./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8 --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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:06:02,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:06:02,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:06:02,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:06:02,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:06:02,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:06:02,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:06:02,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:06:02,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:06:02,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:06:02,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:06:02,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:06:02,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:06:02,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:06:02,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:06:02,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:06:02,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:06:02,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:06:02,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:06:02,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:06:02,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:06:02,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:06:02,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:06:02,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:06:02,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:06:02,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:06:02,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:06:02,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:06:02,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:06:02,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:06:02,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:06:02,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:06:02,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:06:02,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:06:02,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:06:02,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:06:02,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:06:02,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:06:02,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:06:02,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:06:02,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:06:02,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 12:06:02,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:06:02,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:06:02,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:06:02,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:06:02,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:06:02,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:06:02,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:06:02,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:06:02,955 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:06:02,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:06:02,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:06:02,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:06:02,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:06:02,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:06:02,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:06:02,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:06:02,958 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:06:02,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:06:02,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:06:02,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:06:02,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:06:02,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:06:02,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:06:02,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:06:02,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:06:02,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:06:02,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:06:02,961 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:06:02,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:06:02,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:06:02,961 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_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2022-11-16 12:06:03,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:06:03,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:06:03,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:06:03,382 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:06:03,383 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:06:03,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-16 12:06:03,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/data/d594ad26d/d3b7a117e5c6419b96939601d816fa34/FLAGa33836bf1 [2022-11-16 12:06:04,248 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:06:04,249 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-16 12:06:04,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/data/d594ad26d/d3b7a117e5c6419b96939601d816fa34/FLAGa33836bf1 [2022-11-16 12:06:04,326 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/data/d594ad26d/d3b7a117e5c6419b96939601d816fa34 [2022-11-16 12:06:04,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:06:04,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:06:04,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:06:04,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:06:04,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:06:04,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:06:04" (1/1) ... [2022-11-16 12:06:04,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e0dbb8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:04, skipping insertion in model container [2022-11-16 12:06:04,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:06:04" (1/1) ... [2022-11-16 12:06:04,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:06:04,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:06:04,787 WARN L229 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_2be4683f-7372-4247-8e9e-600287cf54bf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-16 12:06:04,796 WARN L229 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_2be4683f-7372-4247-8e9e-600287cf54bf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-16 12:06:05,786 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:05,791 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:05,793 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:05,794 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:05,795 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:05,826 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:05,840 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:05,842 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:05,850 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:05,852 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:05,853 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:05,854 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:05,854 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,250 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 12:06:06,252 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 12:06:06,253 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 12:06:06,255 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 12:06:06,256 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 12:06:06,257 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 12:06:06,258 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 12:06:06,259 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 12:06:06,259 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 12:06:06,260 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 12:06:06,412 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 12:06:06,465 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,465 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,472 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,479 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,614 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,615 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,616 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,617 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,617 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,620 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,621 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,624 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,624 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,625 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,625 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,626 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,627 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,631 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,632 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,632 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,634 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,646 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,646 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,666 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,667 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,668 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:06:06,758 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:06:06,788 WARN L229 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_2be4683f-7372-4247-8e9e-600287cf54bf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-16 12:06:06,790 WARN L229 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_2be4683f-7372-4247-8e9e-600287cf54bf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-16 12:06:06,851 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,851 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,852 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,853 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,853 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,868 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,869 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,870 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,870 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,871 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,872 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,872 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,872 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:06,927 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 12:06:06,932 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 12:06:06,932 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 12:06:06,933 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 12:06:06,934 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 12:06:06,935 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 12:06:06,936 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 12:06:06,936 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 12:06:06,937 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 12:06:06,937 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 12:06:06,978 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 12:06:06,992 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,024 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,025 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,035 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,077 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,077 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,078 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,079 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,079 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,080 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,080 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,081 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,082 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,082 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,083 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,083 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,084 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,085 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,086 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,086 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,087 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,090 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,091 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,101 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,102 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,102 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:06:07,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:06:07,316 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:06:07,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:07 WrapperNode [2022-11-16 12:06:07,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:06:07,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:06:07,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:06:07,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:06:07,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:07" (1/1) ... [2022-11-16 12:06:07,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:07" (1/1) ... [2022-11-16 12:06:07,508 INFO L138 Inliner]: procedures = 697, calls = 1905, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 840 [2022-11-16 12:06:07,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:06:07,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:06:07,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:06:07,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:06:07,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:07" (1/1) ... [2022-11-16 12:06:07,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:07" (1/1) ... [2022-11-16 12:06:07,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:07" (1/1) ... [2022-11-16 12:06:07,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:07" (1/1) ... [2022-11-16 12:06:07,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:07" (1/1) ... [2022-11-16 12:06:07,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:07" (1/1) ... [2022-11-16 12:06:07,589 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:07" (1/1) ... [2022-11-16 12:06:07,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:07" (1/1) ... [2022-11-16 12:06:07,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:06:07,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:06:07,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:06:07,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:06:07,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:07" (1/1) ... [2022-11-16 12:06:07,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:06:07,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:07,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:06:07,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:06:07,708 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-16 12:06:07,709 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-16 12:06:07,709 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-16 12:06:07,709 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-16 12:06:07,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:06:07,709 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-16 12:06:07,710 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-16 12:06:07,710 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-16 12:06:07,710 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-16 12:06:07,711 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 12:06:07,711 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 12:06:07,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:06:07,711 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-16 12:06:07,711 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-16 12:06:07,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:06:07,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:06:07,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:06:07,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:06:07,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:06:07,716 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-16 12:06:07,717 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-16 12:06:07,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:06:07,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:06:07,719 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 12:06:07,719 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 12:06:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2022-11-16 12:06:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2022-11-16 12:06:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-16 12:06:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-16 12:06:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-16 12:06:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-16 12:06:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-16 12:06:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-16 12:06:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-16 12:06:07,728 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-16 12:06:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 12:06:07,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 12:06:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-16 12:06:07,728 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-16 12:06:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:06:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:06:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2022-11-16 12:06:07,729 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2022-11-16 12:06:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:06:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-16 12:06:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-16 12:06:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 12:06:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 12:06:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-16 12:06:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-16 12:06:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:06:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-16 12:06:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-16 12:06:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-16 12:06:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-16 12:06:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 12:06:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 12:06:07,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:06:08,200 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:06:08,203 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:06:09,717 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:06:09,733 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:06:09,734 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-16 12:06:09,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:06:09 BoogieIcfgContainer [2022-11-16 12:06:09,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:06:09,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:06:09,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:06:09,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:06:09,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:06:04" (1/3) ... [2022-11-16 12:06:09,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8c86b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:06:09, skipping insertion in model container [2022-11-16 12:06:09,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:07" (2/3) ... [2022-11-16 12:06:09,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8c86b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:06:09, skipping insertion in model container [2022-11-16 12:06:09,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:06:09" (3/3) ... [2022-11-16 12:06:09,745 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2022-11-16 12:06:09,764 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:06:09,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:06:09,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:06:09,832 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f6379e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:06:09,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:06:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 197 states have (on average 1.233502538071066) internal successors, (243), 198 states have internal predecessors, (243), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-16 12:06:09,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 12:06:09,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:09,857 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:09,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:09,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:09,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1627804587, now seen corresponding path program 1 times [2022-11-16 12:06:09,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:09,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249381912] [2022-11-16 12:06:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:09,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:06:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:06:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:06:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:06:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:06:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 12:06:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 12:06:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:06:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:06:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 12:06:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:06:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:06:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 12:06:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:06:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:06:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 12:06:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-16 12:06:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-16 12:06:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-16 12:06:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-16 12:06:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-16 12:06:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:11,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-16 12:06:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 12:06:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-16 12:06:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:11,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:06:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:11,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-16 12:06:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-16 12:06:11,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:11,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249381912] [2022-11-16 12:06:11,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249381912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:11,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:11,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:06:11,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254675380] [2022-11-16 12:06:11,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:11,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:06:11,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:11,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:06:11,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:06:11,098 INFO L87 Difference]: Start difference. First operand has 326 states, 197 states have (on average 1.233502538071066) internal successors, (243), 198 states have internal predecessors, (243), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-16 12:06:12,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:12,813 INFO L93 Difference]: Finished difference Result 731 states and 1164 transitions. [2022-11-16 12:06:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:06:12,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2022-11-16 12:06:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:12,830 INFO L225 Difference]: With dead ends: 731 [2022-11-16 12:06:12,831 INFO L226 Difference]: Without dead ends: 423 [2022-11-16 12:06:12,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:06:12,841 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 130 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:12,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 582 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 12:06:12,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-16 12:06:12,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 321. [2022-11-16 12:06:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 193 states have (on average 1.2020725388601037) internal successors, (232), 194 states have internal predecessors, (232), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-16 12:06:12,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 439 transitions. [2022-11-16 12:06:12,927 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 439 transitions. Word has length 156 [2022-11-16 12:06:12,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:12,928 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 439 transitions. [2022-11-16 12:06:12,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-16 12:06:12,929 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 439 transitions. [2022-11-16 12:06:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 12:06:12,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:12,934 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:12,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:06:12,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:12,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1159929871, now seen corresponding path program 1 times [2022-11-16 12:06:12,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:12,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483539750] [2022-11-16 12:06:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:12,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:06:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:06:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:06:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:06:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:06:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 12:06:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 12:06:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:06:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:06:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 12:06:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:06:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:06:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 12:06:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:06:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:06:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 12:06:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-16 12:06:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-16 12:06:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-16 12:06:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-16 12:06:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-16 12:06:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-16 12:06:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 12:06:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-16 12:06:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:06:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-16 12:06:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-11-16 12:06:13,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:13,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483539750] [2022-11-16 12:06:13,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483539750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:13,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209516038] [2022-11-16 12:06:13,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:13,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:13,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:13,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:13,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:06:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:14,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:06:14,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:14,712 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:06:14,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:14,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209516038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:14,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:06:14,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-16 12:06:14,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624099389] [2022-11-16 12:06:14,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:14,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:06:14,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:14,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:06:14,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:06:14,716 INFO L87 Difference]: Start difference. First operand 321 states and 439 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-16 12:06:15,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:15,045 INFO L93 Difference]: Finished difference Result 596 states and 820 transitions. [2022-11-16 12:06:15,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:06:15,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2022-11-16 12:06:15,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:15,049 INFO L225 Difference]: With dead ends: 596 [2022-11-16 12:06:15,049 INFO L226 Difference]: Without dead ends: 323 [2022-11-16 12:06:15,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:06:15,053 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 456 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:15,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1495 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:06:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-16 12:06:15,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-11-16 12:06:15,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 194 states have (on average 1.2010309278350515) internal successors, (233), 196 states have internal predecessors, (233), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2022-11-16 12:06:15,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 444 transitions. [2022-11-16 12:06:15,087 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 444 transitions. Word has length 156 [2022-11-16 12:06:15,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:15,088 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 444 transitions. [2022-11-16 12:06:15,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-16 12:06:15,089 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 444 transitions. [2022-11-16 12:06:15,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-16 12:06:15,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:15,092 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:15,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:15,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:15,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:15,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:15,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1288218285, now seen corresponding path program 1 times [2022-11-16 12:06:15,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:15,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452165026] [2022-11-16 12:06:15,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:15,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:06:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:06:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:15,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:06:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:06:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:06:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:15,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 12:06:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 12:06:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:06:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:15,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:06:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:15,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 12:06:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:15,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:06:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:15,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:06:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:15,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 12:06:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:06:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:06:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 12:06:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:06:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:06:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 12:06:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:06:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 12:06:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-16 12:06:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-16 12:06:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-16 12:06:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-16 12:06:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-16 12:06:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-16 12:06:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-16 12:06:16,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:16,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452165026] [2022-11-16 12:06:16,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452165026] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:16,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737851741] [2022-11-16 12:06:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:16,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:16,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:16,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:16,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:06:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:06:16,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:17,103 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:06:17,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:17,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737851741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:17,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:06:17,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-16 12:06:17,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904751506] [2022-11-16 12:06:17,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:17,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:06:17,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:17,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:06:17,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:06:17,107 INFO L87 Difference]: Start difference. First operand 323 states and 444 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-16 12:06:17,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:17,679 INFO L93 Difference]: Finished difference Result 619 states and 867 transitions. [2022-11-16 12:06:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:06:17,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2022-11-16 12:06:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:17,685 INFO L225 Difference]: With dead ends: 619 [2022-11-16 12:06:17,686 INFO L226 Difference]: Without dead ends: 344 [2022-11-16 12:06:17,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:06:17,692 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 518 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:17,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 2155 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:06:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-16 12:06:17,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 342. [2022-11-16 12:06:17,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2022-11-16 12:06:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-16 12:06:17,754 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 164 [2022-11-16 12:06:17,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:17,757 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-16 12:06:17,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-16 12:06:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-16 12:06:17,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-16 12:06:17,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:17,764 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:17,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:17,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:17,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:17,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:17,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1645223367, now seen corresponding path program 1 times [2022-11-16 12:06:17,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:17,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103215258] [2022-11-16 12:06:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:17,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:18,069 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:18,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5997145] [2022-11-16 12:06:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:18,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:18,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:18,072 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:18,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:06:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:06:18,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:06:18,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:18,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:18,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103215258] [2022-11-16 12:06:18,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:18,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5997145] [2022-11-16 12:06:18,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5997145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:18,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:18,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:06:18,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785866784] [2022-11-16 12:06:18,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:18,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:06:18,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:18,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:06:18,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:06:18,861 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-16 12:06:19,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:19,267 INFO L93 Difference]: Finished difference Result 644 states and 916 transitions. [2022-11-16 12:06:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:06:19,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 179 [2022-11-16 12:06:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:19,271 INFO L225 Difference]: With dead ends: 644 [2022-11-16 12:06:19,272 INFO L226 Difference]: Without dead ends: 350 [2022-11-16 12:06:19,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:06:19,274 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 480 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:19,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1829 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:06:19,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-16 12:06:19,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 342. [2022-11-16 12:06:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2022-11-16 12:06:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-16 12:06:19,305 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 179 [2022-11-16 12:06:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:19,306 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-16 12:06:19,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-16 12:06:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-16 12:06:19,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-16 12:06:19,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:19,310 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:19,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:19,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-16 12:06:19,520 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:19,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:19,521 INFO L85 PathProgramCache]: Analyzing trace with hash 706739126, now seen corresponding path program 1 times [2022-11-16 12:06:19,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:19,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113718702] [2022-11-16 12:06:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:19,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:19,611 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:19,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29332616] [2022-11-16 12:06:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:19,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:19,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:19,612 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:19,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:06:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:20,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 2593 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:06:20,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-16 12:06:20,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:20,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:20,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113718702] [2022-11-16 12:06:20,470 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:20,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29332616] [2022-11-16 12:06:20,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29332616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:20,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:20,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:06:20,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741892833] [2022-11-16 12:06:20,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:20,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:06:20,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:20,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:06:20,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:06:20,473 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-16 12:06:21,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:21,136 INFO L93 Difference]: Finished difference Result 654 states and 929 transitions. [2022-11-16 12:06:21,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:06:21,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 195 [2022-11-16 12:06:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:21,141 INFO L225 Difference]: With dead ends: 654 [2022-11-16 12:06:21,141 INFO L226 Difference]: Without dead ends: 360 [2022-11-16 12:06:21,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:06:21,144 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 551 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:21,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 2456 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:06:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-16 12:06:21,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 342. [2022-11-16 12:06:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2022-11-16 12:06:21,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-16 12:06:21,180 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 195 [2022-11-16 12:06:21,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:21,181 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-16 12:06:21,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-16 12:06:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-16 12:06:21,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-16 12:06:21,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:21,187 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:21,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:21,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:21,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:21,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1820952612, now seen corresponding path program 2 times [2022-11-16 12:06:21,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:21,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355298736] [2022-11-16 12:06:21,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:21,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:21,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:21,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654350641] [2022-11-16 12:06:21,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:06:21,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:21,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:21,491 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:21,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:06:22,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:06:22,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:06:22,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:06:22,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-16 12:06:22,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:22,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:22,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355298736] [2022-11-16 12:06:22,376 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:22,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654350641] [2022-11-16 12:06:22,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654350641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:22,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:22,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:06:22,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120933027] [2022-11-16 12:06:22,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:22,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:06:22,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:22,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:06:22,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:06:22,379 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-16 12:06:22,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:22,871 INFO L93 Difference]: Finished difference Result 604 states and 860 transitions. [2022-11-16 12:06:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:06:22,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 210 [2022-11-16 12:06:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:22,880 INFO L225 Difference]: With dead ends: 604 [2022-11-16 12:06:22,880 INFO L226 Difference]: Without dead ends: 344 [2022-11-16 12:06:22,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:06:22,884 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 484 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:22,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 2116 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:06:22,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-16 12:06:22,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2022-11-16 12:06:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 211 states have (on average 1.2132701421800949) internal successors, (256), 214 states have internal predecessors, (256), 106 states have call successors, (106), 23 states have call predecessors, (106), 26 states have return successors, (122), 106 states have call predecessors, (122), 105 states have call successors, (122) [2022-11-16 12:06:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 484 transitions. [2022-11-16 12:06:22,912 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 484 transitions. Word has length 210 [2022-11-16 12:06:22,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:22,913 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 484 transitions. [2022-11-16 12:06:22,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-16 12:06:22,913 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 484 transitions. [2022-11-16 12:06:22,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-16 12:06:22,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:22,917 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:22,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:23,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:23,127 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:23,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1993898586, now seen corresponding path program 1 times [2022-11-16 12:06:23,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:23,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933695604] [2022-11-16 12:06:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:23,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:23,225 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:23,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178970225] [2022-11-16 12:06:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:23,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:23,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:23,227 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:23,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:06:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:23,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 2925 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:06:23,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-16 12:06:24,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:24,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:24,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933695604] [2022-11-16 12:06:24,097 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:24,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178970225] [2022-11-16 12:06:24,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178970225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:24,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:24,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:06:24,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016452034] [2022-11-16 12:06:24,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:24,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:06:24,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:24,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:06:24,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:06:24,100 INFO L87 Difference]: Start difference. First operand 344 states and 484 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2022-11-16 12:06:24,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:24,689 INFO L93 Difference]: Finished difference Result 609 states and 867 transitions. [2022-11-16 12:06:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:06:24,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) Word has length 233 [2022-11-16 12:06:24,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:24,693 INFO L225 Difference]: With dead ends: 609 [2022-11-16 12:06:24,694 INFO L226 Difference]: Without dead ends: 347 [2022-11-16 12:06:24,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:06:24,696 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 508 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:24,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2415 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:06:24,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-11-16 12:06:24,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2022-11-16 12:06:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 212 states have (on average 1.2122641509433962) internal successors, (257), 215 states have internal predecessors, (257), 106 states have call successors, (106), 23 states have call predecessors, (106), 26 states have return successors, (122), 106 states have call predecessors, (122), 105 states have call successors, (122) [2022-11-16 12:06:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 485 transitions. [2022-11-16 12:06:24,719 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 485 transitions. Word has length 233 [2022-11-16 12:06:24,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:24,720 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 485 transitions. [2022-11-16 12:06:24,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2022-11-16 12:06:24,720 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 485 transitions. [2022-11-16 12:06:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-16 12:06:24,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:24,724 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:06:24,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:24,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:24,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:24,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:24,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1572092851, now seen corresponding path program 1 times [2022-11-16 12:06:24,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:24,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523097264] [2022-11-16 12:06:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:24,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:25,012 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:25,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037258472] [2022-11-16 12:06:25,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:25,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:25,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:25,014 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:25,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:06:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:25,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 2856 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:06:25,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-16 12:06:25,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-11-16 12:06:26,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:26,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523097264] [2022-11-16 12:06:26,461 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:26,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037258472] [2022-11-16 12:06:26,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037258472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:06:26,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:06:26,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-16 12:06:26,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217171168] [2022-11-16 12:06:26,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:26,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:06:26,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:26,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:06:26,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:06:26,465 INFO L87 Difference]: Start difference. First operand 345 states and 485 transitions. Second operand has 16 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (57), 4 states have call predecessors, (57), 4 states have return successors, (53), 5 states have call predecessors, (53), 9 states have call successors, (53) [2022-11-16 12:06:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:27,320 INFO L93 Difference]: Finished difference Result 627 states and 892 transitions. [2022-11-16 12:06:27,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:06:27,320 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (57), 4 states have call predecessors, (57), 4 states have return successors, (53), 5 states have call predecessors, (53), 9 states have call successors, (53) Word has length 234 [2022-11-16 12:06:27,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:27,324 INFO L225 Difference]: With dead ends: 627 [2022-11-16 12:06:27,324 INFO L226 Difference]: Without dead ends: 364 [2022-11-16 12:06:27,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 453 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:06:27,329 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 601 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 3377 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:27,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 3377 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:06:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-11-16 12:06:27,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 358. [2022-11-16 12:06:27,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 224 states have (on average 1.2232142857142858) internal successors, (274), 226 states have internal predecessors, (274), 107 states have call successors, (107), 23 states have call predecessors, (107), 26 states have return successors, (123), 108 states have call predecessors, (123), 106 states have call successors, (123) [2022-11-16 12:06:27,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 504 transitions. [2022-11-16 12:06:27,360 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 504 transitions. Word has length 234 [2022-11-16 12:06:27,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:27,361 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 504 transitions. [2022-11-16 12:06:27,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (57), 4 states have call predecessors, (57), 4 states have return successors, (53), 5 states have call predecessors, (53), 9 states have call successors, (53) [2022-11-16 12:06:27,361 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 504 transitions. [2022-11-16 12:06:27,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-16 12:06:27,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:27,365 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:27,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:27,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:27,576 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:27,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:27,577 INFO L85 PathProgramCache]: Analyzing trace with hash -755550831, now seen corresponding path program 2 times [2022-11-16 12:06:27,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:27,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035365125] [2022-11-16 12:06:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:27,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:27,670 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:27,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166930258] [2022-11-16 12:06:27,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:06:27,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:27,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:27,672 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:27,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:06:28,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:06:28,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:06:28,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 3138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:06:28,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-16 12:06:28,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:28,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035365125] [2022-11-16 12:06:28,641 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:28,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166930258] [2022-11-16 12:06:28,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166930258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:28,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:28,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:06:28,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318915956] [2022-11-16 12:06:28,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:28,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:06:28,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:28,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:06:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:06:28,644 INFO L87 Difference]: Start difference. First operand 358 states and 504 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-16 12:06:29,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:29,356 INFO L93 Difference]: Finished difference Result 641 states and 913 transitions. [2022-11-16 12:06:29,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:06:29,357 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 264 [2022-11-16 12:06:29,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:29,360 INFO L225 Difference]: With dead ends: 641 [2022-11-16 12:06:29,360 INFO L226 Difference]: Without dead ends: 370 [2022-11-16 12:06:29,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:06:29,363 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 488 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:29,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 2747 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:06:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-16 12:06:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2022-11-16 12:06:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 230 states have (on average 1.2217391304347827) internal successors, (281), 232 states have internal predecessors, (281), 112 states have call successors, (112), 24 states have call predecessors, (112), 27 states have return successors, (128), 113 states have call predecessors, (128), 111 states have call successors, (128) [2022-11-16 12:06:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 521 transitions. [2022-11-16 12:06:29,388 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 521 transitions. Word has length 264 [2022-11-16 12:06:29,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:29,389 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 521 transitions. [2022-11-16 12:06:29,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-16 12:06:29,389 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 521 transitions. [2022-11-16 12:06:29,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-16 12:06:29,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:29,395 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:29,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:29,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:29,607 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:29,608 INFO L85 PathProgramCache]: Analyzing trace with hash 854827913, now seen corresponding path program 1 times [2022-11-16 12:06:29,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:29,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381774887] [2022-11-16 12:06:29,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:29,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:29,706 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:29,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458045923] [2022-11-16 12:06:29,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:29,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:29,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:29,708 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:29,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:06:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:30,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:06:30,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-16 12:06:30,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:30,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:30,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381774887] [2022-11-16 12:06:30,725 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:30,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458045923] [2022-11-16 12:06:30,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458045923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:30,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:30,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:06:30,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134777010] [2022-11-16 12:06:30,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:30,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:06:30,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:30,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:06:30,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:06:30,728 INFO L87 Difference]: Start difference. First operand 370 states and 521 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:06:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:31,191 INFO L93 Difference]: Finished difference Result 746 states and 1072 transitions. [2022-11-16 12:06:31,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:06:31,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 294 [2022-11-16 12:06:31,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:31,196 INFO L225 Difference]: With dead ends: 746 [2022-11-16 12:06:31,197 INFO L226 Difference]: Without dead ends: 424 [2022-11-16 12:06:31,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:06:31,200 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 23 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:31,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2016 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:06:31,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-16 12:06:31,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 382. [2022-11-16 12:06:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 242 states have (on average 1.2231404958677685) internal successors, (296), 244 states have internal predecessors, (296), 112 states have call successors, (112), 24 states have call predecessors, (112), 27 states have return successors, (128), 113 states have call predecessors, (128), 111 states have call successors, (128) [2022-11-16 12:06:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 536 transitions. [2022-11-16 12:06:31,232 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 536 transitions. Word has length 294 [2022-11-16 12:06:31,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:31,232 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 536 transitions. [2022-11-16 12:06:31,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:06:31,233 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 536 transitions. [2022-11-16 12:06:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-16 12:06:31,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:31,236 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:31,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-16 12:06:31,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:06:31,449 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:31,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash -650350645, now seen corresponding path program 1 times [2022-11-16 12:06:31,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:31,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947843116] [2022-11-16 12:06:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:31,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:31,545 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:31,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1021317048] [2022-11-16 12:06:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:31,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:31,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:31,547 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:31,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:06:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:32,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 3273 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:06:32,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-16 12:06:32,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:32,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:32,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947843116] [2022-11-16 12:06:32,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:32,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021317048] [2022-11-16 12:06:32,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021317048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:32,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:32,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:06:32,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448078552] [2022-11-16 12:06:32,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:32,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:06:32,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:32,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:06:32,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:06:32,417 INFO L87 Difference]: Start difference. First operand 382 states and 536 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:06:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:32,475 INFO L93 Difference]: Finished difference Result 728 states and 1036 transitions. [2022-11-16 12:06:32,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:06:32,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 279 [2022-11-16 12:06:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:32,479 INFO L225 Difference]: With dead ends: 728 [2022-11-16 12:06:32,479 INFO L226 Difference]: Without dead ends: 394 [2022-11-16 12:06:32,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:06:32,482 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 3 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:32,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1303 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:06:32,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-16 12:06:32,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 388. [2022-11-16 12:06:32,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 248 states have (on average 1.217741935483871) internal successors, (302), 250 states have internal predecessors, (302), 112 states have call successors, (112), 24 states have call predecessors, (112), 27 states have return successors, (128), 113 states have call predecessors, (128), 111 states have call successors, (128) [2022-11-16 12:06:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 542 transitions. [2022-11-16 12:06:32,509 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 542 transitions. Word has length 279 [2022-11-16 12:06:32,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:32,510 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 542 transitions. [2022-11-16 12:06:32,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:06:32,511 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 542 transitions. [2022-11-16 12:06:32,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-16 12:06:32,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:32,513 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:32,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:32,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:32,725 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:32,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:32,725 INFO L85 PathProgramCache]: Analyzing trace with hash -351746489, now seen corresponding path program 1 times [2022-11-16 12:06:32,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:32,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526839783] [2022-11-16 12:06:32,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:32,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:32,835 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:32,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416436721] [2022-11-16 12:06:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:32,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:32,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:32,837 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:32,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:06:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:33,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 3263 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:06:33,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-11-16 12:06:33,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:33,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:33,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526839783] [2022-11-16 12:06:33,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:33,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416436721] [2022-11-16 12:06:33,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416436721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:33,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:33,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:06:33,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940213093] [2022-11-16 12:06:33,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:33,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:06:33,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:06:33,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:06:33,852 INFO L87 Difference]: Start difference. First operand 388 states and 542 transitions. Second operand has 11 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 6 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-16 12:06:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:34,769 INFO L93 Difference]: Finished difference Result 696 states and 980 transitions. [2022-11-16 12:06:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:06:34,770 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 6 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) Word has length 279 [2022-11-16 12:06:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:34,774 INFO L225 Difference]: With dead ends: 696 [2022-11-16 12:06:34,774 INFO L226 Difference]: Without dead ends: 390 [2022-11-16 12:06:34,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:06:34,778 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 579 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 2970 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:34,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 2970 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:06:34,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-16 12:06:34,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 366. [2022-11-16 12:06:34,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 228 states have (on average 1.2105263157894737) internal successors, (276), 230 states have internal predecessors, (276), 111 states have call successors, (111), 24 states have call predecessors, (111), 26 states have return successors, (123), 111 states have call predecessors, (123), 110 states have call successors, (123) [2022-11-16 12:06:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 510 transitions. [2022-11-16 12:06:34,804 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 510 transitions. Word has length 279 [2022-11-16 12:06:34,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:34,805 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 510 transitions. [2022-11-16 12:06:34,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 6 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-16 12:06:34,805 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 510 transitions. [2022-11-16 12:06:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-16 12:06:34,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:34,808 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:34,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:35,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:06:35,020 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:35,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:35,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1563569161, now seen corresponding path program 1 times [2022-11-16 12:06:35,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:35,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426648427] [2022-11-16 12:06:35,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:35,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:35,140 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:35,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776759475] [2022-11-16 12:06:35,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:35,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:35,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:35,144 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:35,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:06:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:36,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 3404 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-16 12:06:36,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:36,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-11-16 12:06:36,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-16 12:06:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2022-11-16 12:06:36,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:36,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:36,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426648427] [2022-11-16 12:06:36,939 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:36,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776759475] [2022-11-16 12:06:36,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776759475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:36,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:36,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:06:36,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328622230] [2022-11-16 12:06:36,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:36,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:06:36,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:36,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:06:36,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:06:36,944 INFO L87 Difference]: Start difference. First operand 366 states and 510 transitions. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 6 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-16 12:06:37,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:37,876 INFO L93 Difference]: Finished difference Result 723 states and 1019 transitions. [2022-11-16 12:06:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:06:37,877 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 6 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 294 [2022-11-16 12:06:37,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:37,881 INFO L225 Difference]: With dead ends: 723 [2022-11-16 12:06:37,881 INFO L226 Difference]: Without dead ends: 436 [2022-11-16 12:06:37,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 277 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:06:37,884 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 144 mSDsluCounter, 3106 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 3534 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:37,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 3534 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 479 Invalid, 0 Unknown, 83 Unchecked, 0.6s Time] [2022-11-16 12:06:37,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-11-16 12:06:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 392. [2022-11-16 12:06:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 248 states have (on average 1.2056451612903225) internal successors, (299), 250 states have internal predecessors, (299), 114 states have call successors, (114), 26 states have call predecessors, (114), 29 states have return successors, (132), 115 states have call predecessors, (132), 113 states have call successors, (132) [2022-11-16 12:06:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 545 transitions. [2022-11-16 12:06:37,917 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 545 transitions. Word has length 294 [2022-11-16 12:06:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:37,918 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 545 transitions. [2022-11-16 12:06:37,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 6 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-16 12:06:37,919 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 545 transitions. [2022-11-16 12:06:37,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-16 12:06:37,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:37,921 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:37,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:38,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:06:38,134 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:38,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:38,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1955228295, now seen corresponding path program 1 times [2022-11-16 12:06:38,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:38,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259891721] [2022-11-16 12:06:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:38,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:38,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:38,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013282961] [2022-11-16 12:06:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:38,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:38,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:38,270 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:38,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:06:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:39,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 3407 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:06:39,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-16 12:06:39,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:39,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:39,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259891721] [2022-11-16 12:06:39,164 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:39,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013282961] [2022-11-16 12:06:39,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013282961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:39,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:39,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:06:39,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806142025] [2022-11-16 12:06:39,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:39,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:06:39,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:39,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:06:39,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:06:39,166 INFO L87 Difference]: Start difference. First operand 392 states and 545 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:06:39,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:39,243 INFO L93 Difference]: Finished difference Result 742 states and 1050 transitions. [2022-11-16 12:06:39,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:06:39,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 294 [2022-11-16 12:06:39,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:39,248 INFO L225 Difference]: With dead ends: 742 [2022-11-16 12:06:39,248 INFO L226 Difference]: Without dead ends: 412 [2022-11-16 12:06:39,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:06:39,251 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 8 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:39,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1788 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:06:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-16 12:06:39,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 400. [2022-11-16 12:06:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 256 states have (on average 1.203125) internal successors, (308), 258 states have internal predecessors, (308), 114 states have call successors, (114), 26 states have call predecessors, (114), 29 states have return successors, (132), 115 states have call predecessors, (132), 113 states have call successors, (132) [2022-11-16 12:06:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 554 transitions. [2022-11-16 12:06:39,287 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 554 transitions. Word has length 294 [2022-11-16 12:06:39,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:39,287 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 554 transitions. [2022-11-16 12:06:39,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:06:39,288 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 554 transitions. [2022-11-16 12:06:39,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-16 12:06:39,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:39,290 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:39,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:39,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:39,503 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:39,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:39,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1679075718, now seen corresponding path program 1 times [2022-11-16 12:06:39,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:39,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901345295] [2022-11-16 12:06:39,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:39,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:39,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:39,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002093937] [2022-11-16 12:06:39,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:39,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:39,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:39,602 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:39,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:06:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:40,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 3406 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 12:06:40,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:41,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:06:41,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:06:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-11-16 12:06:41,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:41,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:41,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901345295] [2022-11-16 12:06:41,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:41,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002093937] [2022-11-16 12:06:41,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002093937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:41,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:41,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:06:41,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196323930] [2022-11-16 12:06:41,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:41,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:06:41,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:41,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:06:41,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:06:41,242 INFO L87 Difference]: Start difference. First operand 400 states and 554 transitions. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 7 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-16 12:06:42,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:42,563 INFO L93 Difference]: Finished difference Result 842 states and 1181 transitions. [2022-11-16 12:06:42,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:06:42,563 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 7 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 296 [2022-11-16 12:06:42,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:42,567 INFO L225 Difference]: With dead ends: 842 [2022-11-16 12:06:42,568 INFO L226 Difference]: Without dead ends: 500 [2022-11-16 12:06:42,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 281 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:06:42,571 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 120 mSDsluCounter, 4069 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 4487 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:42,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 4487 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1004 Invalid, 0 Unknown, 94 Unchecked, 1.0s Time] [2022-11-16 12:06:42,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-16 12:06:42,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 453. [2022-11-16 12:06:42,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 300 states have (on average 1.2033333333333334) internal successors, (361), 303 states have internal predecessors, (361), 118 states have call successors, (118), 28 states have call predecessors, (118), 34 states have return successors, (160), 121 states have call predecessors, (160), 117 states have call successors, (160) [2022-11-16 12:06:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 639 transitions. [2022-11-16 12:06:42,607 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 639 transitions. Word has length 296 [2022-11-16 12:06:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:42,607 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 639 transitions. [2022-11-16 12:06:42,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 7 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-16 12:06:42,608 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 639 transitions. [2022-11-16 12:06:42,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-16 12:06:42,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:42,611 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:42,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:42,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:42,825 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:42,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:42,826 INFO L85 PathProgramCache]: Analyzing trace with hash -693151046, now seen corresponding path program 1 times [2022-11-16 12:06:42,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:42,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229762504] [2022-11-16 12:06:42,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:42,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:42,920 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:42,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053840626] [2022-11-16 12:06:42,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:42,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:42,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:42,922 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:42,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:06:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:43,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 3396 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:06:43,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-11-16 12:06:43,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:43,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:43,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229762504] [2022-11-16 12:06:43,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:43,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053840626] [2022-11-16 12:06:43,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053840626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:43,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:43,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:06:43,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321221072] [2022-11-16 12:06:43,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:43,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:06:43,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:43,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:06:43,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:06:43,874 INFO L87 Difference]: Start difference. First operand 453 states and 639 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:06:43,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:43,944 INFO L93 Difference]: Finished difference Result 861 states and 1262 transitions. [2022-11-16 12:06:43,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:06:43,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 296 [2022-11-16 12:06:43,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:43,952 INFO L225 Difference]: With dead ends: 861 [2022-11-16 12:06:43,953 INFO L226 Difference]: Without dead ends: 456 [2022-11-16 12:06:43,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:06:43,959 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 7 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:43,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1309 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:06:43,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-11-16 12:06:43,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 453. [2022-11-16 12:06:44,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 300 states have (on average 1.2) internal successors, (360), 303 states have internal predecessors, (360), 118 states have call successors, (118), 28 states have call predecessors, (118), 34 states have return successors, (160), 121 states have call predecessors, (160), 117 states have call successors, (160) [2022-11-16 12:06:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 638 transitions. [2022-11-16 12:06:44,004 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 638 transitions. Word has length 296 [2022-11-16 12:06:44,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:44,005 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 638 transitions. [2022-11-16 12:06:44,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:06:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 638 transitions. [2022-11-16 12:06:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-16 12:06:44,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:44,009 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:44,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:44,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:06:44,220 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:44,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:44,220 INFO L85 PathProgramCache]: Analyzing trace with hash -114991686, now seen corresponding path program 1 times [2022-11-16 12:06:44,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:44,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739190796] [2022-11-16 12:06:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:44,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:44,305 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:44,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485984261] [2022-11-16 12:06:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:44,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:44,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:44,307 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:44,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:06:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:45,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:06:45,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:45,265 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-11-16 12:06:45,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:45,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:45,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739190796] [2022-11-16 12:06:45,266 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:45,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485984261] [2022-11-16 12:06:45,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485984261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:45,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:45,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:06:45,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827131702] [2022-11-16 12:06:45,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:45,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:06:45,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:45,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:06:45,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:06:45,269 INFO L87 Difference]: Start difference. First operand 453 states and 638 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:06:45,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:45,606 INFO L93 Difference]: Finished difference Result 865 states and 1276 transitions. [2022-11-16 12:06:45,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:06:45,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 300 [2022-11-16 12:06:45,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:45,610 INFO L225 Difference]: With dead ends: 865 [2022-11-16 12:06:45,611 INFO L226 Difference]: Without dead ends: 460 [2022-11-16 12:06:45,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:06:45,615 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 15 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:45,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1652 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:06:45,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-16 12:06:45,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 454. [2022-11-16 12:06:45,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 301 states have (on average 1.1993355481727574) internal successors, (361), 304 states have internal predecessors, (361), 118 states have call successors, (118), 28 states have call predecessors, (118), 34 states have return successors, (160), 121 states have call predecessors, (160), 117 states have call successors, (160) [2022-11-16 12:06:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 639 transitions. [2022-11-16 12:06:45,650 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 639 transitions. Word has length 300 [2022-11-16 12:06:45,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:45,651 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 639 transitions. [2022-11-16 12:06:45,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:06:45,651 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 639 transitions. [2022-11-16 12:06:45,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-16 12:06:45,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:45,654 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:45,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:45,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:06:45,872 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:45,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:45,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1775518330, now seen corresponding path program 1 times [2022-11-16 12:06:45,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:45,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020681238] [2022-11-16 12:06:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:45,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:45,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:45,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225616703] [2022-11-16 12:06:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:45,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:45,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:45,990 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:46,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:06:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:46,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 3416 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-16 12:06:46,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:47,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-11-16 12:06:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-11-16 12:06:47,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:47,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:47,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020681238] [2022-11-16 12:06:47,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:47,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225616703] [2022-11-16 12:06:47,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225616703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:47,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:47,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:06:47,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065354610] [2022-11-16 12:06:47,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:47,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:06:47,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:47,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:06:47,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:06:47,165 INFO L87 Difference]: Start difference. First operand 454 states and 639 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 6 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2022-11-16 12:06:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:48,151 INFO L93 Difference]: Finished difference Result 886 states and 1284 transitions. [2022-11-16 12:06:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:06:48,152 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 6 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) Word has length 300 [2022-11-16 12:06:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:48,156 INFO L225 Difference]: With dead ends: 886 [2022-11-16 12:06:48,156 INFO L226 Difference]: Without dead ends: 480 [2022-11-16 12:06:48,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:06:48,160 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 107 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 3425 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:48,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 3425 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 12:06:48,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-11-16 12:06:48,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 438. [2022-11-16 12:06:48,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 285 states have (on average 1.1789473684210525) internal successors, (336), 286 states have internal predecessors, (336), 118 states have call successors, (118), 28 states have call predecessors, (118), 34 states have return successors, (168), 123 states have call predecessors, (168), 117 states have call successors, (168) [2022-11-16 12:06:48,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 622 transitions. [2022-11-16 12:06:48,194 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 622 transitions. Word has length 300 [2022-11-16 12:06:48,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:48,195 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 622 transitions. [2022-11-16 12:06:48,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 6 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2022-11-16 12:06:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 622 transitions. [2022-11-16 12:06:48,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-16 12:06:48,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:48,198 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:48,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:48,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:06:48,412 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:48,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:48,412 INFO L85 PathProgramCache]: Analyzing trace with hash -392725894, now seen corresponding path program 1 times [2022-11-16 12:06:48,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:48,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555059010] [2022-11-16 12:06:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:48,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:48,507 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:48,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136852510] [2022-11-16 12:06:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:48,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:48,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:48,510 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:48,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 12:06:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:49,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 3416 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-16 12:06:49,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:49,622 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2857 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2857) |c_#memory_int|)) is different from true [2022-11-16 12:06:49,677 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2858 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2858) |c_#memory_int|)) is different from true [2022-11-16 12:06:49,713 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2858 (Array Int Int)) (v_ArrVal_2857 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_22| Int)) (= (store (store |c_old(#memory_int)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_22| v_ArrVal_2857) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2858) |c_#memory_int|)) is different from true [2022-11-16 12:06:49,770 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:06:49,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-16 12:06:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 11 not checked. [2022-11-16 12:06:49,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-11-16 12:06:51,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:51,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555059010] [2022-11-16 12:06:51,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:51,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136852510] [2022-11-16 12:06:51,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136852510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:06:51,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:06:51,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2022-11-16 12:06:51,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005342194] [2022-11-16 12:06:51,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:51,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:06:51,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:51,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:06:51,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=536, Unknown=3, NotChecked=144, Total=756 [2022-11-16 12:06:51,135 INFO L87 Difference]: Start difference. First operand 438 states and 622 transitions. Second operand has 28 states, 25 states have (on average 6.96) internal successors, (174), 23 states have internal predecessors, (174), 13 states have call successors, (62), 7 states have call predecessors, (62), 8 states have return successors, (57), 11 states have call predecessors, (57), 10 states have call successors, (57) [2022-11-16 12:06:51,939 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2858 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2858) |c_#memory_int|)) (exists ((v_ArrVal_2857 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2857) |c_#memory_int|))) is different from true [2022-11-16 12:06:52,286 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2858 (Array Int Int)) (v_ArrVal_2857 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_22| Int)) (= (store (store |c_old(#memory_int)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_22| v_ArrVal_2857) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2858) |c_#memory_int|)) (not |c_aws_priority_queue_is_valid_aws_priority_queue_backpointers_valid_#t~short863#1|)) is different from true [2022-11-16 12:06:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:55,382 INFO L93 Difference]: Finished difference Result 920 states and 1399 transitions. [2022-11-16 12:06:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:06:55,383 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 6.96) internal successors, (174), 23 states have internal predecessors, (174), 13 states have call successors, (62), 7 states have call predecessors, (62), 8 states have return successors, (57), 11 states have call predecessors, (57), 10 states have call successors, (57) Word has length 300 [2022-11-16 12:06:55,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:55,389 INFO L225 Difference]: With dead ends: 920 [2022-11-16 12:06:55,389 INFO L226 Difference]: Without dead ends: 599 [2022-11-16 12:06:55,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=1191, Unknown=5, NotChecked=370, Total=1722 [2022-11-16 12:06:55,393 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 235 mSDsluCounter, 4500 mSDsCounter, 0 mSdLazyCounter, 4362 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 4892 SdHoareTripleChecker+Invalid, 7858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 4362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3314 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:55,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 4892 Invalid, 7858 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [182 Valid, 4362 Invalid, 0 Unknown, 3314 Unchecked, 3.7s Time] [2022-11-16 12:06:55,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-11-16 12:06:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 438. [2022-11-16 12:06:55,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 285 states have (on average 1.1754385964912282) internal successors, (335), 286 states have internal predecessors, (335), 118 states have call successors, (118), 28 states have call predecessors, (118), 34 states have return successors, (168), 123 states have call predecessors, (168), 117 states have call successors, (168) [2022-11-16 12:06:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 621 transitions. [2022-11-16 12:06:55,435 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 621 transitions. Word has length 300 [2022-11-16 12:06:55,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:55,436 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 621 transitions. [2022-11-16 12:06:55,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 6.96) internal successors, (174), 23 states have internal predecessors, (174), 13 states have call successors, (62), 7 states have call predecessors, (62), 8 states have return successors, (57), 11 states have call predecessors, (57), 10 states have call successors, (57) [2022-11-16 12:06:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 621 transitions. [2022-11-16 12:06:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-16 12:06:55,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:55,439 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:55,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:55,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:55,653 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:55,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash 868191356, now seen corresponding path program 1 times [2022-11-16 12:06:55,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:55,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226340387] [2022-11-16 12:06:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:55,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:55,753 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:55,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430762842] [2022-11-16 12:06:55,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:55,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:55,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:55,755 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:55,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 12:06:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:56,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 3421 conjuncts, 176 conjunts are in the unsatisfiable core [2022-11-16 12:06:56,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:57,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2022-11-16 12:06:57,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2022-11-16 12:06:58,003 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3105 Int) (v_ArrVal_3104 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3104) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3105)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:06:58,028 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3105 Int) (v_ArrVal_3104 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3104) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3105)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:06:58,111 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:06:58,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 12:06:58,129 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:06:58,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-16 12:06:58,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:06:59,242 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3108 Int) (v_ArrVal_3106 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3108))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3106)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:07:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 329 proven. 64 refuted. 0 times theorem prover too weak. 119 trivial. 17 not checked. [2022-11-16 12:07:01,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:01,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:01,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226340387] [2022-11-16 12:07:01,778 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:01,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430762842] [2022-11-16 12:07:01,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430762842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:01,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:07:01,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2022-11-16 12:07:01,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822491108] [2022-11-16 12:07:01,779 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:01,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-16 12:07:01,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:01,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-16 12:07:01,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1726, Unknown=46, NotChecked=258, Total=2162 [2022-11-16 12:07:01,781 INFO L87 Difference]: Start difference. First operand 438 states and 621 transitions. Second operand has 43 states, 36 states have (on average 4.638888888888889) internal successors, (167), 39 states have internal predecessors, (167), 18 states have call successors, (41), 7 states have call predecessors, (41), 13 states have return successors, (38), 14 states have call predecessors, (38), 18 states have call successors, (38) [2022-11-16 12:07:02,937 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3105 Int) (v_ArrVal_3104 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3104) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3105)) |c_#memory_$Pointer$.base|))) (exists ((v_ArrVal_3108 Int) (v_ArrVal_3106 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3108))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3106)) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-16 12:07:06,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:06,700 INFO L93 Difference]: Finished difference Result 965 states and 1421 transitions. [2022-11-16 12:07:06,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 12:07:06,701 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 36 states have (on average 4.638888888888889) internal successors, (167), 39 states have internal predecessors, (167), 18 states have call successors, (41), 7 states have call predecessors, (41), 13 states have return successors, (38), 14 states have call predecessors, (38), 18 states have call successors, (38) Word has length 300 [2022-11-16 12:07:06,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:06,706 INFO L225 Difference]: With dead ends: 965 [2022-11-16 12:07:06,706 INFO L226 Difference]: Without dead ends: 647 [2022-11-16 12:07:06,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 273 SyntacticMatches, 16 SemanticMatches, 65 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=247, Invalid=3628, Unknown=47, NotChecked=500, Total=4422 [2022-11-16 12:07:06,709 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 338 mSDsluCounter, 5264 mSDsCounter, 0 mSdLazyCounter, 4851 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 5627 SdHoareTripleChecker+Invalid, 8904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 4851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3852 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:06,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 5627 Invalid, 8904 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [201 Valid, 4851 Invalid, 0 Unknown, 3852 Unchecked, 4.0s Time] [2022-11-16 12:07:06,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-11-16 12:07:06,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 508. [2022-11-16 12:07:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 338 states have (on average 1.1745562130177514) internal successors, (397), 341 states have internal predecessors, (397), 128 states have call successors, (128), 33 states have call predecessors, (128), 41 states have return successors, (210), 133 states have call predecessors, (210), 127 states have call successors, (210) [2022-11-16 12:07:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 735 transitions. [2022-11-16 12:07:06,753 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 735 transitions. Word has length 300 [2022-11-16 12:07:06,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:06,754 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 735 transitions. [2022-11-16 12:07:06,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 36 states have (on average 4.638888888888889) internal successors, (167), 39 states have internal predecessors, (167), 18 states have call successors, (41), 7 states have call predecessors, (41), 13 states have return successors, (38), 14 states have call predecessors, (38), 18 states have call successors, (38) [2022-11-16 12:07:06,755 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 735 transitions. [2022-11-16 12:07:06,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-16 12:07:06,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:06,758 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:06,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:06,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:06,979 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:06,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:06,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1008871874, now seen corresponding path program 1 times [2022-11-16 12:07:06,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:06,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704774569] [2022-11-16 12:07:06,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:06,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:07,072 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:07:07,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1120632869] [2022-11-16 12:07:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:07,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:07,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:07,074 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:07,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:07:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:08,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 3416 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:07:08,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-16 12:07:08,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:08,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:08,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704774569] [2022-11-16 12:07:08,122 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:08,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120632869] [2022-11-16 12:07:08,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120632869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:08,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:08,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:07:08,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282506372] [2022-11-16 12:07:08,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:08,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:07:08,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:08,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:07:08,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:07:08,125 INFO L87 Difference]: Start difference. First operand 508 states and 735 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-16 12:07:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:08,481 INFO L93 Difference]: Finished difference Result 945 states and 1405 transitions. [2022-11-16 12:07:08,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:07:08,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 300 [2022-11-16 12:07:08,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:08,486 INFO L225 Difference]: With dead ends: 945 [2022-11-16 12:07:08,486 INFO L226 Difference]: Without dead ends: 504 [2022-11-16 12:07:08,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:08,490 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 10 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:08,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1667 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:07:08,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-11-16 12:07:08,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2022-11-16 12:07:08,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 335 states have (on average 1.173134328358209) internal successors, (393), 337 states have internal predecessors, (393), 128 states have call successors, (128), 33 states have call predecessors, (128), 40 states have return successors, (195), 133 states have call predecessors, (195), 127 states have call successors, (195) [2022-11-16 12:07:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 716 transitions. [2022-11-16 12:07:08,532 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 716 transitions. Word has length 300 [2022-11-16 12:07:08,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:08,533 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 716 transitions. [2022-11-16 12:07:08,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-16 12:07:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 716 transitions. [2022-11-16 12:07:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-16 12:07:08,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:08,536 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:08,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:08,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:08,749 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:08,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:08,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1686939682, now seen corresponding path program 2 times [2022-11-16 12:07:08,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:08,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833901606] [2022-11-16 12:07:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:08,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:08,839 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:07:08,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334464301] [2022-11-16 12:07:08,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:07:08,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:08,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:08,841 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:08,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 12:07:10,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:07:10,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:07:10,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-16 12:07:10,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:11,137 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3540 Int) (v_ArrVal_3541 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3541))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3540)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:07:11,160 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3540 Int) (v_ArrVal_3541 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3540)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3541))))) is different from true [2022-11-16 12:07:11,239 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:07:11,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 42 [2022-11-16 12:07:11,274 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:07:11,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 36 [2022-11-16 12:07:12,106 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3546 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3545 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3546)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3545))))) is different from true [2022-11-16 12:07:24,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-16 12:07:24,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-16 12:07:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 314 proven. 5 refuted. 0 times theorem prover too weak. 195 trivial. 19 not checked. [2022-11-16 12:07:24,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:27,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:27,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833901606] [2022-11-16 12:07:27,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:27,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334464301] [2022-11-16 12:07:27,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334464301] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:27,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:07:27,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-11-16 12:07:27,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468280491] [2022-11-16 12:07:27,127 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:27,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:07:27,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:27,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:07:27,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=600, Unknown=38, NotChecked=156, Total=870 [2022-11-16 12:07:27,129 INFO L87 Difference]: Start difference. First operand 504 states and 716 transitions. Second operand has 29 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 12 states have call successors, (39), 6 states have call predecessors, (39), 9 states have return successors, (36), 11 states have call predecessors, (36), 12 states have call successors, (36) [2022-11-16 12:07:27,943 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3546 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3545 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3546)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3545))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3540 Int) (v_ArrVal_3541 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3541))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3540)) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-16 12:08:01,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:01,858 INFO L93 Difference]: Finished difference Result 1146 states and 1726 transitions. [2022-11-16 12:08:01,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:08:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 12 states have call successors, (39), 6 states have call predecessors, (39), 9 states have return successors, (36), 11 states have call predecessors, (36), 12 states have call successors, (36) Word has length 302 [2022-11-16 12:08:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:01,868 INFO L225 Difference]: With dead ends: 1146 [2022-11-16 12:08:01,868 INFO L226 Difference]: Without dead ends: 793 [2022-11-16 12:08:01,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 304 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=201, Invalid=1574, Unknown=47, NotChecked=340, Total=2162 [2022-11-16 12:08:01,871 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 368 mSDsluCounter, 5648 mSDsCounter, 0 mSdLazyCounter, 6309 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 6105 SdHoareTripleChecker+Invalid, 10737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 6309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4219 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:01,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 6105 Invalid, 10737 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [209 Valid, 6309 Invalid, 0 Unknown, 4219 Unchecked, 5.7s Time] [2022-11-16 12:08:01,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-11-16 12:08:01,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 572. [2022-11-16 12:08:01,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 387 states have (on average 1.1679586563307494) internal successors, (452), 390 states have internal predecessors, (452), 138 states have call successors, (138), 36 states have call predecessors, (138), 46 states have return successors, (243), 145 states have call predecessors, (243), 137 states have call successors, (243) [2022-11-16 12:08:01,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 833 transitions. [2022-11-16 12:08:01,930 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 833 transitions. Word has length 302 [2022-11-16 12:08:01,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:01,931 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 833 transitions. [2022-11-16 12:08:01,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 12 states have call successors, (39), 6 states have call predecessors, (39), 9 states have return successors, (36), 11 states have call predecessors, (36), 12 states have call successors, (36) [2022-11-16 12:08:01,931 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 833 transitions. [2022-11-16 12:08:01,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-16 12:08:01,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:01,935 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:01,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:02,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 12:08:02,151 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:02,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1352401804, now seen corresponding path program 1 times [2022-11-16 12:08:02,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:02,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048456663] [2022-11-16 12:08:02,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:02,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:02,235 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:02,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277127253] [2022-11-16 12:08:02,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:02,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:02,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:02,237 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:02,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 12:08:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:03,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 3442 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 12:08:03,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 183 proven. 1 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-11-16 12:08:03,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:08:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 70 proven. 13 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-16 12:08:04,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:04,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048456663] [2022-11-16 12:08:04,170 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:08:04,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277127253] [2022-11-16 12:08:04,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277127253] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:08:04,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:08:04,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 21 [2022-11-16 12:08:04,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614416213] [2022-11-16 12:08:04,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:08:04,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:08:04,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:04,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:08:04,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:08:04,173 INFO L87 Difference]: Start difference. First operand 572 states and 833 transitions. Second operand has 21 states, 18 states have (on average 7.222222222222222) internal successors, (130), 14 states have internal predecessors, (130), 5 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (38), 8 states have call predecessors, (38), 4 states have call successors, (38) [2022-11-16 12:08:04,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:04,785 INFO L93 Difference]: Finished difference Result 993 states and 1497 transitions. [2022-11-16 12:08:04,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:08:04,786 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 7.222222222222222) internal successors, (130), 14 states have internal predecessors, (130), 5 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (38), 8 states have call predecessors, (38), 4 states have call successors, (38) Word has length 326 [2022-11-16 12:08:04,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:04,790 INFO L225 Difference]: With dead ends: 993 [2022-11-16 12:08:04,790 INFO L226 Difference]: Without dead ends: 587 [2022-11-16 12:08:04,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 627 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:08:04,794 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 14 mSDsluCounter, 5933 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 6366 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:04,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 6366 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:08:04,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-11-16 12:08:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 582. [2022-11-16 12:08:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 395 states have (on average 1.1670886075949367) internal successors, (461), 400 states have internal predecessors, (461), 138 states have call successors, (138), 36 states have call predecessors, (138), 48 states have return successors, (266), 145 states have call predecessors, (266), 137 states have call successors, (266) [2022-11-16 12:08:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 865 transitions. [2022-11-16 12:08:04,892 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 865 transitions. Word has length 326 [2022-11-16 12:08:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:04,892 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 865 transitions. [2022-11-16 12:08:04,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 7.222222222222222) internal successors, (130), 14 states have internal predecessors, (130), 5 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (38), 8 states have call predecessors, (38), 4 states have call successors, (38) [2022-11-16 12:08:04,893 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 865 transitions. [2022-11-16 12:08:04,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-16 12:08:04,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:04,898 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:04,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-11-16 12:08:05,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:05,115 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:05,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:05,116 INFO L85 PathProgramCache]: Analyzing trace with hash -543221226, now seen corresponding path program 3 times [2022-11-16 12:08:05,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:05,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344998017] [2022-11-16 12:08:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:05,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:05,198 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:05,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884854555] [2022-11-16 12:08:05,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:08:05,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:05,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:05,200 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:05,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be4683f-7372-4247-8e9e-600287cf54bf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 12:08:06,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:08:06,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:08:06,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 2191 conjuncts, 176 conjunts are in the unsatisfiable core [2022-11-16 12:08:06,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:06,643 INFO L321 Elim1Store]: treesize reduction 44, result has 47.0 percent of original size [2022-11-16 12:08:06,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 48 [2022-11-16 12:08:38,179 WARN L233 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 88 DAG size of output: 84 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:09:23,084 WARN L233 SmtUtils]: Spent 22.24s on a formula simplification that was a NOOP. DAG size: 103 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:09:40,195 WARN L233 SmtUtils]: Spent 15.14s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:10:08,663 WARN L233 SmtUtils]: Spent 22.61s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:11:29,668 WARN L233 SmtUtils]: Spent 1.18m on a formula simplification that was a NOOP. DAG size: 151 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)