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:05:39,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:05:39,628 INFO L93 Difference]: Finished difference Result 917 states and 1133 transitions. [2022-12-13 20:05:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 426 states. [2022-12-13 20:05:39,629 INFO L78 Accepts]: Start accepts. Automaton has has 427 states, 427 states have (on average 2.0234192037470726) internal successors, (864), 427 states have internal predecessors, (864), 0 states have call successors, (0), 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 457 [2022-12-13 20:05:39,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:05:39,634 INFO L225 Difference]: With dead ends: 917 [2022-12-13 20:05:39,634 INFO L226 Difference]: Without dead ends: 884 [2022-12-13 20:05:39,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 425 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 42.4s TimeCoverageRelationStatistics Valid=90951, Invalid=90951, Unknown=0, NotChecked=0, Total=181902 [2022-12-13 20:05:39,642 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:05:39,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 67 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 20:05:39,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-12-13 20:05:39,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 884. [2022-12-13 20:05:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 1.0033975084937712) internal successors, (886), 883 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:05:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 886 transitions. [2022-12-13 20:05:39,671 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 886 transitions. Word has length 457 [2022-12-13 20:05:39,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:05:39,671 INFO L495 AbstractCegarLoop]: Abstraction has 884 states and 886 transitions. [2022-12-13 20:05:39,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 427 states, 427 states have (on average 2.0234192037470726) internal successors, (864), 427 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:05:39,672 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 886 transitions. [2022-12-13 20:05:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2022-12-13 20:05:39,677 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:05:39,677 INFO L195 NwaCegarLoop]: trace histogram [424, 424, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:05:39,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 20:05:39,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 20:05:39,878 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:05:39,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:05:39,879 INFO L85 PathProgramCache]: Analyzing trace with hash -341191598, now seen corresponding path program 5 times [2022-12-13 20:05:39,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:05:39,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749730078] [2022-12-13 20:05:39,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:39,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:05:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:07:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 179835 backedges. 0 proven. 179776 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-13 20:07:31,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:07:31,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749730078] [2022-12-13 20:07:31,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749730078] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:07:31,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417660986] [2022-12-13 20:07:31,774 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 20:07:31,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:07:31,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:07:31,775 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:07:31,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d98988-40c6-4ca7-9310-15f134ece92c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process