./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro --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 ba1a5c8c8cff607fde50280cfe0e0975858a4c6ed38f8443d26bb1773b66a31d --- 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-8393723 [2022-11-18 19:51:04,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:51:04,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:51:04,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:51:04,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:51:04,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:51:04,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:51:04,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:51:04,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:51:04,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:51:04,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:51:04,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:51:04,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:51:04,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:51:04,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:51:04,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:51:04,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:51:04,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:51:04,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:51:04,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:51:04,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:51:04,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:51:04,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:51:04,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:51:04,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:51:04,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:51:04,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:51:04,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:51:04,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:51:04,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:51:04,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:51:04,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:51:04,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:51:04,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:51:04,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:51:04,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:51:04,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:51:04,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:51:04,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:51:04,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:51:04,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:51:04,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:51:04,469 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:51:04,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:51:04,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:51:04,470 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:51:04,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:51:04,471 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:51:04,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:51:04,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:51:04,472 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:51:04,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:51:04,478 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:51:04,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:51:04,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:51:04,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:51:04,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:51:04,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:51:04,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:51:04,479 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:51:04,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:51:04,480 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:51:04,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:51:04,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:51:04,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:51:04,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:51:04,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:51:04,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:51:04,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:51:04,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:51:04,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:51:04,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:51:04,483 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:51:04,483 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:51:04,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:51:04,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba1a5c8c8cff607fde50280cfe0e0975858a4c6ed38f8443d26bb1773b66a31d [2022-11-18 19:51:04,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:51:04,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:51:04,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:51:04,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:51:04,848 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:51:04,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/forester-heap/sll-01-1.i [2022-11-18 19:51:04,948 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/data/9d6c665e0/03dd9dfb6a774f718902b9b602d7c07d/FLAGd8d2bf6f4 [2022-11-18 19:51:05,620 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:51:05,621 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i [2022-11-18 19:51:05,633 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/data/9d6c665e0/03dd9dfb6a774f718902b9b602d7c07d/FLAGd8d2bf6f4 [2022-11-18 19:51:05,827 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/data/9d6c665e0/03dd9dfb6a774f718902b9b602d7c07d [2022-11-18 19:51:05,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:51:05,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:51:05,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:51:05,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:51:05,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:51:05,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:51:05" (1/1) ... [2022-11-18 19:51:05,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d770817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:05, skipping insertion in model container [2022-11-18 19:51:05,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:51:05" (1/1) ... [2022-11-18 19:51:05,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:51:05,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:51:06,402 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[22034,22047] [2022-11-18 19:51:06,422 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[22307,22320] [2022-11-18 19:51:06,426 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[22516,22529] [2022-11-18 19:51:06,428 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[22586,22599] [2022-11-18 19:51:06,437 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[22853,22866] [2022-11-18 19:51:06,439 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[22961,22974] [2022-11-18 19:51:06,445 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23192,23205] [2022-11-18 19:51:06,447 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23272,23285] [2022-11-18 19:51:06,449 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23351,23364] [2022-11-18 19:51:06,453 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23441,23454] [2022-11-18 19:51:06,458 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23619,23632] [2022-11-18 19:51:06,460 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23697,23710] [2022-11-18 19:51:06,461 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23774,23787] [2022-11-18 19:51:06,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:51:06,485 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:51:06,526 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[22034,22047] [2022-11-18 19:51:06,537 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[22307,22320] [2022-11-18 19:51:06,544 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[22516,22529] [2022-11-18 19:51:06,545 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[22586,22599] [2022-11-18 19:51:06,553 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[22853,22866] [2022-11-18 19:51:06,555 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[22961,22974] [2022-11-18 19:51:06,560 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23192,23205] [2022-11-18 19:51:06,566 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23272,23285] [2022-11-18 19:51:06,568 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23351,23364] [2022-11-18 19:51:06,569 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23441,23454] [2022-11-18 19:51:06,576 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23619,23632] [2022-11-18 19:51:06,578 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23697,23710] [2022-11-18 19:51:06,579 WARN L234 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_dff379a1-6e3e-4081-bc66-16137fef3df0/sv-benchmarks/c/forester-heap/sll-01-1.i[23774,23787] [2022-11-18 19:51:06,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:51:06,620 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:51:06,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:06 WrapperNode [2022-11-18 19:51:06,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:51:06,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:51:06,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:51:06,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:51:06,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:06" (1/1) ... [2022-11-18 19:51:06,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:06" (1/1) ... [2022-11-18 19:51:06,718 INFO L138 Inliner]: procedures = 119, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 221 [2022-11-18 19:51:06,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:51:06,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:51:06,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:51:06,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:51:06,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:06" (1/1) ... [2022-11-18 19:51:06,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:06" (1/1) ... [2022-11-18 19:51:06,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:06" (1/1) ... [2022-11-18 19:51:06,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:06" (1/1) ... [2022-11-18 19:51:06,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:06" (1/1) ... [2022-11-18 19:51:06,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:06" (1/1) ... [2022-11-18 19:51:06,785 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:06" (1/1) ... [2022-11-18 19:51:06,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:06" (1/1) ... [2022-11-18 19:51:06,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:51:06,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:51:06,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:51:06,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:51:06,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:06" (1/1) ... [2022-11-18 19:51:06,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:51:06,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:06,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:51:06,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:51:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:51:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:51:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:51:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:51:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:51:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:51:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:51:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:51:07,019 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:51:07,022 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:51:07,566 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:51:07,574 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:51:07,575 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2022-11-18 19:51:07,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:51:07 BoogieIcfgContainer [2022-11-18 19:51:07,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:51:07,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:51:07,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:51:07,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:51:07,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:51:05" (1/3) ... [2022-11-18 19:51:07,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415ce176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:51:07, skipping insertion in model container [2022-11-18 19:51:07,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:06" (2/3) ... [2022-11-18 19:51:07,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415ce176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:51:07, skipping insertion in model container [2022-11-18 19:51:07,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:51:07" (3/3) ... [2022-11-18 19:51:07,595 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-01-1.i [2022-11-18 19:51:07,621 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:51:07,621 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-18 19:51:07,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:51:07,708 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;@6b9e7dab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:51:07,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-18 19:51:07,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 69 states have (on average 1.9565217391304348) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 19:51:07,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:07,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 19:51:07,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:07,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:07,727 INFO L85 PathProgramCache]: Analyzing trace with hash 925700, now seen corresponding path program 1 times [2022-11-18 19:51:07,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:07,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263533257] [2022-11-18 19:51:07,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:07,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:08,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:08,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263533257] [2022-11-18 19:51:08,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263533257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:08,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:08,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:08,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915625977] [2022-11-18 19:51:08,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:08,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:08,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:08,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:08,091 INFO L87 Difference]: Start difference. First operand has 83 states, 69 states have (on average 1.9565217391304348) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:08,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:08,222 INFO L93 Difference]: Finished difference Result 180 states and 296 transitions. [2022-11-18 19:51:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:08,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-18 19:51:08,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:08,237 INFO L225 Difference]: With dead ends: 180 [2022-11-18 19:51:08,237 INFO L226 Difference]: Without dead ends: 95 [2022-11-18 19:51:08,240 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 [2022-11-18 19:51:08,245 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 83 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:08,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 102 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:08,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-18 19:51:08,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2022-11-18 19:51:08,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.323076923076923) internal successors, (86), 76 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2022-11-18 19:51:08,350 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 4 [2022-11-18 19:51:08,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:08,350 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2022-11-18 19:51:08,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:08,351 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2022-11-18 19:51:08,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:51:08,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:08,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:08,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:51:08,355 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:08,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:08,358 INFO L85 PathProgramCache]: Analyzing trace with hash 261454926, now seen corresponding path program 1 times [2022-11-18 19:51:08,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:08,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496810740] [2022-11-18 19:51:08,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:08,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:08,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:08,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496810740] [2022-11-18 19:51:08,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496810740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:08,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:08,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:08,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595168253] [2022-11-18 19:51:08,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:08,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:08,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:08,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:08,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:08,466 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:08,488 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2022-11-18 19:51:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:08,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 19:51:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:08,490 INFO L225 Difference]: With dead ends: 80 [2022-11-18 19:51:08,490 INFO L226 Difference]: Without dead ends: 78 [2022-11-18 19:51:08,491 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 [2022-11-18 19:51:08,494 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 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 [2022-11-18 19:51:08,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:08,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-18 19:51:08,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-18 19:51:08,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 77 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:08,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-11-18 19:51:08,516 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 10 [2022-11-18 19:51:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:08,517 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-11-18 19:51:08,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-11-18 19:51:08,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:51:08,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:08,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:08,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:51:08,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:08,528 INFO L85 PathProgramCache]: Analyzing trace with hash 261456848, now seen corresponding path program 1 times [2022-11-18 19:51:08,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:08,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259610653] [2022-11-18 19:51:08,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:08,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:08,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:08,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259610653] [2022-11-18 19:51:08,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259610653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:08,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:08,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:51:08,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045961221] [2022-11-18 19:51:08,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:08,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:51:08,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:08,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:51:08,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:08,867 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:09,001 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2022-11-18 19:51:09,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:51:09,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 19:51:09,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:09,002 INFO L225 Difference]: With dead ends: 79 [2022-11-18 19:51:09,003 INFO L226 Difference]: Without dead ends: 77 [2022-11-18 19:51:09,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:09,004 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:09,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 219 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:09,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-18 19:51:09,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-11-18 19:51:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 64 states have (on average 1.3125) internal successors, (84), 74 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2022-11-18 19:51:09,014 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 10 [2022-11-18 19:51:09,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:09,014 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2022-11-18 19:51:09,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,015 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2022-11-18 19:51:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:51:09,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:09,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:09,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:51:09,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:09,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:09,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1712619113, now seen corresponding path program 1 times [2022-11-18 19:51:09,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:09,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430926888] [2022-11-18 19:51:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:09,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:09,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430926888] [2022-11-18 19:51:09,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430926888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:09,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:09,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:09,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952070400] [2022-11-18 19:51:09,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:09,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:09,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:09,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:09,137 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:09,214 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2022-11-18 19:51:09,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:09,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-11-18 19:51:09,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:09,215 INFO L225 Difference]: With dead ends: 78 [2022-11-18 19:51:09,216 INFO L226 Difference]: Without dead ends: 74 [2022-11-18 19:51:09,216 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 [2022-11-18 19:51:09,217 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 16 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:09,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 125 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-18 19:51:09,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-11-18 19:51:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 70 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) [2022-11-18 19:51:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2022-11-18 19:51:09,226 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 15 [2022-11-18 19:51:09,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:09,227 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2022-11-18 19:51:09,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,227 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2022-11-18 19:51:09,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:51:09,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:09,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:09,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:51:09,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:09,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:09,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1551589151, now seen corresponding path program 1 times [2022-11-18 19:51:09,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:09,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609293347] [2022-11-18 19:51:09,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:09,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:09,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:09,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609293347] [2022-11-18 19:51:09,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609293347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:09,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:09,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:51:09,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958156958] [2022-11-18 19:51:09,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:09,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:51:09,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:09,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:51:09,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:09,397 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:09,518 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2022-11-18 19:51:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:51:09,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:51:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:09,520 INFO L225 Difference]: With dead ends: 187 [2022-11-18 19:51:09,521 INFO L226 Difference]: Without dead ends: 124 [2022-11-18 19:51:09,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:51:09,522 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 56 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:09,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 187 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:09,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-18 19:51:09,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 73. [2022-11-18 19:51:09,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.28125) internal successors, (82), 72 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2022-11-18 19:51:09,534 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 16 [2022-11-18 19:51:09,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:09,534 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2022-11-18 19:51:09,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2022-11-18 19:51:09,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:51:09,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:09,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:09,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:51:09,536 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:09,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:09,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2063319775, now seen corresponding path program 1 times [2022-11-18 19:51:09,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:09,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050785863] [2022-11-18 19:51:09,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:09,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:09,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:09,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050785863] [2022-11-18 19:51:09,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050785863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:09,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:09,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:51:09,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191585002] [2022-11-18 19:51:09,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:09,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:51:09,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:09,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:51:09,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:09,596 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:09,685 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2022-11-18 19:51:09,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:51:09,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:51:09,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:09,687 INFO L225 Difference]: With dead ends: 132 [2022-11-18 19:51:09,687 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 19:51:09,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:51:09,689 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 131 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:09,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 116 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:09,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 19:51:09,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 72. [2022-11-18 19:51:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 1.265625) internal successors, (81), 71 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2022-11-18 19:51:09,701 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 16 [2022-11-18 19:51:09,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:09,702 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2022-11-18 19:51:09,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2022-11-18 19:51:09,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 19:51:09,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:09,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:09,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:51:09,705 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:09,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:09,706 INFO L85 PathProgramCache]: Analyzing trace with hash -940628212, now seen corresponding path program 1 times [2022-11-18 19:51:09,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:09,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866865426] [2022-11-18 19:51:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:09,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:09,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:09,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866865426] [2022-11-18 19:51:09,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866865426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:09,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:09,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:09,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673350461] [2022-11-18 19:51:09,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:09,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:09,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:09,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:09,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:09,776 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2022-11-18 19:51:09,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:09,799 INFO L93 Difference]: Finished difference Result 137 states and 155 transitions. [2022-11-18 19:51:09,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:09,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 19:51:09,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:09,802 INFO L225 Difference]: With dead ends: 137 [2022-11-18 19:51:09,802 INFO L226 Difference]: Without dead ends: 96 [2022-11-18 19:51:09,804 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 [2022-11-18 19:51:09,805 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 24 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:09,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 149 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-18 19:51:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2022-11-18 19:51:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 74 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2022-11-18 19:51:09,837 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2022-11-18 19:51:09,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:09,837 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2022-11-18 19:51:09,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2022-11-18 19:51:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2022-11-18 19:51:09,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 19:51:09,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:09,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:09,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:51:09,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:09,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:09,842 INFO L85 PathProgramCache]: Analyzing trace with hash 905291998, now seen corresponding path program 1 times [2022-11-18 19:51:09,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:09,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879348090] [2022-11-18 19:51:09,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:09,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:09,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:09,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879348090] [2022-11-18 19:51:09,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879348090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:09,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:09,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:09,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579763521] [2022-11-18 19:51:09,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:09,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:09,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:09,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:09,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:09,928 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2022-11-18 19:51:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:09,979 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2022-11-18 19:51:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:09,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 19:51:09,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:09,981 INFO L225 Difference]: With dead ends: 75 [2022-11-18 19:51:09,981 INFO L226 Difference]: Without dead ends: 73 [2022-11-18 19:51:09,981 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 [2022-11-18 19:51:09,982 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 13 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:09,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 129 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:09,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-18 19:51:09,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-18 19:51:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-11-18 19:51:09,995 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 21 [2022-11-18 19:51:09,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:09,996 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-11-18 19:51:09,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2022-11-18 19:51:09,996 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-11-18 19:51:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:09,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:09,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:09,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:51:09,998 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:09,999 INFO L85 PathProgramCache]: Analyzing trace with hash 886650935, now seen corresponding path program 1 times [2022-11-18 19:51:10,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:10,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478001370] [2022-11-18 19:51:10,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:10,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:10,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:10,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478001370] [2022-11-18 19:51:10,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478001370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:10,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:10,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:51:10,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277017866] [2022-11-18 19:51:10,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:10,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:51:10,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:51:10,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:10,244 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:10,356 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2022-11-18 19:51:10,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:51:10,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-11-18 19:51:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:10,358 INFO L225 Difference]: With dead ends: 74 [2022-11-18 19:51:10,358 INFO L226 Difference]: Without dead ends: 72 [2022-11-18 19:51:10,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:10,361 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:10,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:10,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-18 19:51:10,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2022-11-18 19:51:10,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 70 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2022-11-18 19:51:10,376 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 23 [2022-11-18 19:51:10,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:10,380 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2022-11-18 19:51:10,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:10,381 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2022-11-18 19:51:10,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 19:51:10,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:10,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:10,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:51:10,385 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:10,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:10,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1458355201, now seen corresponding path program 1 times [2022-11-18 19:51:10,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:10,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889727448] [2022-11-18 19:51:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:10,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:10,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:10,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889727448] [2022-11-18 19:51:10,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889727448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:10,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:10,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:51:10,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373429542] [2022-11-18 19:51:10,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:10,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:51:10,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:10,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:51:10,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:51:10,605 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:10,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:10,889 INFO L93 Difference]: Finished difference Result 175 states and 199 transitions. [2022-11-18 19:51:10,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:51:10,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 19:51:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:10,892 INFO L225 Difference]: With dead ends: 175 [2022-11-18 19:51:10,892 INFO L226 Difference]: Without dead ends: 133 [2022-11-18 19:51:10,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:51:10,893 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 120 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:10,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 281 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:51:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-18 19:51:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 81. [2022-11-18 19:51:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 80 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:10,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2022-11-18 19:51:10,906 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 24 [2022-11-18 19:51:10,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:10,907 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2022-11-18 19:51:10,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:10,907 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2022-11-18 19:51:10,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 19:51:10,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:10,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:10,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:51:10,909 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:10,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:10,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1357759361, now seen corresponding path program 1 times [2022-11-18 19:51:10,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:10,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078475560] [2022-11-18 19:51:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:10,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:14,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:14,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078475560] [2022-11-18 19:51:14,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078475560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:14,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:14,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:51:14,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442323813] [2022-11-18 19:51:14,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:14,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:51:14,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:14,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:51:14,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:51:14,057 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:14,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:14,649 INFO L93 Difference]: Finished difference Result 234 states and 259 transitions. [2022-11-18 19:51:14,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:51:14,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 19:51:14,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:14,653 INFO L225 Difference]: With dead ends: 234 [2022-11-18 19:51:14,653 INFO L226 Difference]: Without dead ends: 232 [2022-11-18 19:51:14,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:51:14,654 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 258 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:14,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 420 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:51:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-18 19:51:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 93. [2022-11-18 19:51:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 92 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2022-11-18 19:51:14,678 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 24 [2022-11-18 19:51:14,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:14,678 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2022-11-18 19:51:14,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2022-11-18 19:51:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 19:51:14,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:14,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:14,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:51:14,680 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:14,681 INFO L85 PathProgramCache]: Analyzing trace with hash 680714775, now seen corresponding path program 1 times [2022-11-18 19:51:14,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:14,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991278397] [2022-11-18 19:51:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:14,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:14,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:14,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991278397] [2022-11-18 19:51:14,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991278397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:14,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:14,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:51:14,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421565384] [2022-11-18 19:51:14,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:14,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:51:14,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:14,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:51:14,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:51:14,787 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:14,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:14,951 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2022-11-18 19:51:14,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:51:14,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 19:51:14,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:14,953 INFO L225 Difference]: With dead ends: 139 [2022-11-18 19:51:14,953 INFO L226 Difference]: Without dead ends: 121 [2022-11-18 19:51:14,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:51:14,954 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 59 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:14,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 186 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:14,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-18 19:51:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 113. [2022-11-18 19:51:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 107 states have (on average 1.2429906542056075) internal successors, (133), 112 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:14,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2022-11-18 19:51:14,984 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 26 [2022-11-18 19:51:14,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:14,984 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2022-11-18 19:51:14,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:14,985 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2022-11-18 19:51:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 19:51:14,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:14,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:14,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:51:14,986 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:14,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:14,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1502606953, now seen corresponding path program 1 times [2022-11-18 19:51:14,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:14,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712233955] [2022-11-18 19:51:14,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:14,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:15,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:15,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712233955] [2022-11-18 19:51:15,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712233955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:15,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:15,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:15,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748490861] [2022-11-18 19:51:15,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:15,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:15,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:15,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:15,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:15,056 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:15,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:15,137 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2022-11-18 19:51:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:15,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 19:51:15,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:15,138 INFO L225 Difference]: With dead ends: 113 [2022-11-18 19:51:15,139 INFO L226 Difference]: Without dead ends: 111 [2022-11-18 19:51:15,139 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 [2022-11-18 19:51:15,140 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 49 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:15,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 76 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:15,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-18 19:51:15,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-11-18 19:51:15,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 110 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2022-11-18 19:51:15,170 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 26 [2022-11-18 19:51:15,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:15,170 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2022-11-18 19:51:15,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:15,171 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2022-11-18 19:51:15,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 19:51:15,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:15,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:15,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:51:15,172 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:15,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash -988757936, now seen corresponding path program 1 times [2022-11-18 19:51:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:15,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201315748] [2022-11-18 19:51:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:15,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:17,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:17,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201315748] [2022-11-18 19:51:17,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201315748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:17,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:17,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:51:17,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520146285] [2022-11-18 19:51:17,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:17,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:51:17,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:17,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:51:17,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:51:17,785 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:18,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:18,360 INFO L93 Difference]: Finished difference Result 268 states and 308 transitions. [2022-11-18 19:51:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:51:18,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 19:51:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:18,362 INFO L225 Difference]: With dead ends: 268 [2022-11-18 19:51:18,362 INFO L226 Difference]: Without dead ends: 266 [2022-11-18 19:51:18,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:51:18,363 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 263 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:18,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 384 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:51:18,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-18 19:51:18,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 114. [2022-11-18 19:51:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.2293577981651376) internal successors, (134), 113 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:18,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2022-11-18 19:51:18,403 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 27 [2022-11-18 19:51:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:18,403 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2022-11-18 19:51:18,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2022-11-18 19:51:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:51:18,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:18,405 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:18,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:51:18,405 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:18,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:18,406 INFO L85 PathProgramCache]: Analyzing trace with hash -937634650, now seen corresponding path program 1 times [2022-11-18 19:51:18,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:18,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760197777] [2022-11-18 19:51:18,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:18,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:18,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:18,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760197777] [2022-11-18 19:51:18,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760197777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:18,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388232064] [2022-11-18 19:51:18,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:18,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:18,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:18,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:18,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:51:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:18,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:51:18,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:18,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:51:18,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:51:18,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:18,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:51:18,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:18,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:51:19,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:51:19,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:51:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:19,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:19,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388232064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:19,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:19,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-11-18 19:51:19,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536649541] [2022-11-18 19:51:19,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:19,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:51:19,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:19,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:51:19,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:51:19,263 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:19,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:19,522 INFO L93 Difference]: Finished difference Result 199 states and 229 transitions. [2022-11-18 19:51:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:51:19,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 19:51:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:19,524 INFO L225 Difference]: With dead ends: 199 [2022-11-18 19:51:19,524 INFO L226 Difference]: Without dead ends: 139 [2022-11-18 19:51:19,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:51:19,525 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 109 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:19,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 209 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:51:19,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-18 19:51:19,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2022-11-18 19:51:19,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 115 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2022-11-18 19:51:19,569 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 29 [2022-11-18 19:51:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:19,569 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2022-11-18 19:51:19,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:19,570 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2022-11-18 19:51:19,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:51:19,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:19,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:19,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:19,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:51:19,777 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:19,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:19,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2010394174, now seen corresponding path program 1 times [2022-11-18 19:51:19,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:19,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485861513] [2022-11-18 19:51:19,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:19,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:20,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:20,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485861513] [2022-11-18 19:51:20,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485861513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:20,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:20,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:51:20,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224059807] [2022-11-18 19:51:20,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:20,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:51:20,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:51:20,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:51:20,147 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:20,485 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2022-11-18 19:51:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:51:20,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 19:51:20,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:20,486 INFO L225 Difference]: With dead ends: 159 [2022-11-18 19:51:20,487 INFO L226 Difference]: Without dead ends: 139 [2022-11-18 19:51:20,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:51:20,488 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 69 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:20,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 290 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:51:20,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-18 19:51:20,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 115. [2022-11-18 19:51:20,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.2) internal successors, (132), 114 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) [2022-11-18 19:51:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2022-11-18 19:51:20,558 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 29 [2022-11-18 19:51:20,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:20,558 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2022-11-18 19:51:20,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:20,558 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2022-11-18 19:51:20,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 19:51:20,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:20,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:20,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:51:20,559 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:20,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:20,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1521997910, now seen corresponding path program 1 times [2022-11-18 19:51:20,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:20,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346602047] [2022-11-18 19:51:20,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:20,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:20,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:20,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346602047] [2022-11-18 19:51:20,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346602047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:20,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:20,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:20,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17440523] [2022-11-18 19:51:20,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:20,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:20,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:20,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:20,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:20,657 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:20,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:20,750 INFO L93 Difference]: Finished difference Result 220 states and 257 transitions. [2022-11-18 19:51:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:20,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-18 19:51:20,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:20,752 INFO L225 Difference]: With dead ends: 220 [2022-11-18 19:51:20,752 INFO L226 Difference]: Without dead ends: 165 [2022-11-18 19:51:20,755 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 [2022-11-18 19:51:20,756 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 26 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:20,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 164 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-18 19:51:20,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 138. [2022-11-18 19:51:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.2105263157894737) internal successors, (161), 137 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2022-11-18 19:51:20,819 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 31 [2022-11-18 19:51:20,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:20,819 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2022-11-18 19:51:20,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:20,820 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2022-11-18 19:51:20,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 19:51:20,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:20,821 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:20,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:51:20,822 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:20,822 INFO L85 PathProgramCache]: Analyzing trace with hash 914215427, now seen corresponding path program 1 times [2022-11-18 19:51:20,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:20,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298647290] [2022-11-18 19:51:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:20,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:21,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:21,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298647290] [2022-11-18 19:51:21,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298647290] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:21,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902255284] [2022-11-18 19:51:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:21,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:21,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:21,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:21,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:51:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:21,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 19:51:21,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:21,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:51:21,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:51:21,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:51:21,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:51:21,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:51:21,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:51:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:21,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:21,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902255284] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:21,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:21,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 6 [2022-11-18 19:51:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530502772] [2022-11-18 19:51:21,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:21,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:51:21,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:51:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:51:21,522 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:21,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:21,909 INFO L93 Difference]: Finished difference Result 247 states and 282 transitions. [2022-11-18 19:51:21,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:51:21,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-18 19:51:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:21,911 INFO L225 Difference]: With dead ends: 247 [2022-11-18 19:51:21,912 INFO L226 Difference]: Without dead ends: 216 [2022-11-18 19:51:21,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:51:21,913 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 95 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:21,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 286 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:51:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-18 19:51:22,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 165. [2022-11-18 19:51:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.2375) internal successors, (198), 164 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 198 transitions. [2022-11-18 19:51:22,007 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 198 transitions. Word has length 32 [2022-11-18 19:51:22,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:22,007 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 198 transitions. [2022-11-18 19:51:22,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:22,008 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 198 transitions. [2022-11-18 19:51:22,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 19:51:22,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:22,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:22,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 19:51:22,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:51:22,216 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:22,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:22,217 INFO L85 PathProgramCache]: Analyzing trace with hash 191981961, now seen corresponding path program 1 times [2022-11-18 19:51:22,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:22,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46986166] [2022-11-18 19:51:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:22,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:22,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:22,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:22,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46986166] [2022-11-18 19:51:22,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46986166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:22,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:22,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:51:22,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042563390] [2022-11-18 19:51:22,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:22,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:51:22,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:22,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:51:22,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:51:22,429 INFO L87 Difference]: Start difference. First operand 165 states and 198 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:22,570 INFO L93 Difference]: Finished difference Result 231 states and 274 transitions. [2022-11-18 19:51:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:51:22,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-18 19:51:22,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:22,572 INFO L225 Difference]: With dead ends: 231 [2022-11-18 19:51:22,572 INFO L226 Difference]: Without dead ends: 117 [2022-11-18 19:51:22,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:51:22,574 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 24 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:22,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 188 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:22,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-18 19:51:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-11-18 19:51:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.1592920353982301) internal successors, (131), 116 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2022-11-18 19:51:22,612 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 35 [2022-11-18 19:51:22,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:22,612 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2022-11-18 19:51:22,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:22,613 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2022-11-18 19:51:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:51:22,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:22,614 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:22,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:51:22,614 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:22,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:22,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1562646056, now seen corresponding path program 1 times [2022-11-18 19:51:22,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:22,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354845317] [2022-11-18 19:51:22,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:22,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:23,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:23,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354845317] [2022-11-18 19:51:23,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354845317] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:23,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82468524] [2022-11-18 19:51:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:23,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:23,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:23,405 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:23,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:51:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:23,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 19:51:23,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:23,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:51:23,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:51:23,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:51:23,806 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:51:23,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:51:23,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:23,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 19:51:23,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:23,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 19:51:23,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 19:51:23,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 19:51:24,065 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:51:24,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-18 19:51:24,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-11-18 19:51:24,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:24,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-18 19:51:24,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:24,399 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:51:24,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-11-18 19:51:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:24,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:24,524 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (and (forall ((v_ArrVal_978 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_978) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) 0)) (forall ((v_ArrVal_979 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_979) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) 0)))) is different from false [2022-11-18 19:51:29,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:51:29,056 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:51:29,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2022-11-18 19:51:29,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:51:29,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:51:29,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 30 [2022-11-18 19:51:29,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 19:51:29,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:51:29,084 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-18 19:51:29,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 1 [2022-11-18 19:51:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:29,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82468524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:29,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:29,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-11-18 19:51:29,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461444447] [2022-11-18 19:51:29,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:29,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:51:29,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:29,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:51:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=369, Unknown=2, NotChecked=40, Total=506 [2022-11-18 19:51:29,132 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:29,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:29,680 INFO L93 Difference]: Finished difference Result 213 states and 237 transitions. [2022-11-18 19:51:29,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:51:29,681 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 19:51:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:29,682 INFO L225 Difference]: With dead ends: 213 [2022-11-18 19:51:29,682 INFO L226 Difference]: Without dead ends: 153 [2022-11-18 19:51:29,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=143, Invalid=509, Unknown=2, NotChecked=48, Total=702 [2022-11-18 19:51:29,684 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 100 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:29,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 554 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 177 Invalid, 0 Unknown, 182 Unchecked, 0.2s Time] [2022-11-18 19:51:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-18 19:51:29,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 138. [2022-11-18 19:51:29,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 134 states have (on average 1.1567164179104477) internal successors, (155), 137 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:29,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 155 transitions. [2022-11-18 19:51:29,723 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 155 transitions. Word has length 36 [2022-11-18 19:51:29,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:29,723 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 155 transitions. [2022-11-18 19:51:29,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:29,724 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 155 transitions. [2022-11-18 19:51:29,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:51:29,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:29,725 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:29,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:29,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:29,931 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:29,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:29,932 INFO L85 PathProgramCache]: Analyzing trace with hash -431498650, now seen corresponding path program 1 times [2022-11-18 19:51:29,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:29,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285553814] [2022-11-18 19:51:29,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:29,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:30,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:30,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285553814] [2022-11-18 19:51:30,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285553814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:30,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:30,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:51:30,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801559332] [2022-11-18 19:51:30,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:30,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:51:30,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:30,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:51:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:51:30,820 INFO L87 Difference]: Start difference. First operand 138 states and 155 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:31,003 INFO L93 Difference]: Finished difference Result 224 states and 254 transitions. [2022-11-18 19:51:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:51:31,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 19:51:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:31,005 INFO L225 Difference]: With dead ends: 224 [2022-11-18 19:51:31,005 INFO L226 Difference]: Without dead ends: 147 [2022-11-18 19:51:31,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:51:31,006 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 14 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:31,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 218 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:31,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-18 19:51:31,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 140. [2022-11-18 19:51:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 136 states have (on average 1.1544117647058822) internal successors, (157), 139 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 157 transitions. [2022-11-18 19:51:31,047 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 157 transitions. Word has length 36 [2022-11-18 19:51:31,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:31,048 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 157 transitions. [2022-11-18 19:51:31,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 157 transitions. [2022-11-18 19:51:31,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:51:31,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:31,049 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:31,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:51:31,050 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 19:51:31,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:31,050 INFO L85 PathProgramCache]: Analyzing trace with hash 589569704, now seen corresponding path program 1 times [2022-11-18 19:51:31,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:31,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52696586] [2022-11-18 19:51:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:31,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:34,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:34,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52696586] [2022-11-18 19:51:34,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52696586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:34,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839493441] [2022-11-18 19:51:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:34,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:34,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:34,306 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:34,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:51:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:34,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-18 19:51:34,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:34,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:51:34,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:51:34,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:51:34,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:34,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 19:51:34,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:34,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 19:51:34,807 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:51:34,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2022-11-18 19:51:34,828 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:51:34,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2022-11-18 19:51:34,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:34,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-18 19:51:34,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:34,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-18 19:51:34,926 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:51:34,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 19:51:35,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:35,274 INFO L321 Elim1Store]: treesize reduction 109, result has 9.2 percent of original size [2022-11-18 19:51:35,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 140 [2022-11-18 19:51:35,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:35,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 90 [2022-11-18 19:51:35,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:35,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:35,352 INFO L321 Elim1Store]: treesize reduction 305, result has 8.1 percent of original size [2022-11-18 19:51:35,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 84 [2022-11-18 19:51:35,386 INFO L321 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2022-11-18 19:51:35,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2022-11-18 19:51:35,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2022-11-18 19:51:36,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:36,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:36,559 INFO L321 Elim1Store]: treesize reduction 8, result has 86.9 percent of original size [2022-11-18 19:51:36,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 11324442 treesize of output 11077645 [2022-11-18 19:52:53,536 WARN L233 SmtUtils]: Spent 1.28m on a formula simplification. DAG size of input: 2138 DAG size of output: 2138 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 19:53:29,714 WARN L233 SmtUtils]: Spent 36.15s on a formula simplification that was a NOOP. DAG size: 2134 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 19:53:29,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10948886 treesize of output 10367254 [2022-11-18 19:54:13,310 WARN L233 SmtUtils]: Spent 43.44s on a formula simplification that was a NOOP. DAG size: 2133 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 19:54:13,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:54:13,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:54:13,877 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:54:13,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 1212 treesize of output 884 [2022-11-18 19:54:57,882 WARN L233 SmtUtils]: Spent 44.00s on a formula simplification that was a NOOP. DAG size: 2138 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 19:56:23,426 WARN L233 SmtUtils]: Spent 41.49s on a formula simplification that was a NOOP. DAG size: 2134 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:00:51,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:00:51,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1562 treesize of output 1514 [2022-11-18 20:00:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:52,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:52,343 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:00:52,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 122 [2022-11-18 20:00:52,361 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:00:52,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 131 [2022-11-18 20:00:52,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2022-11-18 20:00:55,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:00:55,217 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:00:55,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 64 [2022-11-18 20:00:55,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:00:55,233 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:00:55,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 51 [2022-11-18 20:00:55,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:00:55,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 74 [2022-11-18 20:00:55,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:00:55,257 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:00:55,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 776 treesize of output 730 [2022-11-18 20:00:55,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 552 treesize of output 520 [2022-11-18 20:00:55,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 642 treesize of output 562 [2022-11-18 20:00:55,324 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:00:55,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 568 treesize of output 550 [2022-11-18 20:00:55,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 440 treesize of output 400 [2022-11-18 20:00:55,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 509 treesize of output 471 [2022-11-18 20:00:55,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:00:55,506 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:00:55,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 51 [2022-11-18 20:00:55,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:00:55,517 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:00:55,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 639 treesize of output 517 [2022-11-18 20:00:55,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 487 treesize of output 397 [2022-11-18 20:00:55,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 178 [2022-11-18 20:00:55,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 372 treesize of output 364 [2022-11-18 20:00:55,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 364 treesize of output 332 [2022-11-18 20:00:55,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 332 treesize of output 312 [2022-11-18 20:00:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:55,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839493441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:00:55,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:00:55,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 22 [2022-11-18 20:00:55,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554905804] [2022-11-18 20:00:55,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:00:55,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:00:55,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:55,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:00:55,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=364, Unknown=9, NotChecked=0, Total=462 [2022-11-18 20:00:55,862 INFO L87 Difference]: Start difference. First operand 140 states and 157 transitions. Second operand has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:56,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:56,848 INFO L93 Difference]: Finished difference Result 230 states and 256 transitions. [2022-11-18 20:00:56,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:00:56,853 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 20:00:56,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:56,855 INFO L225 Difference]: With dead ends: 230 [2022-11-18 20:00:56,855 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 20:00:56,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=159, Invalid=687, Unknown=24, NotChecked=0, Total=870 [2022-11-18 20:00:56,857 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 146 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 220 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:56,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 655 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 193 Invalid, 0 Unknown, 220 Unchecked, 0.3s Time] [2022-11-18 20:00:56,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 20:00:56,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 142. [2022-11-18 20:00:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 138 states have (on average 1.1521739130434783) internal successors, (159), 141 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 159 transitions. [2022-11-18 20:00:56,902 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 159 transitions. Word has length 36 [2022-11-18 20:00:56,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:56,902 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 159 transitions. [2022-11-18 20:00:56,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:56,903 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 159 transitions. [2022-11-18 20:00:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:00:56,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:56,904 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:56,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:00:57,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:00:57,113 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2022-11-18 20:00:57,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash 878042536, now seen corresponding path program 1 times [2022-11-18 20:00:57,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:57,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975642575] [2022-11-18 20:00:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:59,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:59,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975642575] [2022-11-18 20:00:59,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975642575] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:00:59,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243390350] [2022-11-18 20:00:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:59,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:00:59,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:00:59,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:00:59,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff379a1-6e3e-4081-bc66-16137fef3df0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:00:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:59,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-18 20:00:59,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:00:59,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:01:00,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:00,087 INFO L321 Elim1Store]: treesize reduction 23, result has 56.6 percent of original size [2022-11-18 20:01:00,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 383 treesize of output 326 [2022-11-18 20:01:00,202 INFO L321 Elim1Store]: treesize reduction 23, result has 56.6 percent of original size [2022-11-18 20:01:00,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 491 treesize of output 404 [2022-11-18 20:01:00,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:00,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:00,343 INFO L321 Elim1Store]: treesize reduction 566, result has 5.4 percent of original size [2022-11-18 20:01:00,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 368 treesize of output 525 [2022-11-18 20:01:00,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:00,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:00,474 INFO L321 Elim1Store]: treesize reduction 404, result has 5.4 percent of original size [2022-11-18 20:01:00,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 416 treesize of output 478 [2022-11-18 20:01:00,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 67 [2022-11-18 20:01:00,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:01:00,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 82 [2022-11-18 20:01:00,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-11-18 20:01:00,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-11-18 20:01:00,604 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:01:00,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:01:00,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-11-18 20:01:00,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 23 [2022-11-18 20:01:00,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 23 [2022-11-18 20:01:00,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-18 20:01:00,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 13 [2022-11-18 20:01:00,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-11-18 20:01:00,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-18 20:01:01,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 78 [2022-11-18 20:01:01,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 78 [2022-11-18 20:01:01,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-11-18 20:01:01,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-11-18 20:01:01,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 45 [2022-11-18 20:01:01,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-11-18 20:01:01,397 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-18 20:01:01,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 84 treesize of output 68 [2022-11-18 20:01:01,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 66 [2022-11-18 20:01:01,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:01,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2022-11-18 20:01:01,446 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 20:01:01,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:01:01,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 84 [2022-11-18 20:01:01,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-18 20:01:01,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:01,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2022-11-18 20:01:04,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:04,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:04,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 81 [2022-11-18 20:01:04,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:04,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:04,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 20:01:04,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:04,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:04,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 111 [2022-11-18 20:01:04,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:01:04,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-18 20:01:04,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-11-18 20:01:04,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:04,154 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-18 20:01:04,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 77 [2022-11-18 20:01:04,175 INFO L321 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2022-11-18 20:01:04,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:01:04,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:04,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:01:04,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:01:04,499 INFO L321 Elim1Store]: treesize reduction 50, result has 33.3 percent of original size [2022-11-18 20:01:04,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 125 treesize of output 98 [2022-11-18 20:01:04,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:04,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 88 [2022-11-18 20:01:05,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:05,527 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:01:05,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:01:05,544 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-18 20:01:05,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 123 treesize of output 71 [2022-11-18 20:01:05,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:05,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 26 [2022-11-18 20:01:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:05,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:06,126 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:01:06,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 169 [2022-11-18 20:01:06,134 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:01:06,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 157 [2022-11-18 20:01:19,376 INFO L321 Elim1Store]: treesize reduction 62, result has 54.4 percent of original size [2022-11-18 20:01:19,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 43597 treesize of output 34919 [2022-11-18 20:01:50,559 WARN L233 SmtUtils]: Spent 31.08s on a formula simplification. DAG size of input: 46 DAG size of output: 36 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 20:01:50,560 INFO L321 Elim1Store]: treesize reduction 62, result has 54.4 percent of original size [2022-11-18 20:01:50,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 115629 treesize of output 84375