./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU --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 64bit --witnessprinter.graph.data.programhash 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:24:35,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:24:35,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:24:35,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:24:35,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:24:35,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:24:35,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:24:35,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:24:35,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:24:35,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:24:35,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:24:35,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:24:35,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:24:35,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:24:35,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:24:35,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:24:35,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:24:35,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:24:35,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:24:35,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:24:35,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:24:35,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:24:35,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:24:35,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:24:35,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:24:35,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:24:35,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:24:35,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:24:35,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:24:35,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:24:35,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:24:35,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:24:35,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:24:35,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:24:35,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:24:35,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:24:35,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:24:35,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:24:35,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:24:35,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:24:35,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:24:35,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:24:35,535 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:24:35,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:24:35,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:24:35,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:24:35,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:24:35,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:24:35,542 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:24:35,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:24:35,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:24:35,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:24:35,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:24:35,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:24:35,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:24:35,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:24:35,544 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:24:35,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:24:35,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:24:35,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:24:35,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:24:35,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:24:35,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:24:35,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:24:35,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:24:35,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:24:35,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:24:35,547 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:24:35,547 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:24:35,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:24:35,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:24:35,548 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_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 [2021-11-02 22:24:35,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:24:35,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:24:35,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:24:35,929 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:24:35,931 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:24:35,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i [2021-11-02 22:24:36,043 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/data/d5949758a/a9438b0508664232a399265b57bcfeb9/FLAG2bad1a744 [2021-11-02 22:24:37,049 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:24:37,051 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i [2021-11-02 22:24:37,111 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/data/d5949758a/a9438b0508664232a399265b57bcfeb9/FLAG2bad1a744 [2021-11-02 22:24:37,418 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/data/d5949758a/a9438b0508664232a399265b57bcfeb9 [2021-11-02 22:24:37,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:24:37,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:24:37,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:24:37,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:24:37,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:24:37,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:24:37" (1/1) ... [2021-11-02 22:24:37,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297e4b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:37, skipping insertion in model container [2021-11-02 22:24:37,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:24:37" (1/1) ... [2021-11-02 22:24:37,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:24:37,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:24:37,923 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4497,4510] [2021-11-02 22:24:37,935 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4557,4570] [2021-11-02 22:24:37,967 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 22:24:37,977 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 22:24:38,972 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 22:24:39,064 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:39,065 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:39,066 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:39,067 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:39,069 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:39,087 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:39,088 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:39,091 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:39,092 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:39,614 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 22:24:39,615 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 22:24:39,618 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 22:24:39,630 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 22:24:39,635 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 22:24:39,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 22:24:39,642 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 22:24:39,644 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 22:24:39,659 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 22:24:39,660 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 22:24:39,889 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:39,890 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:39,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:24:40,017 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:24:40,034 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4497,4510] [2021-11-02 22:24:40,035 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4557,4570] [2021-11-02 22:24:40,038 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 22:24:40,039 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 22:24:40,079 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 22:24:40,097 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:40,098 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:40,098 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:40,099 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:40,100 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:40,109 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:40,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:40,111 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:40,112 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:40,207 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 22:24:40,209 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 22:24:40,210 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 22:24:40,211 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 22:24:40,213 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 22:24:40,214 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 22:24:40,214 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 22:24:40,215 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 22:24:40,216 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 22:24:40,216 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 22:24:40,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:40,309 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 22:24:40,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:24:40,664 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:24:40,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:40 WrapperNode [2021-11-02 22:24:40,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:24:40,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:24:40,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:24:40,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:24:40,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:40" (1/1) ... [2021-11-02 22:24:40,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:40" (1/1) ... [2021-11-02 22:24:40,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:24:40,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:24:40,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:24:40,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:24:41,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:40" (1/1) ... [2021-11-02 22:24:41,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:40" (1/1) ... [2021-11-02 22:24:41,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:40" (1/1) ... [2021-11-02 22:24:41,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:40" (1/1) ... [2021-11-02 22:24:41,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:40" (1/1) ... [2021-11-02 22:24:41,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:40" (1/1) ... [2021-11-02 22:24:41,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:40" (1/1) ... [2021-11-02 22:24:41,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:24:41,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:24:41,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:24:41,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:24:41,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:40" (1/1) ... [2021-11-02 22:24:41,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:24:41,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:41,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:24:41,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:24:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:24:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:24:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:24:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:24:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:24:41,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:24:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:24:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-02 22:24:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:24:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:24:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:24:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:24:54,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:24:54,315 INFO L299 CfgBuilder]: Removed 188 assume(true) statements. [2021-11-02 22:24:54,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:24:54 BoogieIcfgContainer [2021-11-02 22:24:54,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:24:54,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:24:54,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:24:54,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:24:54,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:24:37" (1/3) ... [2021-11-02 22:24:54,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc4fa0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:24:54, skipping insertion in model container [2021-11-02 22:24:54,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:40" (2/3) ... [2021-11-02 22:24:54,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc4fa0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:24:54, skipping insertion in model container [2021-11-02 22:24:54,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:24:54" (3/3) ... [2021-11-02 22:24:54,331 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_size_harness.i [2021-11-02 22:24:54,337 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:24:54,338 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-02 22:24:54,433 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:24:54,452 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:24:54,453 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-02 22:24:54,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 246 states, 231 states have (on average 1.4458874458874458) internal successors, (334), 245 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:54,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-02 22:24:54,517 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:54,518 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:24:54,519 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:24:54,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:54,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1385932008, now seen corresponding path program 1 times [2021-11-02 22:24:54,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:54,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169107267] [2021-11-02 22:24:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:54,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:55,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:55,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169107267] [2021-11-02 22:24:55,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169107267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:24:55,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:24:55,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:24:55,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26449240] [2021-11-02 22:24:55,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:24:55,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:55,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:24:55,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:24:55,618 INFO L87 Difference]: Start difference. First operand has 246 states, 231 states have (on average 1.4458874458874458) internal successors, (334), 245 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:55,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:55,686 INFO L93 Difference]: Finished difference Result 486 states and 661 transitions. [2021-11-02 22:24:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:24:55,688 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-02 22:24:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:55,703 INFO L225 Difference]: With dead ends: 486 [2021-11-02 22:24:55,703 INFO L226 Difference]: Without dead ends: 239 [2021-11-02 22:24:55,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:24:55,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-02 22:24:55,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-02 22:24:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 225 states have (on average 1.3244444444444445) internal successors, (298), 238 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 298 transitions. [2021-11-02 22:24:55,779 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 298 transitions. Word has length 40 [2021-11-02 22:24:55,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:55,780 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 298 transitions. [2021-11-02 22:24:55,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 298 transitions. [2021-11-02 22:24:55,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-02 22:24:55,784 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:55,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:24:55,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:24:55,785 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:24:55,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:55,786 INFO L85 PathProgramCache]: Analyzing trace with hash 577264856, now seen corresponding path program 1 times [2021-11-02 22:24:55,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:55,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718749115] [2021-11-02 22:24:55,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:55,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:56,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:56,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718749115] [2021-11-02 22:24:56,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718749115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:24:56,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:24:56,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:24:56,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872313981] [2021-11-02 22:24:56,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:24:56,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:56,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:24:56,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:24:56,301 INFO L87 Difference]: Start difference. First operand 239 states and 298 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:56,469 INFO L93 Difference]: Finished difference Result 398 states and 491 transitions. [2021-11-02 22:24:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:24:56,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-02 22:24:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:56,473 INFO L225 Difference]: With dead ends: 398 [2021-11-02 22:24:56,473 INFO L226 Difference]: Without dead ends: 239 [2021-11-02 22:24:56,475 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:24:56,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-02 22:24:56,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-02 22:24:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 225 states have (on average 1.3155555555555556) internal successors, (296), 238 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 296 transitions. [2021-11-02 22:24:56,504 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 296 transitions. Word has length 40 [2021-11-02 22:24:56,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:56,504 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 296 transitions. [2021-11-02 22:24:56,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:56,505 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 296 transitions. [2021-11-02 22:24:56,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-02 22:24:56,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:56,507 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:24:56,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:24:56,508 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:24:56,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:56,509 INFO L85 PathProgramCache]: Analyzing trace with hash -252060921, now seen corresponding path program 1 times [2021-11-02 22:24:56,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:56,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624615237] [2021-11-02 22:24:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:56,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:57,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:57,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624615237] [2021-11-02 22:24:57,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624615237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:24:57,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:24:57,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:24:57,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007360917] [2021-11-02 22:24:57,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:24:57,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:57,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:24:57,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:24:57,098 INFO L87 Difference]: Start difference. First operand 239 states and 296 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:57,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:57,575 INFO L93 Difference]: Finished difference Result 509 states and 617 transitions. [2021-11-02 22:24:57,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:24:57,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-02 22:24:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:57,579 INFO L225 Difference]: With dead ends: 509 [2021-11-02 22:24:57,579 INFO L226 Difference]: Without dead ends: 318 [2021-11-02 22:24:57,583 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:24:57,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-02 22:24:57,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 239. [2021-11-02 22:24:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 225 states have (on average 1.3066666666666666) internal successors, (294), 238 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:57,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 294 transitions. [2021-11-02 22:24:57,623 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 294 transitions. Word has length 44 [2021-11-02 22:24:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:57,624 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 294 transitions. [2021-11-02 22:24:57,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 294 transitions. [2021-11-02 22:24:57,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 22:24:57,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:57,634 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:24:57,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:24:57,635 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:24:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:57,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1945926435, now seen corresponding path program 1 times [2021-11-02 22:24:57,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:57,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407307393] [2021-11-02 22:24:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:57,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:57,820 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:24:57,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305615620] [2021-11-02 22:24:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:57,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:57,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:57,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:57,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:24:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:59,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 2572 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:24:59,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:59,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:59,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407307393] [2021-11-02 22:24:59,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:24:59,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305615620] [2021-11-02 22:24:59,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305615620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:24:59,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:24:59,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:24:59,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200087831] [2021-11-02 22:24:59,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:24:59,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:59,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:24:59,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:24:59,831 INFO L87 Difference]: Start difference. First operand 239 states and 294 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:00,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:00,145 INFO L93 Difference]: Finished difference Result 399 states and 486 transitions. [2021-11-02 22:25:00,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:25:00,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-02 22:25:00,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:00,149 INFO L225 Difference]: With dead ends: 399 [2021-11-02 22:25:00,149 INFO L226 Difference]: Without dead ends: 239 [2021-11-02 22:25:00,150 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:25:00,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-02 22:25:00,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-02 22:25:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 225 states have (on average 1.2977777777777777) internal successors, (292), 238 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 292 transitions. [2021-11-02 22:25:00,184 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 292 transitions. Word has length 52 [2021-11-02 22:25:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:00,186 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 292 transitions. [2021-11-02 22:25:00,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 292 transitions. [2021-11-02 22:25:00,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:25:00,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:00,191 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:25:00,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:00,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:00,411 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:25:00,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:00,411 INFO L85 PathProgramCache]: Analyzing trace with hash -909602284, now seen corresponding path program 1 times [2021-11-02 22:25:00,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:00,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544540122] [2021-11-02 22:25:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:00,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:00,551 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:25:00,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239967472] [2021-11-02 22:25:00,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:00,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:00,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:00,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:00,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:25:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:01,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 2622 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:25:01,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:02,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:02,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544540122] [2021-11-02 22:25:02,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:25:02,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239967472] [2021-11-02 22:25:02,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239967472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:25:02,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:25:02,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:25:02,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364802355] [2021-11-02 22:25:02,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:25:02,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:02,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:25:02,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:25:02,125 INFO L87 Difference]: Start difference. First operand 239 states and 292 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:02,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:02,817 INFO L93 Difference]: Finished difference Result 415 states and 506 transitions. [2021-11-02 22:25:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:25:02,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-02 22:25:02,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:02,821 INFO L225 Difference]: With dead ends: 415 [2021-11-02 22:25:02,821 INFO L226 Difference]: Without dead ends: 239 [2021-11-02 22:25:02,822 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:25:02,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-02 22:25:02,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-02 22:25:02,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 225 states have (on average 1.288888888888889) internal successors, (290), 238 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:02,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 290 transitions. [2021-11-02 22:25:02,835 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 290 transitions. Word has length 64 [2021-11-02 22:25:02,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:02,836 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 290 transitions. [2021-11-02 22:25:02,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:02,836 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 290 transitions. [2021-11-02 22:25:02,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 22:25:02,837 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:02,838 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:25:02,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:03,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:03,064 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:25:03,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:03,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1743581048, now seen corresponding path program 1 times [2021-11-02 22:25:03,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:03,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135923838] [2021-11-02 22:25:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:03,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:03,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:25:03,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961484799] [2021-11-02 22:25:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:03,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:03,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:03,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:03,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:25:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:04,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:25:04,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:04,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:04,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135923838] [2021-11-02 22:25:04,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:25:04,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961484799] [2021-11-02 22:25:04,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961484799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:25:04,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:25:04,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:25:04,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118492413] [2021-11-02 22:25:04,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:25:04,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:25:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:25:04,772 INFO L87 Difference]: Start difference. First operand 239 states and 290 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:05,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:05,107 INFO L93 Difference]: Finished difference Result 368 states and 441 transitions. [2021-11-02 22:25:05,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:25:05,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-02 22:25:05,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:05,114 INFO L225 Difference]: With dead ends: 368 [2021-11-02 22:25:05,114 INFO L226 Difference]: Without dead ends: 239 [2021-11-02 22:25:05,114 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:25:05,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-02 22:25:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-02 22:25:05,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 225 states have (on average 1.28) internal successors, (288), 238 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 288 transitions. [2021-11-02 22:25:05,128 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 288 transitions. Word has length 72 [2021-11-02 22:25:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:05,129 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 288 transitions. [2021-11-02 22:25:05,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 288 transitions. [2021-11-02 22:25:05,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 22:25:05,130 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:05,130 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:25:05,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:05,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:05,344 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:25:05,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1843556290, now seen corresponding path program 1 times [2021-11-02 22:25:05,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:05,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988232632] [2021-11-02 22:25:05,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:05,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:05,462 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:25:05,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052184427] [2021-11-02 22:25:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:05,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:05,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:05,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:05,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:25:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:06,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:25:06,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:06,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:06,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988232632] [2021-11-02 22:25:06,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:25:06,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052184427] [2021-11-02 22:25:06,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052184427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:25:06,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:25:06,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:25:06,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488459513] [2021-11-02 22:25:06,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:25:06,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:06,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:25:06,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:25:06,872 INFO L87 Difference]: Start difference. First operand 239 states and 288 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:07,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:07,218 INFO L93 Difference]: Finished difference Result 461 states and 561 transitions. [2021-11-02 22:25:07,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:25:07,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-02 22:25:07,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:07,229 INFO L225 Difference]: With dead ends: 461 [2021-11-02 22:25:07,229 INFO L226 Difference]: Without dead ends: 269 [2021-11-02 22:25:07,230 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:25:07,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-02 22:25:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 251. [2021-11-02 22:25:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 237 states have (on average 1.2658227848101267) internal successors, (300), 250 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:07,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 300 transitions. [2021-11-02 22:25:07,245 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 300 transitions. Word has length 88 [2021-11-02 22:25:07,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:07,246 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 300 transitions. [2021-11-02 22:25:07,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:07,246 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 300 transitions. [2021-11-02 22:25:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 22:25:07,247 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:07,247 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:25:07,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:07,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-02 22:25:07,456 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:25:07,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 68548928, now seen corresponding path program 1 times [2021-11-02 22:25:07,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:07,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242499906] [2021-11-02 22:25:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:07,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:07,611 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:25:07,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948612237] [2021-11-02 22:25:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:07,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:07,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:07,616 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:07,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:25:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:08,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2907 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 22:25:08,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:09,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:09,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242499906] [2021-11-02 22:25:09,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:25:09,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948612237] [2021-11-02 22:25:09,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948612237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:25:09,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:25:09,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:25:09,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204349185] [2021-11-02 22:25:09,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:25:09,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:09,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:25:09,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:25:09,048 INFO L87 Difference]: Start difference. First operand 251 states and 300 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:09,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:09,259 INFO L93 Difference]: Finished difference Result 580 states and 684 transitions. [2021-11-02 22:25:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:25:09,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-02 22:25:09,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:09,263 INFO L225 Difference]: With dead ends: 580 [2021-11-02 22:25:09,263 INFO L226 Difference]: Without dead ends: 411 [2021-11-02 22:25:09,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:25:09,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-11-02 22:25:09,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 263. [2021-11-02 22:25:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 249 states have (on average 1.2690763052208835) internal successors, (316), 262 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 316 transitions. [2021-11-02 22:25:09,279 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 316 transitions. Word has length 88 [2021-11-02 22:25:09,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:09,280 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 316 transitions. [2021-11-02 22:25:09,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:09,280 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 316 transitions. [2021-11-02 22:25:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 22:25:09,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:09,281 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:25:09,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:09,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:09,508 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:25:09,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:09,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2117936770, now seen corresponding path program 1 times [2021-11-02 22:25:09,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:09,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233949204] [2021-11-02 22:25:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:09,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:09,630 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:25:09,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876388991] [2021-11-02 22:25:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:09,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:09,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:09,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:09,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:25:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:10,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:25:10,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:11,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:11,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233949204] [2021-11-02 22:25:11,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:25:11,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876388991] [2021-11-02 22:25:11,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876388991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:25:11,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:25:11,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:25:11,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340905461] [2021-11-02 22:25:11,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:25:11,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:11,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:25:11,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:25:11,380 INFO L87 Difference]: Start difference. First operand 263 states and 316 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:19,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:19,440 INFO L93 Difference]: Finished difference Result 621 states and 741 transitions. [2021-11-02 22:25:19,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:25:19,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-02 22:25:19,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:19,444 INFO L225 Difference]: With dead ends: 621 [2021-11-02 22:25:19,444 INFO L226 Difference]: Without dead ends: 437 [2021-11-02 22:25:19,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:25:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-02 22:25:19,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 271. [2021-11-02 22:25:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 257 states have (on average 1.2684824902723735) internal successors, (326), 270 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 326 transitions. [2021-11-02 22:25:19,464 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 326 transitions. Word has length 88 [2021-11-02 22:25:19,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:19,465 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 326 transitions. [2021-11-02 22:25:19,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:19,465 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 326 transitions. [2021-11-02 22:25:19,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 22:25:19,466 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:19,467 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:25:19,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:19,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:19,672 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:25:19,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:19,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1928884032, now seen corresponding path program 1 times [2021-11-02 22:25:19,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:19,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174193515] [2021-11-02 22:25:19,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:19,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:19,789 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:25:19,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059717835] [2021-11-02 22:25:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:19,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:19,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:19,791 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:19,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:25:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:21,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 2909 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:25:21,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:21,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:21,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174193515] [2021-11-02 22:25:21,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:25:21,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059717835] [2021-11-02 22:25:21,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059717835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:25:21,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:25:21,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:25:21,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141294347] [2021-11-02 22:25:21,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:25:21,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:25:21,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:25:21,385 INFO L87 Difference]: Start difference. First operand 271 states and 326 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:21,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:21,527 INFO L93 Difference]: Finished difference Result 475 states and 568 transitions. [2021-11-02 22:25:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:25:21,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-02 22:25:21,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:21,534 INFO L225 Difference]: With dead ends: 475 [2021-11-02 22:25:21,534 INFO L226 Difference]: Without dead ends: 287 [2021-11-02 22:25:21,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:25:21,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-02 22:25:21,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 279. [2021-11-02 22:25:21,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 265 states have (on average 1.260377358490566) internal successors, (334), 278 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 334 transitions. [2021-11-02 22:25:21,550 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 334 transitions. Word has length 88 [2021-11-02 22:25:21,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:21,551 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 334 transitions. [2021-11-02 22:25:21,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:21,551 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 334 transitions. [2021-11-02 22:25:21,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 22:25:21,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:21,553 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:25:21,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:21,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:21,770 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:25:21,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:21,771 INFO L85 PathProgramCache]: Analyzing trace with hash 994275966, now seen corresponding path program 1 times [2021-11-02 22:25:21,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:21,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569346004] [2021-11-02 22:25:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:21,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:21,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:25:21,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175629957] [2021-11-02 22:25:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:21,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:21,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:21,883 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:21,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:25:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:23,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-02 22:25:23,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:24,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:24,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569346004] [2021-11-02 22:25:24,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:25:24,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175629957] [2021-11-02 22:25:24,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175629957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:25:24,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:25:24,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 22:25:24,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197265617] [2021-11-02 22:25:24,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 22:25:24,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:24,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 22:25:24,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:25:24,909 INFO L87 Difference]: Start difference. First operand 279 states and 334 transitions. Second operand has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:31,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:31,159 INFO L93 Difference]: Finished difference Result 819 states and 965 transitions. [2021-11-02 22:25:31,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:25:31,160 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-02 22:25:31,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:31,164 INFO L225 Difference]: With dead ends: 819 [2021-11-02 22:25:31,164 INFO L226 Difference]: Without dead ends: 636 [2021-11-02 22:25:31,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:25:31,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-11-02 22:25:31,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 297. [2021-11-02 22:25:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 283 states have (on average 1.265017667844523) internal successors, (358), 296 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 358 transitions. [2021-11-02 22:25:31,190 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 358 transitions. Word has length 88 [2021-11-02 22:25:31,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:31,191 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 358 transitions. [2021-11-02 22:25:31,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:31,191 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 358 transitions. [2021-11-02 22:25:31,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 22:25:31,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:31,193 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:25:31,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:31,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-02 22:25:31,412 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:25:31,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:31,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1623498204, now seen corresponding path program 1 times [2021-11-02 22:25:31,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:31,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242382684] [2021-11-02 22:25:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:31,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:31,526 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:25:31,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611698270] [2021-11-02 22:25:31,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:31,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:31,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:31,528 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:31,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 22:25:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:33,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 2909 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-02 22:25:33,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:33,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:25:34,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:25:34,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 [2021-11-02 22:25:34,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:25:34,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 [2021-11-02 22:25:34,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:25:34,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:25:34,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:25:34,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:25:35,371 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 22:25:35,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:25:35,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:25:35,648 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-02 22:25:35,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 67 treesize of output 58 [2021-11-02 22:25:35,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:25:35,721 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-02 22:25:35,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 52 treesize of output 43 [2021-11-02 22:25:36,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:25:36,827 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-02 22:25:36,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-02 22:25:36,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:25:36,878 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-02 22:25:36,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 52 treesize of output 47 [2021-11-02 22:25:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:37,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:37,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242382684] [2021-11-02 22:25:37,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:25:37,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611698270] [2021-11-02 22:25:37,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611698270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:25:37,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:25:37,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:25:37,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940303124] [2021-11-02 22:25:37,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:25:37,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:37,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:25:37,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:25:37,580 INFO L87 Difference]: Start difference. First operand 297 states and 358 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:08,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:08,335 INFO L93 Difference]: Finished difference Result 959 states and 1157 transitions. [2021-11-02 22:26:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 22:26:08,336 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-02 22:26:08,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:08,342 INFO L225 Difference]: With dead ends: 959 [2021-11-02 22:26:08,343 INFO L226 Difference]: Without dead ends: 735 [2021-11-02 22:26:08,344 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 22:26:08,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-02 22:26:08,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 454. [2021-11-02 22:26:08,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 440 states have (on average 1.259090909090909) internal successors, (554), 453 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:08,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 554 transitions. [2021-11-02 22:26:08,410 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 554 transitions. Word has length 90 [2021-11-02 22:26:08,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:08,410 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 554 transitions. [2021-11-02 22:26:08,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:08,411 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 554 transitions. [2021-11-02 22:26:08,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 22:26:08,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:08,416 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:08,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:08,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-02 22:26:08,634 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:26:08,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:08,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1179597530, now seen corresponding path program 1 times [2021-11-02 22:26:08,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:08,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096444716] [2021-11-02 22:26:08,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:08,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:08,756 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:26:08,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932527420] [2021-11-02 22:26:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:08,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:08,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:08,758 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:08,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 22:26:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:10,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:26:10,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:10,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:10,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096444716] [2021-11-02 22:26:10,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:26:10,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932527420] [2021-11-02 22:26:10,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932527420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:10,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:10,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:26:10,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76766284] [2021-11-02 22:26:10,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:26:10,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:10,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:26:10,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:26:10,546 INFO L87 Difference]: Start difference. First operand 454 states and 554 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:16,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:16,279 INFO L93 Difference]: Finished difference Result 1063 states and 1292 transitions. [2021-11-02 22:26:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:26:16,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-02 22:26:16,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:16,286 INFO L225 Difference]: With dead ends: 1063 [2021-11-02 22:26:16,286 INFO L226 Difference]: Without dead ends: 673 [2021-11-02 22:26:16,287 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:26:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-11-02 22:26:16,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 464. [2021-11-02 22:26:16,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 450 states have (on average 1.251111111111111) internal successors, (563), 463 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:16,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 563 transitions. [2021-11-02 22:26:16,336 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 563 transitions. Word has length 90 [2021-11-02 22:26:16,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:16,337 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 563 transitions. [2021-11-02 22:26:16,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:16,337 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 563 transitions. [2021-11-02 22:26:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 22:26:16,347 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:16,348 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:16,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:16,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-02 22:26:16,562 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:26:16,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:16,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1660677788, now seen corresponding path program 1 times [2021-11-02 22:26:16,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:16,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125509911] [2021-11-02 22:26:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:16,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:16,678 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:26:16,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505314659] [2021-11-02 22:26:16,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:16,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:16,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:16,680 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:16,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 22:26:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:19,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 2909 conjuncts, 134 conjunts are in the unsatisfiable core [2021-11-02 22:26:19,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:19,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:26:20,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:26:20,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 [2021-11-02 22:26:20,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:26:20,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 [2021-11-02 22:26:20,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:26:20,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:26:20,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:26:20,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:26:20,707 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 22:26:20,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:26:20,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:26:21,018 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-02 22:26:21,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 67 treesize of output 58 [2021-11-02 22:26:21,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:26:21,088 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-02 22:26:21,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 52 treesize of output 43 [2021-11-02 22:26:22,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:26:22,138 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-02 22:26:22,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-02 22:26:22,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:26:22,212 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-02 22:26:22,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 52 treesize of output 47 [2021-11-02 22:26:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:23,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:23,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125509911] [2021-11-02 22:26:23,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:26:23,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505314659] [2021-11-02 22:26:23,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505314659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:23,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:23,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-02 22:26:23,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515584782] [2021-11-02 22:26:23,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 22:26:23,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:23,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 22:26:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:26:23,161 INFO L87 Difference]: Start difference. First operand 464 states and 563 transitions. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:53,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:53,355 INFO L93 Difference]: Finished difference Result 1255 states and 1486 transitions. [2021-11-02 22:26:53,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-02 22:26:53,356 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-02 22:26:53,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:53,365 INFO L225 Difference]: With dead ends: 1255 [2021-11-02 22:26:53,365 INFO L226 Difference]: Without dead ends: 935 [2021-11-02 22:26:53,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=257, Invalid=1383, Unknown=0, NotChecked=0, Total=1640 [2021-11-02 22:26:53,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2021-11-02 22:26:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 474. [2021-11-02 22:26:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 460 states have (on average 1.241304347826087) internal successors, (571), 473 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:53,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 571 transitions. [2021-11-02 22:26:53,424 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 571 transitions. Word has length 90 [2021-11-02 22:26:53,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:53,425 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 571 transitions. [2021-11-02 22:26:53,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:53,425 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 571 transitions. [2021-11-02 22:26:53,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 22:26:53,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:53,428 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:53,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:53,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-02 22:26:53,636 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:26:53,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:53,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1391255718, now seen corresponding path program 1 times [2021-11-02 22:26:53,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:53,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737971915] [2021-11-02 22:26:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:53,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:53,761 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:26:53,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638007171] [2021-11-02 22:26:53,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:53,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:53,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:53,763 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:53,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 22:26:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:55,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 2914 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:26:55,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:55,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:55,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737971915] [2021-11-02 22:26:55,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:26:55,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638007171] [2021-11-02 22:26:55,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638007171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:55,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:55,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:26:55,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38886537] [2021-11-02 22:26:55,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:26:55,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:55,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:26:55,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:26:55,485 INFO L87 Difference]: Start difference. First operand 474 states and 571 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:55,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:55,602 INFO L93 Difference]: Finished difference Result 788 states and 944 transitions. [2021-11-02 22:26:55,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:26:55,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-02 22:26:55,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:55,606 INFO L225 Difference]: With dead ends: 788 [2021-11-02 22:26:55,606 INFO L226 Difference]: Without dead ends: 461 [2021-11-02 22:26:55,607 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:26:55,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-02 22:26:55,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 452. [2021-11-02 22:26:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 438 states have (on average 1.2237442922374429) internal successors, (536), 451 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 536 transitions. [2021-11-02 22:26:55,646 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 536 transitions. Word has length 90 [2021-11-02 22:26:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:55,646 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 536 transitions. [2021-11-02 22:26:55,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 536 transitions. [2021-11-02 22:26:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 22:26:55,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:55,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:55,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:55,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-02 22:26:55,872 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:26:55,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:55,872 INFO L85 PathProgramCache]: Analyzing trace with hash 913664384, now seen corresponding path program 1 times [2021-11-02 22:26:55,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:55,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851380352] [2021-11-02 22:26:55,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:55,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:55,979 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:26:55,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544497572] [2021-11-02 22:26:55,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:55,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:55,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:55,981 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:56,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 22:26:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:57,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:26:57,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:57,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:57,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:57,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851380352] [2021-11-02 22:26:57,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:26:57,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544497572] [2021-11-02 22:26:57,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544497572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:57,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:57,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:57,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321671883] [2021-11-02 22:26:57,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:57,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:57,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:57,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:57,710 INFO L87 Difference]: Start difference. First operand 452 states and 536 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:57,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:57,816 INFO L93 Difference]: Finished difference Result 1021 states and 1205 transitions. [2021-11-02 22:26:57,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:57,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 22:26:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:57,822 INFO L225 Difference]: With dead ends: 1021 [2021-11-02 22:26:57,822 INFO L226 Difference]: Without dead ends: 738 [2021-11-02 22:26:57,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:57,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-11-02 22:26:57,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 455. [2021-11-02 22:26:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 441 states have (on average 1.2222222222222223) internal successors, (539), 454 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:57,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 539 transitions. [2021-11-02 22:26:57,900 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 539 transitions. Word has length 91 [2021-11-02 22:26:57,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:57,900 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 539 transitions. [2021-11-02 22:26:57,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 539 transitions. [2021-11-02 22:26:57,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 22:26:57,902 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:57,903 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:57,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:58,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 22:26:58,128 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:26:58,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:58,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1666608842, now seen corresponding path program 1 times [2021-11-02 22:26:58,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:58,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007045706] [2021-11-02 22:26:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:58,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:58,250 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:26:58,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997842747] [2021-11-02 22:26:58,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:58,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:58,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:58,253 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:58,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 22:26:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:59,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-02 22:26:59,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:00,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:00,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:00,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007045706] [2021-11-02 22:27:00,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:27:00,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997842747] [2021-11-02 22:27:00,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997842747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:27:00,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:27:00,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:27:00,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884149064] [2021-11-02 22:27:00,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:27:00,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:00,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:27:00,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:27:00,191 INFO L87 Difference]: Start difference. First operand 455 states and 539 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:00,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:00,580 INFO L93 Difference]: Finished difference Result 800 states and 934 transitions. [2021-11-02 22:27:00,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:27:00,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 22:27:00,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:00,588 INFO L225 Difference]: With dead ends: 800 [2021-11-02 22:27:00,588 INFO L226 Difference]: Without dead ends: 518 [2021-11-02 22:27:00,590 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:27:00,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-02 22:27:00,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 455. [2021-11-02 22:27:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 441 states have (on average 1.217687074829932) internal successors, (537), 454 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 537 transitions. [2021-11-02 22:27:00,632 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 537 transitions. Word has length 91 [2021-11-02 22:27:00,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:00,632 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 537 transitions. [2021-11-02 22:27:00,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:00,633 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 537 transitions. [2021-11-02 22:27:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 22:27:00,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:00,635 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:27:00,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:00,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-02 22:27:00,860 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:27:00,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:00,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1825168090, now seen corresponding path program 1 times [2021-11-02 22:27:00,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:00,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003117300] [2021-11-02 22:27:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:00,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:00,998 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:27:00,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832400454] [2021-11-02 22:27:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:00,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:00,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:01,000 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:01,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 22:27:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:03,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 2926 conjuncts, 133 conjunts are in the unsatisfiable core [2021-11-02 22:27:03,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:03,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:27:04,135 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-02 22:27:04,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:27:04,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:04,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 14 [2021-11-02 22:27:04,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:04,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 14 [2021-11-02 22:27:04,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:04,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 14 [2021-11-02 22:27:05,286 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-02 22:27:05,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-02 22:27:05,506 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-02 22:27:05,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 27 [2021-11-02 22:27:06,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:06,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 [2021-11-02 22:27:09,015 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 22:27:09,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 21 [2021-11-02 22:27:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:09,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:09,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003117300] [2021-11-02 22:27:09,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:27:09,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832400454] [2021-11-02 22:27:09,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832400454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:27:09,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:27:09,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-02 22:27:09,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556801027] [2021-11-02 22:27:09,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 22:27:09,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:09,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 22:27:09,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:27:09,239 INFO L87 Difference]: Start difference. First operand 455 states and 537 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:32,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:32,498 INFO L93 Difference]: Finished difference Result 1087 states and 1274 transitions. [2021-11-02 22:27:32,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:27:32,498 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-02 22:27:32,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:32,505 INFO L225 Difference]: With dead ends: 1087 [2021-11-02 22:27:32,505 INFO L226 Difference]: Without dead ends: 912 [2021-11-02 22:27:32,506 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=171, Invalid=759, Unknown=0, NotChecked=0, Total=930 [2021-11-02 22:27:32,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-11-02 22:27:32,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 520. [2021-11-02 22:27:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 506 states have (on average 1.2193675889328064) internal successors, (617), 519 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:32,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 617 transitions. [2021-11-02 22:27:32,582 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 617 transitions. Word has length 93 [2021-11-02 22:27:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:32,583 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 617 transitions. [2021-11-02 22:27:32,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 617 transitions. [2021-11-02 22:27:32,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 22:27:32,585 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:32,586 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:27:32,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:32,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 22:27:32,812 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:27:32,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1960326116, now seen corresponding path program 1 times [2021-11-02 22:27:32,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:32,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062050525] [2021-11-02 22:27:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:32,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:32,931 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:27:32,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335304528] [2021-11-02 22:27:32,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:32,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:32,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:32,934 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:32,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 22:27:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:35,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 170 conjunts are in the unsatisfiable core [2021-11-02 22:27:35,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:35,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:27:36,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:36,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 [2021-11-02 22:27:36,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:36,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 13 [2021-11-02 22:27:36,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:36,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 [2021-11-02 22:27:37,519 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-02 22:27:37,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:27:37,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:37,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 [2021-11-02 22:27:37,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:37,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:37,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:37,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 26 [2021-11-02 22:27:37,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:37,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 31 [2021-11-02 22:27:38,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 26 [2021-11-02 22:27:38,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 [2021-11-02 22:27:38,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 40 [2021-11-02 22:27:38,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 38 [2021-11-02 22:27:38,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 35 treesize of output 26 [2021-11-02 22:27:38,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:38,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:27:39,266 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-02 22:27:39,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:27:39,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:39,699 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-02 22:27:39,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 119 treesize of output 121 [2021-11-02 22:27:39,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:39,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:39,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:39,851 INFO L354 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2021-11-02 22:27:39,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 103 [2021-11-02 22:27:39,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:39,955 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-02 22:27:39,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 100 treesize of output 91 [2021-11-02 22:27:40,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:40,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:40,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:40,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:27:40,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:40,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 60 [2021-11-02 22:27:40,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:27:40,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:40,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2021-11-02 22:27:41,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:41,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:41,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:27:41,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 35 [2021-11-02 22:27:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:43,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:43,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062050525] [2021-11-02 22:27:43,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:27:43,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335304528] [2021-11-02 22:27:43,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335304528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:27:43,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:27:43,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-02 22:27:43,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096042418] [2021-11-02 22:27:43,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-02 22:27:43,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:43,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-02 22:27:43,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2021-11-02 22:27:43,104 INFO L87 Difference]: Start difference. First operand 520 states and 617 transitions. Second operand has 27 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 27 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:21,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:21,767 INFO L93 Difference]: Finished difference Result 1102 states and 1303 transitions. [2021-11-02 22:28:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 22:28:21,768 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 27 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-02 22:28:21,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:21,772 INFO L225 Difference]: With dead ends: 1102 [2021-11-02 22:28:21,772 INFO L226 Difference]: Without dead ends: 847 [2021-11-02 22:28:21,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=280, Invalid=1526, Unknown=0, NotChecked=0, Total=1806 [2021-11-02 22:28:21,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-02 22:28:21,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 679. [2021-11-02 22:28:21,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 665 states have (on average 1.219548872180451) internal successors, (811), 678 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 811 transitions. [2021-11-02 22:28:21,837 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 811 transitions. Word has length 93 [2021-11-02 22:28:21,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:21,838 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 811 transitions. [2021-11-02 22:28:21,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 27 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:21,838 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 811 transitions. [2021-11-02 22:28:21,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 22:28:21,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:21,841 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:28:21,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:22,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:22,055 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:28:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1327296740, now seen corresponding path program 1 times [2021-11-02 22:28:22,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:22,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884828362] [2021-11-02 22:28:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:22,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:22,157 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:28:22,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552299479] [2021-11-02 22:28:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:22,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:22,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:22,159 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:22,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 22:35:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:04,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 2923 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-02 22:35:04,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:35:05,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 22 [2021-11-02 22:35:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:05,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:05,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884828362] [2021-11-02 22:35:05,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:35:05,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552299479] [2021-11-02 22:35:05,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552299479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:05,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:05,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 22:35:05,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97230718] [2021-11-02 22:35:05,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:35:05,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:05,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:35:05,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:35:05,654 INFO L87 Difference]: Start difference. First operand 679 states and 811 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:21,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:21,375 INFO L93 Difference]: Finished difference Result 1180 states and 1406 transitions. [2021-11-02 22:35:21,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:35:21,376 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-02 22:35:21,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:21,378 INFO L225 Difference]: With dead ends: 1180 [2021-11-02 22:35:21,378 INFO L226 Difference]: Without dead ends: 518 [2021-11-02 22:35:21,379 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:35:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-02 22:35:21,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 517. [2021-11-02 22:35:21,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 503 states have (on average 1.216699801192843) internal successors, (612), 516 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:21,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 612 transitions. [2021-11-02 22:35:21,421 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 612 transitions. Word has length 93 [2021-11-02 22:35:21,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:21,421 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 612 transitions. [2021-11-02 22:35:21,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:21,422 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 612 transitions. [2021-11-02 22:35:21,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 22:35:21,423 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:21,424 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:35:21,639 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forcibly destroying the process [2021-11-02 22:35:21,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:35:21,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:35:21,666 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:35:21,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:21,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2129566344, now seen corresponding path program 1 times [2021-11-02 22:35:21,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:21,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780575720] [2021-11-02 22:35:21,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:21,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:21,756 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:35:21,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859109046] [2021-11-02 22:35:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:21,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:35:21,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:35:21,770 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:35:21,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-02 22:35:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:23,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-02 22:35:23,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:35:25,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:35:25,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 49 treesize of output 37 [2021-11-02 22:35:25,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:35:25,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 22 [2021-11-02 22:35:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:41,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:41,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780575720] [2021-11-02 22:35:41,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:35:41,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859109046] [2021-11-02 22:35:41,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859109046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:41,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:41,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:35:41,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677584585] [2021-11-02 22:35:41,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:35:41,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:41,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:35:41,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=246, Unknown=7, NotChecked=0, Total=306 [2021-11-02 22:35:41,154 INFO L87 Difference]: Start difference. First operand 517 states and 612 transitions. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:02,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:02,614 INFO L93 Difference]: Finished difference Result 1345 states and 1574 transitions. [2021-11-02 22:36:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:36:02,615 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-02 22:36:02,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:02,620 INFO L225 Difference]: With dead ends: 1345 [2021-11-02 22:36:02,620 INFO L226 Difference]: Without dead ends: 1089 [2021-11-02 22:36:02,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=445, Invalid=1440, Unknown=7, NotChecked=0, Total=1892 [2021-11-02 22:36:02,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2021-11-02 22:36:02,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 789. [2021-11-02 22:36:02,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 775 states have (on average 1.2103225806451612) internal successors, (938), 788 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:02,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 938 transitions. [2021-11-02 22:36:02,723 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 938 transitions. Word has length 96 [2021-11-02 22:36:02,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:02,724 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 938 transitions. [2021-11-02 22:36:02,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:02,724 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 938 transitions. [2021-11-02 22:36:02,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 22:36:02,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:02,727 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:02,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:36:02,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:02,952 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:36:02,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:02,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1532371576, now seen corresponding path program 1 times [2021-11-02 22:36:02,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:02,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448845564] [2021-11-02 22:36:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:02,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:03,067 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:36:03,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462330653] [2021-11-02 22:36:03,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:03,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:03,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:03,069 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:36:03,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-02 22:36:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:05,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 112 conjunts are in the unsatisfiable core [2021-11-02 22:36:05,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:36:05,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:36:06,628 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-02 22:36:06,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 20 [2021-11-02 22:36:06,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:36:06,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 14 [2021-11-02 22:36:07,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:36:07,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 14 [2021-11-02 22:36:07,776 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-02 22:36:07,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 23 treesize of output 28 [2021-11-02 22:36:07,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:36:07,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 14 [2021-11-02 22:36:08,233 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-02 22:36:08,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 19 [2021-11-02 22:36:08,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:36:08,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 14 [2021-11-02 22:36:08,808 INFO L354 Elim1Store]: treesize reduction 118, result has 14.5 percent of original size [2021-11-02 22:36:08,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 51 [2021-11-02 22:36:09,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 [2021-11-02 22:36:11,946 INFO L354 Elim1Store]: treesize reduction 86, result has 18.9 percent of original size [2021-11-02 22:36:11,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 41 treesize of output 51 [2021-11-02 22:36:12,710 INFO L354 Elim1Store]: treesize reduction 60, result has 25.9 percent of original size [2021-11-02 22:36:12,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 40 treesize of output 50 [2021-11-02 22:36:12,871 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-02 22:36:12,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 27 [2021-11-02 22:36:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:19,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:19,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448845564] [2021-11-02 22:36:19,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:36:19,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462330653] [2021-11-02 22:36:19,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462330653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:19,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:19,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-02 22:36:19,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073398251] [2021-11-02 22:36:19,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 22:36:19,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 22:36:19,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=305, Unknown=2, NotChecked=0, Total=380 [2021-11-02 22:36:19,215 INFO L87 Difference]: Start difference. First operand 789 states and 938 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:41,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:41,700 INFO L93 Difference]: Finished difference Result 1848 states and 2193 transitions. [2021-11-02 22:36:41,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 22:36:41,701 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-02 22:36:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:41,706 INFO L225 Difference]: With dead ends: 1848 [2021-11-02 22:36:41,707 INFO L226 Difference]: Without dead ends: 1482 [2021-11-02 22:36:41,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=150, Invalid=498, Unknown=2, NotChecked=0, Total=650 [2021-11-02 22:36:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-11-02 22:36:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1036. [2021-11-02 22:36:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1022 states have (on average 1.2064579256360077) internal successors, (1233), 1035 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:41,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1233 transitions. [2021-11-02 22:36:41,821 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1233 transitions. Word has length 96 [2021-11-02 22:36:41,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:41,821 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1233 transitions. [2021-11-02 22:36:41,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:41,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1233 transitions. [2021-11-02 22:36:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 22:36:41,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:41,824 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:41,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:36:42,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-02 22:36:42,040 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:36:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:42,040 INFO L85 PathProgramCache]: Analyzing trace with hash 761638010, now seen corresponding path program 1 times [2021-11-02 22:36:42,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:42,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874011529] [2021-11-02 22:36:42,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:42,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:42,129 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:36:42,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951925536] [2021-11-02 22:36:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:42,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:42,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:42,131 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:36:42,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-02 22:36:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:44,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-02 22:36:44,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:36:44,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:36:44,748 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-02 22:36:44,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-02 22:36:44,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 23 [2021-11-02 22:36:45,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:36:45,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 32 [2021-11-02 22:36:45,563 INFO L354 Elim1Store]: treesize reduction 54, result has 36.5 percent of original size [2021-11-02 22:36:45,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 45 [2021-11-02 22:36:45,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:36:45,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 45 [2021-11-02 22:36:46,155 INFO L354 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2021-11-02 22:36:46,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 57 [2021-11-02 22:36:46,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:36:46,318 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-02 22:36:46,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 85 treesize of output 57 [2021-11-02 22:36:46,838 INFO L354 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2021-11-02 22:36:46,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 62 [2021-11-02 22:36:47,180 INFO L354 Elim1Store]: treesize reduction 110, result has 17.9 percent of original size [2021-11-02 22:36:47,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 case distinctions, treesize of input 88 treesize of output 58 [2021-11-02 22:36:47,400 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-02 22:36:47,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 51 treesize of output 23 [2021-11-02 22:36:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:47,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:47,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874011529] [2021-11-02 22:36:47,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:36:47,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951925536] [2021-11-02 22:36:47,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951925536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:47,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:47,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:36:47,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311092823] [2021-11-02 22:36:47,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:36:47,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:47,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:36:47,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:36:47,688 INFO L87 Difference]: Start difference. First operand 1036 states and 1233 transitions. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:11,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:11,402 INFO L93 Difference]: Finished difference Result 1432 states and 1697 transitions. [2021-11-02 22:37:11,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 22:37:11,403 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-02 22:37:11,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:11,407 INFO L225 Difference]: With dead ends: 1432 [2021-11-02 22:37:11,408 INFO L226 Difference]: Without dead ends: 1042 [2021-11-02 22:37:11,413 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 22:37:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2021-11-02 22:37:11,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 949. [2021-11-02 22:37:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 935 states have (on average 1.2) internal successors, (1122), 948 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1122 transitions. [2021-11-02 22:37:11,519 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1122 transitions. Word has length 96 [2021-11-02 22:37:11,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:11,520 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1122 transitions. [2021-11-02 22:37:11,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:11,520 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1122 transitions. [2021-11-02 22:37:11,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 22:37:11,523 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:11,523 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:11,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-02 22:37:11,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-02 22:37:11,740 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:37:11,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:11,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1252921130, now seen corresponding path program 1 times [2021-11-02 22:37:11,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:11,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600508950] [2021-11-02 22:37:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:11,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:11,832 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:37:11,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929245082] [2021-11-02 22:37:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:11,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:37:11,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:37:11,834 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:37:11,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-02 22:37:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:13,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2952 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:37:13,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:37:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:37:14,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:14,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600508950] [2021-11-02 22:37:14,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:37:14,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929245082] [2021-11-02 22:37:14,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929245082] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:37:14,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:37:14,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-02 22:37:14,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589585920] [2021-11-02 22:37:14,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:37:14,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:14,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:37:14,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:37:14,047 INFO L87 Difference]: Start difference. First operand 949 states and 1122 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:14,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:14,178 INFO L93 Difference]: Finished difference Result 1565 states and 1831 transitions. [2021-11-02 22:37:14,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:37:14,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-02 22:37:14,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:14,182 INFO L225 Difference]: With dead ends: 1565 [2021-11-02 22:37:14,183 INFO L226 Difference]: Without dead ends: 1115 [2021-11-02 22:37:14,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:37:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2021-11-02 22:37:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 973. [2021-11-02 22:37:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 959 states have (on average 1.1960375391032325) internal successors, (1147), 972 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:14,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1147 transitions. [2021-11-02 22:37:14,299 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1147 transitions. Word has length 97 [2021-11-02 22:37:14,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:14,299 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1147 transitions. [2021-11-02 22:37:14,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:14,300 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1147 transitions. [2021-11-02 22:37:14,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 22:37:14,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:14,303 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:14,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-02 22:37:14,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-02 22:37:14,528 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:37:14,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:14,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1171157614, now seen corresponding path program 1 times [2021-11-02 22:37:14,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:14,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655913623] [2021-11-02 22:37:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:14,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:14,612 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:37:14,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767045491] [2021-11-02 22:37:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:14,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:37:14,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:37:14,614 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:37:14,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-02 22:37:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:17,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 100 conjunts are in the unsatisfiable core [2021-11-02 22:37:17,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:37:18,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:37:18,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 40 [2021-11-02 22:37:18,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:37:18,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 25 [2021-11-02 22:37:24,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 48 treesize of output 36 [2021-11-02 22:37:24,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 21 [2021-11-02 22:37:24,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 28 [2021-11-02 22:37:24,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 20 [2021-11-02 22:37:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:37:24,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:24,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655913623] [2021-11-02 22:37:24,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:37:24,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767045491] [2021-11-02 22:37:24,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767045491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:24,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:24,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 22:37:24,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972407952] [2021-11-02 22:37:24,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 22:37:24,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:24,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 22:37:24,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=171, Unknown=2, NotChecked=0, Total=210 [2021-11-02 22:37:24,310 INFO L87 Difference]: Start difference. First operand 973 states and 1147 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:44,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:44,392 INFO L93 Difference]: Finished difference Result 1928 states and 2255 transitions. [2021-11-02 22:37:44,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:37:44,393 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-02 22:37:44,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:44,400 INFO L225 Difference]: With dead ends: 1928 [2021-11-02 22:37:44,400 INFO L226 Difference]: Without dead ends: 1707 [2021-11-02 22:37:44,401 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=408, Invalid=1230, Unknown=2, NotChecked=0, Total=1640 [2021-11-02 22:37:44,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-11-02 22:37:44,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1381. [2021-11-02 22:37:44,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1367 states have (on average 1.1923920994879298) internal successors, (1630), 1380 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1630 transitions. [2021-11-02 22:37:44,571 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1630 transitions. Word has length 98 [2021-11-02 22:37:44,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:44,572 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 1630 transitions. [2021-11-02 22:37:44,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:44,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1630 transitions. [2021-11-02 22:37:44,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 22:37:44,575 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:44,576 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:44,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-02 22:37:44,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:37:44,796 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:37:44,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:44,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1974445650, now seen corresponding path program 1 times [2021-11-02 22:37:44,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:44,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726820306] [2021-11-02 22:37:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:44,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:44,878 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:37:44,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781490394] [2021-11-02 22:37:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:44,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:37:44,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:37:44,880 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:37:44,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-02 22:37:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:47,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 105 conjunts are in the unsatisfiable core [2021-11-02 22:37:47,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:37:47,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-02 22:37:47,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:37:47,991 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 22:37:47,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 31 treesize of output 26 [2021-11-02 22:37:49,070 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 22:37:49,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 29 treesize of output 24 [2021-11-02 22:37:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:37:49,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:49,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726820306] [2021-11-02 22:37:49,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:37:49,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781490394] [2021-11-02 22:37:49,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781490394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:49,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:49,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 22:37:49,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742563123] [2021-11-02 22:37:49,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 22:37:49,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:49,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 22:37:49,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:37:49,361 INFO L87 Difference]: Start difference. First operand 1381 states and 1630 transitions. Second operand has 14 states, 14 states have (on average 7.0) internal successors, (98), 14 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:38:10,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:38:10,818 INFO L93 Difference]: Finished difference Result 3070 states and 3587 transitions. [2021-11-02 22:38:10,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 22:38:10,819 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.0) internal successors, (98), 14 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-02 22:38:10,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:38:10,829 INFO L225 Difference]: With dead ends: 3070 [2021-11-02 22:38:10,829 INFO L226 Difference]: Without dead ends: 2761 [2021-11-02 22:38:10,830 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=475, Invalid=1247, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 22:38:10,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-11-02 22:38:10,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 1423. [2021-11-02 22:38:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1409 states have (on average 1.1852377572746629) internal successors, (1670), 1422 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:38:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1670 transitions. [2021-11-02 22:38:10,985 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1670 transitions. Word has length 98 [2021-11-02 22:38:10,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:38:10,986 INFO L470 AbstractCegarLoop]: Abstraction has 1423 states and 1670 transitions. [2021-11-02 22:38:10,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.0) internal successors, (98), 14 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:38:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1670 transitions. [2021-11-02 22:38:10,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 22:38:10,989 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:38:10,989 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:38:11,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-02 22:38:11,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-02 22:38:11,204 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 22:38:11,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:38:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1946822122, now seen corresponding path program 2 times [2021-11-02 22:38:11,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:38:11,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483329791] [2021-11-02 22:38:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:38:11,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:38:11,294 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:38:11,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458972128] [2021-11-02 22:38:11,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:38:11,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:38:11,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:38:11,295 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:38:11,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2244a9-b012-47a9-947f-7040add5eaf8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process