./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN --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 b8e2b19500a9ff32f182f41fca1db48d6268985503aaacd0cb9efdaafa7d6419 --- 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-6b4ec56 [2022-11-20 11:46:54,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:46:54,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:46:54,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:46:54,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:46:54,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:46:54,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:46:54,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:46:54,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:46:54,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:46:54,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:46:54,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:46:54,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:46:54,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:46:54,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:46:54,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:46:54,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:46:54,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:46:54,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:46:54,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:46:54,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:46:54,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:46:54,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:46:54,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:46:54,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:46:54,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:46:54,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:46:54,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:46:54,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:46:54,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:46:54,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:46:54,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:46:54,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:46:54,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:46:54,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:46:54,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:46:54,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:46:54,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:46:54,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:46:54,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:46:54,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:46:54,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:46:54,885 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:46:54,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:46:54,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:46:54,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:46:54,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:46:54,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:46:54,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:46:54,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:46:54,889 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:46:54,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:46:54,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:46:54,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:46:54,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:46:54,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:46:54,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:46:54,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:46:54,891 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:46:54,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:46:54,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:46:54,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:46:54,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:46:54,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:46:54,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:46:54,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:46:54,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:46:54,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:46:54,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:46:54,894 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:46:54,894 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:46:54,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:46:54,895 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_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8e2b19500a9ff32f182f41fca1db48d6268985503aaacd0cb9efdaafa7d6419 [2022-11-20 11:46:55,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:46:55,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:46:55,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:46:55,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:46:55,202 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:46:55,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i [2022-11-20 11:46:58,289 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:46:58,894 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:46:58,895 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i [2022-11-20 11:46:58,933 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/data/6082fb101/5134764cd32b45519dd6dc700e8221c8/FLAG3c736caf5 [2022-11-20 11:46:58,957 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/data/6082fb101/5134764cd32b45519dd6dc700e8221c8 [2022-11-20 11:46:58,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:46:58,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:46:58,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:46:58,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:46:58,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:46:58,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:58" (1/1) ... [2022-11-20 11:46:58,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a47e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58, skipping insertion in model container [2022-11-20 11:46:58,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:58" (1/1) ... [2022-11-20 11:46:58,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:46:59,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:46:59,349 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i[4501,4514] [2022-11-20 11:46:59,357 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i[4561,4574] [2022-11-20 11:47:00,222 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 11:47:00,305 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:00,306 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:00,306 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:00,307 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:00,309 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:00,324 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:00,325 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:00,327 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:00,328 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:00,815 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 11:47:00,816 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 11:47:00,817 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 11:47:00,819 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 11:47:00,820 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 11:47:00,821 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 11:47:00,822 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 11:47:00,822 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 11:47:00,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 11:47:00,830 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 11:47:01,039 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:01,039 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:01,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:47:01,177 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:47:01,207 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i[4501,4514] [2022-11-20 11:47:01,208 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i[4561,4574] [2022-11-20 11:47:01,301 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 11:47:01,315 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:01,316 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:01,316 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:01,317 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:01,317 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:01,325 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:01,325 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:01,326 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:01,327 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:01,359 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 11:47:01,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 11:47:01,361 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 11:47:01,362 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 11:47:01,363 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 11:47:01,363 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 11:47:01,364 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 11:47:01,364 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 11:47:01,365 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 11:47:01,366 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 11:47:01,396 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:01,397 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:47:01,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:47:01,602 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:47:01,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01 WrapperNode [2022-11-20 11:47:01,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:47:01,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:47:01,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:47:01,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:47:01,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01" (1/1) ... [2022-11-20 11:47:01,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01" (1/1) ... [2022-11-20 11:47:01,766 INFO L138 Inliner]: procedures = 689, calls = 1535, calls flagged for inlining = 55, calls inlined = 11, statements flattened = 691 [2022-11-20 11:47:01,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:47:01,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:47:01,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:47:01,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:47:01,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01" (1/1) ... [2022-11-20 11:47:01,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01" (1/1) ... [2022-11-20 11:47:01,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01" (1/1) ... [2022-11-20 11:47:01,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01" (1/1) ... [2022-11-20 11:47:01,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01" (1/1) ... [2022-11-20 11:47:01,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01" (1/1) ... [2022-11-20 11:47:01,822 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01" (1/1) ... [2022-11-20 11:47:01,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01" (1/1) ... [2022-11-20 11:47:01,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:47:01,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:47:01,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:47:01,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:47:01,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01" (1/1) ... [2022-11-20 11:47:01,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:47:01,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:01,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:47:01,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:47:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-20 11:47:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-20 11:47:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:47:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-20 11:47:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-20 11:47:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-20 11:47:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-20 11:47:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 11:47:01,938 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 11:47:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:47:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 11:47:01,939 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 11:47:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 11:47:01,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 11:47:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:47:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:47:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-20 11:47:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-20 11:47:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:47:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:47:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:47:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 11:47:01,942 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 11:47:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-20 11:47:01,942 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-20 11:47:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-20 11:47:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-20 11:47:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-20 11:47:01,944 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-20 11:47:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:47:01,944 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:47:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:47:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:47:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:47:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 11:47:01,944 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 11:47:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-20 11:47:01,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-20 11:47:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:47:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2022-11-20 11:47:01,945 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2022-11-20 11:47:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-20 11:47:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-20 11:47:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:47:02,270 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:47:02,272 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:47:03,489 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:47:03,502 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:47:03,503 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:47:03,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:47:03 BoogieIcfgContainer [2022-11-20 11:47:03,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:47:03,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:47:03,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:47:03,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:47:03,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:46:58" (1/3) ... [2022-11-20 11:47:03,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1168c243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:47:03, skipping insertion in model container [2022-11-20 11:47:03,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:01" (2/3) ... [2022-11-20 11:47:03,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1168c243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:47:03, skipping insertion in model container [2022-11-20 11:47:03,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:47:03" (3/3) ... [2022-11-20 11:47:03,519 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_capacity_harness.i [2022-11-20 11:47:03,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:47:03,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:47:03,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:47:03,630 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;@7227e0d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:47:03,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:47:03,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 113 states have internal predecessors, (137), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-20 11:47:03,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-20 11:47:03,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:03,653 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2022-11-20 11:47:03,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:03,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:03,663 INFO L85 PathProgramCache]: Analyzing trace with hash -626335346, now seen corresponding path program 1 times [2022-11-20 11:47:03,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:03,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913307628] [2022-11-20 11:47:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:03,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:04,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:04,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913307628] [2022-11-20 11:47:04,326 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:47:04,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605088071] [2022-11-20 11:47:04,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:04,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:04,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:04,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:04,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:47:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:04,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 2284 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:47:05,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 11:47:05,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:05,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605088071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:05,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:05,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:47:05,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320935676] [2022-11-20 11:47:05,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:05,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:47:05,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:05,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:47:05,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:47:05,118 INFO L87 Difference]: Start difference. First operand has 170 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 113 states have internal predecessors, (137), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 11:47:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:05,169 INFO L93 Difference]: Finished difference Result 329 states and 449 transitions. [2022-11-20 11:47:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:47:05,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 110 [2022-11-20 11:47:05,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:05,182 INFO L225 Difference]: With dead ends: 329 [2022-11-20 11:47:05,182 INFO L226 Difference]: Without dead ends: 165 [2022-11-20 11:47:05,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:47:05,191 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:05,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:47:05,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-20 11:47:05,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-11-20 11:47:05,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 108 states have (on average 1.2037037037037037) internal successors, (130), 109 states have internal predecessors, (130), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-20 11:47:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 209 transitions. [2022-11-20 11:47:05,248 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 209 transitions. Word has length 110 [2022-11-20 11:47:05,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:05,249 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 209 transitions. [2022-11-20 11:47:05,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 11:47:05,250 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 209 transitions. [2022-11-20 11:47:05,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-20 11:47:05,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:05,254 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2022-11-20 11:47:05,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:05,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 11:47:05,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:05,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash 726994572, now seen corresponding path program 1 times [2022-11-20 11:47:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:05,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172283957] [2022-11-20 11:47:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:05,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:05,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:05,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172283957] [2022-11-20 11:47:05,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:47:05,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199476961] [2022-11-20 11:47:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:05,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:05,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:05,764 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:05,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:47:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:06,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 2284 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:47:06,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-20 11:47:06,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:06,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199476961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:06,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:06,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:47:06,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395602734] [2022-11-20 11:47:06,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:06,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:47:06,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:47:06,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:47:06,536 INFO L87 Difference]: Start difference. First operand 165 states and 209 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 11:47:06,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:06,788 INFO L93 Difference]: Finished difference Result 288 states and 367 transitions. [2022-11-20 11:47:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:47:06,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 110 [2022-11-20 11:47:06,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:06,792 INFO L225 Difference]: With dead ends: 288 [2022-11-20 11:47:06,792 INFO L226 Difference]: Without dead ends: 165 [2022-11-20 11:47:06,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:47:06,795 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 220 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:06,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 647 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:47:06,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-20 11:47:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-11-20 11:47:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 108 states have (on average 1.1944444444444444) internal successors, (129), 109 states have internal predecessors, (129), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-20 11:47:06,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 208 transitions. [2022-11-20 11:47:06,815 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 208 transitions. Word has length 110 [2022-11-20 11:47:06,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:06,816 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 208 transitions. [2022-11-20 11:47:06,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 11:47:06,816 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 208 transitions. [2022-11-20 11:47:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 11:47:06,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:06,819 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 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] [2022-11-20 11:47:06,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:07,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:07,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:07,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:07,030 INFO L85 PathProgramCache]: Analyzing trace with hash 691144694, now seen corresponding path program 1 times [2022-11-20 11:47:07,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:07,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94378960] [2022-11-20 11:47:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:07,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:07,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:07,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94378960] [2022-11-20 11:47:07,232 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:47:07,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087767296] [2022-11-20 11:47:07,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:07,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:07,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:07,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:07,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:47:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:07,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 2334 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:47:07,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-20 11:47:07,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:07,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087767296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:07,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:07,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:47:07,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26396983] [2022-11-20 11:47:07,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:07,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:47:07,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:07,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:47:07,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:47:07,842 INFO L87 Difference]: Start difference. First operand 165 states and 208 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-20 11:47:08,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:08,031 INFO L93 Difference]: Finished difference Result 307 states and 396 transitions. [2022-11-20 11:47:08,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:47:08,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 118 [2022-11-20 11:47:08,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:08,036 INFO L225 Difference]: With dead ends: 307 [2022-11-20 11:47:08,036 INFO L226 Difference]: Without dead ends: 167 [2022-11-20 11:47:08,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:47:08,038 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 71 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:08,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1103 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:47:08,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-20 11:47:08,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-11-20 11:47:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 109 states have (on average 1.1926605504587156) internal successors, (130), 111 states have internal predecessors, (130), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-11-20 11:47:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 212 transitions. [2022-11-20 11:47:08,068 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 212 transitions. Word has length 118 [2022-11-20 11:47:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:08,070 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 212 transitions. [2022-11-20 11:47:08,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-20 11:47:08,071 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 212 transitions. [2022-11-20 11:47:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 11:47:08,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:08,075 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2022-11-20 11:47:08,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:08,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:08,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:08,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:08,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1403025034, now seen corresponding path program 1 times [2022-11-20 11:47:08,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:08,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656917757] [2022-11-20 11:47:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:08,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:08,382 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:08,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661218803] [2022-11-20 11:47:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:08,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:08,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:08,385 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:08,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:47:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:09,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:47:09,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-20 11:47:09,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:09,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:09,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656917757] [2022-11-20 11:47:09,036 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:09,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661218803] [2022-11-20 11:47:09,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661218803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:09,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:09,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:47:09,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050317251] [2022-11-20 11:47:09,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:09,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:47:09,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:09,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:47:09,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:47:09,039 INFO L87 Difference]: Start difference. First operand 167 states and 212 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 11:47:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:09,087 INFO L93 Difference]: Finished difference Result 295 states and 383 transitions. [2022-11-20 11:47:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:47:09,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 133 [2022-11-20 11:47:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:09,091 INFO L225 Difference]: With dead ends: 295 [2022-11-20 11:47:09,092 INFO L226 Difference]: Without dead ends: 172 [2022-11-20 11:47:09,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:47:09,096 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 10 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 611 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 [2022-11-20 11:47:09,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 611 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:47:09,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-20 11:47:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 169. [2022-11-20 11:47:09,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 111 states have (on average 1.1891891891891893) internal successors, (132), 113 states have internal predecessors, (132), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-11-20 11:47:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 214 transitions. [2022-11-20 11:47:09,130 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 214 transitions. Word has length 133 [2022-11-20 11:47:09,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:09,131 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 214 transitions. [2022-11-20 11:47:09,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 11:47:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 214 transitions. [2022-11-20 11:47:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 11:47:09,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:09,135 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2022-11-20 11:47:09,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:09,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-20 11:47:09,336 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:09,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:09,337 INFO L85 PathProgramCache]: Analyzing trace with hash -558549624, now seen corresponding path program 1 times [2022-11-20 11:47:09,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:09,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911783028] [2022-11-20 11:47:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:09,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:09,433 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:09,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829786994] [2022-11-20 11:47:09,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:09,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:09,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:09,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:09,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:47:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:10,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:47:10,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-20 11:47:10,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:10,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:10,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911783028] [2022-11-20 11:47:10,174 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:10,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829786994] [2022-11-20 11:47:10,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829786994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:10,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:10,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:47:10,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988487932] [2022-11-20 11:47:10,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:10,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:47:10,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:10,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:47:10,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:47:10,178 INFO L87 Difference]: Start difference. First operand 169 states and 214 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-20 11:47:10,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:10,510 INFO L93 Difference]: Finished difference Result 297 states and 378 transitions. [2022-11-20 11:47:10,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:47:10,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 133 [2022-11-20 11:47:10,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:10,513 INFO L225 Difference]: With dead ends: 297 [2022-11-20 11:47:10,513 INFO L226 Difference]: Without dead ends: 169 [2022-11-20 11:47:10,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:47:10,515 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 242 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:10,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 765 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:47:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-20 11:47:10,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-20 11:47:10,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 113 states have internal predecessors, (131), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-11-20 11:47:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 213 transitions. [2022-11-20 11:47:10,532 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 213 transitions. Word has length 133 [2022-11-20 11:47:10,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:10,532 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 213 transitions. [2022-11-20 11:47:10,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-20 11:47:10,533 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 213 transitions. [2022-11-20 11:47:10,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-20 11:47:10,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:10,536 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 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] [2022-11-20 11:47:10,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:10,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:10,745 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:10,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:10,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1813374097, now seen corresponding path program 1 times [2022-11-20 11:47:10,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:10,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123778044] [2022-11-20 11:47:10,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:10,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:10,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:10,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508188812] [2022-11-20 11:47:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:10,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:10,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:10,846 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:10,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:47:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:11,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 2547 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:47:11,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 11:47:11,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:11,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:11,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123778044] [2022-11-20 11:47:11,566 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:11,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508188812] [2022-11-20 11:47:11,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508188812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:11,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:11,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:47:11,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190790910] [2022-11-20 11:47:11,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:11,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:47:11,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:11,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:47:11,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:47:11,569 INFO L87 Difference]: Start difference. First operand 169 states and 213 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-11-20 11:47:11,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:11,844 INFO L93 Difference]: Finished difference Result 310 states and 395 transitions. [2022-11-20 11:47:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:47:11,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 149 [2022-11-20 11:47:11,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:11,846 INFO L225 Difference]: With dead ends: 310 [2022-11-20 11:47:11,846 INFO L226 Difference]: Without dead ends: 169 [2022-11-20 11:47:11,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:47:11,848 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 109 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:11,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1147 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:47:11,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-20 11:47:11,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-20 11:47:11,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 113 states have internal predecessors, (131), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2022-11-20 11:47:11,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 212 transitions. [2022-11-20 11:47:11,859 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 212 transitions. Word has length 149 [2022-11-20 11:47:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:11,859 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 212 transitions. [2022-11-20 11:47:11,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-11-20 11:47:11,859 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 212 transitions. [2022-11-20 11:47:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-20 11:47:11,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:11,862 INFO L195 NwaCegarLoop]: trace histogram [7, 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, 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] [2022-11-20 11:47:11,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:12,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:12,072 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:12,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:12,073 INFO L85 PathProgramCache]: Analyzing trace with hash 770964543, now seen corresponding path program 2 times [2022-11-20 11:47:12,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:12,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075445412] [2022-11-20 11:47:12,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:12,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:12,165 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:12,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092481457] [2022-11-20 11:47:12,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:47:12,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:12,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:12,167 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:12,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:47:13,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:47:13,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:13,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:47:13,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-20 11:47:13,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:13,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:13,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075445412] [2022-11-20 11:47:13,321 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:13,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092481457] [2022-11-20 11:47:13,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092481457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:13,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:13,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:47:13,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537201845] [2022-11-20 11:47:13,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:13,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:47:13,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:13,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:47:13,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:47:13,324 INFO L87 Difference]: Start difference. First operand 169 states and 212 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 11:47:13,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:13,479 INFO L93 Difference]: Finished difference Result 276 states and 344 transitions. [2022-11-20 11:47:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:47:13,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 164 [2022-11-20 11:47:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:13,481 INFO L225 Difference]: With dead ends: 276 [2022-11-20 11:47:13,481 INFO L226 Difference]: Without dead ends: 167 [2022-11-20 11:47:13,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:47:13,483 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 27 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:13,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 867 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:47:13,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-20 11:47:13,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-11-20 11:47:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 110 states have (on average 1.1727272727272726) internal successors, (129), 111 states have internal predecessors, (129), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-20 11:47:13,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 208 transitions. [2022-11-20 11:47:13,493 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 208 transitions. Word has length 164 [2022-11-20 11:47:13,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:13,494 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 208 transitions. [2022-11-20 11:47:13,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 11:47:13,495 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 208 transitions. [2022-11-20 11:47:13,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-20 11:47:13,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:13,497 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:13,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:13,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:13,710 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:13,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:13,711 INFO L85 PathProgramCache]: Analyzing trace with hash -534191969, now seen corresponding path program 1 times [2022-11-20 11:47:13,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:13,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710860020] [2022-11-20 11:47:13,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:13,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:13,813 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:13,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741923864] [2022-11-20 11:47:13,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:13,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:13,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:13,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:13,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:47:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:14,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:47:14,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-20 11:47:14,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:14,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:14,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710860020] [2022-11-20 11:47:14,772 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:14,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741923864] [2022-11-20 11:47:14,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741923864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:14,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:14,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:47:14,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934849768] [2022-11-20 11:47:14,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:14,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:47:14,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:14,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:47:14,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:47:14,775 INFO L87 Difference]: Start difference. First operand 167 states and 208 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 11:47:15,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:15,102 INFO L93 Difference]: Finished difference Result 308 states and 389 transitions. [2022-11-20 11:47:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:47:15,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 194 [2022-11-20 11:47:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:15,105 INFO L225 Difference]: With dead ends: 308 [2022-11-20 11:47:15,105 INFO L226 Difference]: Without dead ends: 185 [2022-11-20 11:47:15,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:47:15,106 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 23 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:15,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 893 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:47:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-20 11:47:15,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 171. [2022-11-20 11:47:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 114 states have (on average 1.1754385964912282) internal successors, (134), 115 states have internal predecessors, (134), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-20 11:47:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 213 transitions. [2022-11-20 11:47:15,117 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 213 transitions. Word has length 194 [2022-11-20 11:47:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:15,118 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 213 transitions. [2022-11-20 11:47:15,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 11:47:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 213 transitions. [2022-11-20 11:47:15,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-20 11:47:15,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:15,121 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:15,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:15,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:15,332 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:15,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:15,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1304925535, now seen corresponding path program 1 times [2022-11-20 11:47:15,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:15,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653125110] [2022-11-20 11:47:15,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:15,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:15,439 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:15,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387276095] [2022-11-20 11:47:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:15,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:15,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:15,441 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:15,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:47:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:16,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2967 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:47:16,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-20 11:47:16,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:16,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:16,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653125110] [2022-11-20 11:47:16,190 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:16,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387276095] [2022-11-20 11:47:16,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387276095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:16,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:16,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:47:16,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79129749] [2022-11-20 11:47:16,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:16,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:47:16,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:16,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:47:16,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:47:16,193 INFO L87 Difference]: Start difference. First operand 171 states and 213 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 11:47:16,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:16,227 INFO L93 Difference]: Finished difference Result 302 states and 379 transitions. [2022-11-20 11:47:16,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:47:16,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 194 [2022-11-20 11:47:16,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:16,229 INFO L225 Difference]: With dead ends: 302 [2022-11-20 11:47:16,230 INFO L226 Difference]: Without dead ends: 175 [2022-11-20 11:47:16,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:47:16,231 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 3 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 604 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 [2022-11-20 11:47:16,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 604 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:47:16,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-20 11:47:16,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2022-11-20 11:47:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 117 states have internal predecessors, (136), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-20 11:47:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 215 transitions. [2022-11-20 11:47:16,241 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 215 transitions. Word has length 194 [2022-11-20 11:47:16,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:16,241 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 215 transitions. [2022-11-20 11:47:16,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 11:47:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 215 transitions. [2022-11-20 11:47:16,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-20 11:47:16,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:16,244 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:16,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:16,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:16,454 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:16,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:16,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1891201757, now seen corresponding path program 1 times [2022-11-20 11:47:16,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:16,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964695756] [2022-11-20 11:47:16,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:16,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:16,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:16,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [203803846] [2022-11-20 11:47:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:16,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:16,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:16,557 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:16,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:47:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:17,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-20 11:47:17,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:17,423 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1163 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1163) |c_#memory_int|)) is different from true [2022-11-20 11:47:17,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:47:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-20 11:47:17,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:17,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:17,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964695756] [2022-11-20 11:47:17,772 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:17,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203803846] [2022-11-20 11:47:17,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203803846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:17,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:17,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 11:47:17,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785209590] [2022-11-20 11:47:17,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:17,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:47:17,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:17,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:47:17,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=123, Unknown=10, NotChecked=22, Total=182 [2022-11-20 11:47:17,775 INFO L87 Difference]: Start difference. First operand 173 states and 215 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 13 states have internal predecessors, (93), 7 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-11-20 11:47:18,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:18,855 INFO L93 Difference]: Finished difference Result 341 states and 433 transitions. [2022-11-20 11:47:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:47:18,856 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 13 states have internal predecessors, (93), 7 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 194 [2022-11-20 11:47:18,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:18,858 INFO L225 Difference]: With dead ends: 341 [2022-11-20 11:47:18,858 INFO L226 Difference]: Without dead ends: 212 [2022-11-20 11:47:18,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=215, Unknown=14, NotChecked=30, Total=306 [2022-11-20 11:47:18,860 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 132 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 762 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:18,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 768 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 901 Invalid, 0 Unknown, 762 Unchecked, 0.9s Time] [2022-11-20 11:47:18,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-20 11:47:18,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 189. [2022-11-20 11:47:18,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 130 states have (on average 1.1846153846153846) internal successors, (154), 131 states have internal predecessors, (154), 40 states have call successors, (40), 16 states have call predecessors, (40), 18 states have return successors, (44), 41 states have call predecessors, (44), 39 states have call successors, (44) [2022-11-20 11:47:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 238 transitions. [2022-11-20 11:47:18,877 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 238 transitions. Word has length 194 [2022-11-20 11:47:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:18,878 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 238 transitions. [2022-11-20 11:47:18,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 13 states have internal predecessors, (93), 7 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-11-20 11:47:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 238 transitions. [2022-11-20 11:47:18,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-20 11:47:18,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:18,881 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:18,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-20 11:47:19,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:47:19,094 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:19,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:19,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1820193313, now seen corresponding path program 1 times [2022-11-20 11:47:19,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:19,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633551212] [2022-11-20 11:47:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:19,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:19,203 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:19,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488634184] [2022-11-20 11:47:19,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:19,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:19,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:19,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:19,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:47:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:19,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 2965 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:47:19,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:19,955 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-20 11:47:19,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:19,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:19,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633551212] [2022-11-20 11:47:19,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:19,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488634184] [2022-11-20 11:47:19,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488634184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:19,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:19,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:47:19,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756765237] [2022-11-20 11:47:19,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:19,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:47:19,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:19,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:47:19,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:47:19,959 INFO L87 Difference]: Start difference. First operand 189 states and 238 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 11:47:20,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:20,008 INFO L93 Difference]: Finished difference Result 348 states and 443 transitions. [2022-11-20 11:47:20,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:47:20,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 194 [2022-11-20 11:47:20,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:20,011 INFO L225 Difference]: With dead ends: 348 [2022-11-20 11:47:20,011 INFO L226 Difference]: Without dead ends: 203 [2022-11-20 11:47:20,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:47:20,012 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 9 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:20,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 809 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:47:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-20 11:47:20,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2022-11-20 11:47:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 138 states have (on average 1.1884057971014492) internal successors, (164), 139 states have internal predecessors, (164), 40 states have call successors, (40), 16 states have call predecessors, (40), 18 states have return successors, (44), 41 states have call predecessors, (44), 39 states have call successors, (44) [2022-11-20 11:47:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 248 transitions. [2022-11-20 11:47:20,029 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 248 transitions. Word has length 194 [2022-11-20 11:47:20,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:20,029 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 248 transitions. [2022-11-20 11:47:20,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 11:47:20,030 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 248 transitions. [2022-11-20 11:47:20,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-20 11:47:20,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:20,034 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-11-20 11:47:20,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:20,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:20,251 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:20,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:20,251 INFO L85 PathProgramCache]: Analyzing trace with hash 529953845, now seen corresponding path program 1 times [2022-11-20 11:47:20,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:20,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020022455] [2022-11-20 11:47:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:20,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:20,338 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:20,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391520999] [2022-11-20 11:47:20,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:20,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:20,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:20,341 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:20,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:47:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:21,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 11:47:21,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-20 11:47:21,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:21,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:21,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020022455] [2022-11-20 11:47:21,402 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:21,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391520999] [2022-11-20 11:47:21,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391520999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:21,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:21,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 11:47:21,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397365229] [2022-11-20 11:47:21,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:21,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:47:21,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:21,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:47:21,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:47:21,406 INFO L87 Difference]: Start difference. First operand 197 states and 248 transitions. Second operand has 14 states, 13 states have (on average 7.769230769230769) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (25), 2 states have call predecessors, (25), 6 states have return successors, (26), 5 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-20 11:47:21,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:21,691 INFO L93 Difference]: Finished difference Result 337 states and 426 transitions. [2022-11-20 11:47:21,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:47:21,692 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.769230769230769) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (25), 2 states have call predecessors, (25), 6 states have return successors, (26), 5 states have call predecessors, (26), 3 states have call successors, (26) Word has length 212 [2022-11-20 11:47:21,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:21,693 INFO L225 Difference]: With dead ends: 337 [2022-11-20 11:47:21,694 INFO L226 Difference]: Without dead ends: 206 [2022-11-20 11:47:21,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:47:21,695 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 22 mSDsluCounter, 2238 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:21,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2448 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:47:21,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-20 11:47:21,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2022-11-20 11:47:21,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 144 states have (on average 1.1875) internal successors, (171), 146 states have internal predecessors, (171), 40 states have call successors, (40), 16 states have call predecessors, (40), 19 states have return successors, (47), 41 states have call predecessors, (47), 39 states have call successors, (47) [2022-11-20 11:47:21,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 258 transitions. [2022-11-20 11:47:21,709 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 258 transitions. Word has length 212 [2022-11-20 11:47:21,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:21,710 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 258 transitions. [2022-11-20 11:47:21,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.769230769230769) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (25), 2 states have call predecessors, (25), 6 states have return successors, (26), 5 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-20 11:47:21,711 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 258 transitions. [2022-11-20 11:47:21,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-20 11:47:21,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:21,714 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 11:47:21,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:21,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:21,926 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:21,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash 181491113, now seen corresponding path program 2 times [2022-11-20 11:47:21,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:21,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643532564] [2022-11-20 11:47:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:21,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:22,026 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:22,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592445743] [2022-11-20 11:47:22,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:47:22,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:22,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:22,028 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:22,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:47:23,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:47:23,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:23,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-20 11:47:23,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 11:47:24,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:24,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:24,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643532564] [2022-11-20 11:47:24,120 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:24,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592445743] [2022-11-20 11:47:24,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592445743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:24,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:24,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:47:24,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678076403] [2022-11-20 11:47:24,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:24,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:47:24,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:24,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:47:24,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:47:24,125 INFO L87 Difference]: Start difference. First operand 204 states and 258 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 7 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-11-20 11:47:26,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:26,026 INFO L93 Difference]: Finished difference Result 444 states and 576 transitions. [2022-11-20 11:47:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:47:26,027 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 7 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 200 [2022-11-20 11:47:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:26,029 INFO L225 Difference]: With dead ends: 444 [2022-11-20 11:47:26,029 INFO L226 Difference]: Without dead ends: 284 [2022-11-20 11:47:26,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:47:26,031 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 271 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:26,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 835 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 11:47:26,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-20 11:47:26,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 209. [2022-11-20 11:47:26,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 148 states have (on average 1.1891891891891893) internal successors, (176), 151 states have internal predecessors, (176), 40 states have call successors, (40), 16 states have call predecessors, (40), 20 states have return successors, (50), 41 states have call predecessors, (50), 39 states have call successors, (50) [2022-11-20 11:47:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 266 transitions. [2022-11-20 11:47:26,046 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 266 transitions. Word has length 200 [2022-11-20 11:47:26,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:26,047 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 266 transitions. [2022-11-20 11:47:26,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 7 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-11-20 11:47:26,047 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 266 transitions. [2022-11-20 11:47:26,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-20 11:47:26,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:26,051 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 11:47:26,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:26,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:47:26,265 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:26,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:26,266 INFO L85 PathProgramCache]: Analyzing trace with hash 904679995, now seen corresponding path program 1 times [2022-11-20 11:47:26,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:26,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518391556] [2022-11-20 11:47:26,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:26,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:26,365 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:26,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633639584] [2022-11-20 11:47:26,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:26,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:26,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:26,367 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:26,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:47:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:27,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:47:27,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-20 11:47:27,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:27,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:27,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518391556] [2022-11-20 11:47:27,169 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:27,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633639584] [2022-11-20 11:47:27,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633639584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:27,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:27,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:47:27,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133087788] [2022-11-20 11:47:27,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:27,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:47:27,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:27,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:47:27,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:47:27,172 INFO L87 Difference]: Start difference. First operand 209 states and 266 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 11:47:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:27,419 INFO L93 Difference]: Finished difference Result 374 states and 487 transitions. [2022-11-20 11:47:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:47:27,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 196 [2022-11-20 11:47:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:27,421 INFO L225 Difference]: With dead ends: 374 [2022-11-20 11:47:27,421 INFO L226 Difference]: Without dead ends: 209 [2022-11-20 11:47:27,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:47:27,423 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 10 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:27,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 751 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:47:27,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-20 11:47:27,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-11-20 11:47:27,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 148 states have (on average 1.1756756756756757) internal successors, (174), 151 states have internal predecessors, (174), 40 states have call successors, (40), 16 states have call predecessors, (40), 20 states have return successors, (50), 41 states have call predecessors, (50), 39 states have call successors, (50) [2022-11-20 11:47:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 264 transitions. [2022-11-20 11:47:27,436 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 264 transitions. Word has length 196 [2022-11-20 11:47:27,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:27,437 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 264 transitions. [2022-11-20 11:47:27,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 11:47:27,437 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 264 transitions. [2022-11-20 11:47:27,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-20 11:47:27,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:27,440 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 11:47:27,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:27,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:47:27,652 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:27,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:27,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1935720893, now seen corresponding path program 1 times [2022-11-20 11:47:27,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:27,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228355730] [2022-11-20 11:47:27,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:27,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:27,770 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:27,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589203659] [2022-11-20 11:47:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:27,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:27,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:27,772 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:27,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:47:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:28,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 2967 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-20 11:47:28,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:30,648 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 11:47:30,649 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2022-11-20 11:47:30,661 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 11:47:30,661 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2022-11-20 11:47:30,667 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 11:47:30,668 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2022-11-20 11:47:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 149 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 11:47:30,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:33,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:33,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228355730] [2022-11-20 11:47:33,771 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:33,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589203659] [2022-11-20 11:47:33,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589203659] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:33,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:47:33,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-20 11:47:33,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879914390] [2022-11-20 11:47:33,772 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:33,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:47:33,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:33,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:47:33,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:47:33,774 INFO L87 Difference]: Start difference. First operand 209 states and 264 transitions. Second operand has 22 states, 21 states have (on average 4.619047619047619) internal successors, (97), 20 states have internal predecessors, (97), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2022-11-20 11:47:38,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:38,942 INFO L93 Difference]: Finished difference Result 449 states and 575 transitions. [2022-11-20 11:47:38,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:47:38,943 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.619047619047619) internal successors, (97), 20 states have internal predecessors, (97), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) Word has length 196 [2022-11-20 11:47:38,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:38,945 INFO L225 Difference]: With dead ends: 449 [2022-11-20 11:47:38,945 INFO L226 Difference]: Without dead ends: 298 [2022-11-20 11:47:38,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 229 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=347, Invalid=2844, Unknown=1, NotChecked=0, Total=3192 [2022-11-20 11:47:38,948 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 319 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 3331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 248 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:38,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1231 Invalid, 3331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2956 Invalid, 0 Unknown, 248 Unchecked, 3.1s Time] [2022-11-20 11:47:38,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-20 11:47:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 240. [2022-11-20 11:47:38,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 171 states have (on average 1.1695906432748537) internal successors, (200), 176 states have internal predecessors, (200), 45 states have call successors, (45), 17 states have call predecessors, (45), 23 states have return successors, (60), 46 states have call predecessors, (60), 44 states have call successors, (60) [2022-11-20 11:47:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 305 transitions. [2022-11-20 11:47:38,968 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 305 transitions. Word has length 196 [2022-11-20 11:47:38,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:38,969 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 305 transitions. [2022-11-20 11:47:38,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.619047619047619) internal successors, (97), 20 states have internal predecessors, (97), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2022-11-20 11:47:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 305 transitions. [2022-11-20 11:47:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-20 11:47:38,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:38,973 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:38,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:39,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:47:39,185 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:39,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:39,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1631490183, now seen corresponding path program 1 times [2022-11-20 11:47:39,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:39,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212921977] [2022-11-20 11:47:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:39,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:39,277 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:39,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586970166] [2022-11-20 11:47:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:39,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:39,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:39,279 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:39,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 11:47:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:40,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 2980 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:47:40,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-20 11:47:40,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:40,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:40,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212921977] [2022-11-20 11:47:40,080 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:40,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586970166] [2022-11-20 11:47:40,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586970166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:40,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:40,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:47:40,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019984188] [2022-11-20 11:47:40,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:40,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:47:40,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:40,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:47:40,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:47:40,083 INFO L87 Difference]: Start difference. First operand 240 states and 305 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 11:47:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:40,116 INFO L93 Difference]: Finished difference Result 420 states and 534 transitions. [2022-11-20 11:47:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:47:40,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 208 [2022-11-20 11:47:40,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:40,119 INFO L225 Difference]: With dead ends: 420 [2022-11-20 11:47:40,119 INFO L226 Difference]: Without dead ends: 235 [2022-11-20 11:47:40,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:47:40,120 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:40,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 606 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:47:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-20 11:47:40,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 230. [2022-11-20 11:47:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 161 states have (on average 1.15527950310559) internal successors, (186), 166 states have internal predecessors, (186), 45 states have call successors, (45), 17 states have call predecessors, (45), 23 states have return successors, (60), 46 states have call predecessors, (60), 44 states have call successors, (60) [2022-11-20 11:47:40,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 291 transitions. [2022-11-20 11:47:40,137 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 291 transitions. Word has length 208 [2022-11-20 11:47:40,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:40,137 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 291 transitions. [2022-11-20 11:47:40,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 11:47:40,138 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 291 transitions. [2022-11-20 11:47:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-20 11:47:40,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:40,140 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:40,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:40,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:47:40,351 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:40,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash -347639029, now seen corresponding path program 1 times [2022-11-20 11:47:40,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:40,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71424656] [2022-11-20 11:47:40,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:40,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:40,437 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:40,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486937679] [2022-11-20 11:47:40,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:40,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:40,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:40,439 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:40,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 11:47:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:41,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 11:47:41,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-20 11:47:41,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:41,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:41,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71424656] [2022-11-20 11:47:41,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:41,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486937679] [2022-11-20 11:47:41,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486937679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:41,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:41,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:47:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522927157] [2022-11-20 11:47:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:41,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:47:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:47:41,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:47:41,299 INFO L87 Difference]: Start difference. First operand 230 states and 291 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 8 states have internal predecessors, (104), 2 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 5 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 11:47:41,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:41,430 INFO L93 Difference]: Finished difference Result 426 states and 543 transitions. [2022-11-20 11:47:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:47:41,431 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 8 states have internal predecessors, (104), 2 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 5 states have call predecessors, (26), 2 states have call successors, (26) Word has length 215 [2022-11-20 11:47:41,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:41,434 INFO L225 Difference]: With dead ends: 426 [2022-11-20 11:47:41,435 INFO L226 Difference]: Without dead ends: 240 [2022-11-20 11:47:41,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:47:41,439 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 13 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:41,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2183 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:47:41,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-20 11:47:41,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 228. [2022-11-20 11:47:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 160 states have (on average 1.15625) internal successors, (185), 163 states have internal predecessors, (185), 45 states have call successors, (45), 17 states have call predecessors, (45), 22 states have return successors, (57), 47 states have call predecessors, (57), 44 states have call successors, (57) [2022-11-20 11:47:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 287 transitions. [2022-11-20 11:47:41,457 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 287 transitions. Word has length 215 [2022-11-20 11:47:41,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:41,459 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 287 transitions. [2022-11-20 11:47:41,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 8 states have internal predecessors, (104), 2 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 5 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 11:47:41,460 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 287 transitions. [2022-11-20 11:47:41,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-20 11:47:41,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:41,462 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 11:47:41,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:41,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:47:41,673 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:41,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1509739381, now seen corresponding path program 1 times [2022-11-20 11:47:41,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:41,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131786096] [2022-11-20 11:47:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:41,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:41,768 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:41,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [826343498] [2022-11-20 11:47:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:41,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:41,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:41,770 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:41,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 11:47:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:42,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 112 conjunts are in the unsatisfiable core [2022-11-20 11:47:42,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:42,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:47:43,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:47:45,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:47:45,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:47:48,043 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2517 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2517) |c_#memory_int|)) is different from true [2022-11-20 11:47:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 152 proven. 19 refuted. 3 times theorem prover too weak. 68 trivial. 3 not checked. [2022-11-20 11:47:48,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:49,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:49,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131786096] [2022-11-20 11:47:49,606 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:49,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826343498] [2022-11-20 11:47:49,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826343498] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:49,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:47:49,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-20 11:47:49,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484272028] [2022-11-20 11:47:49,607 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:49,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:47:49,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:49,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:47:49,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=856, Unknown=38, NotChecked=60, Total=1056 [2022-11-20 11:47:49,608 INFO L87 Difference]: Start difference. First operand 228 states and 287 transitions. Second operand has 32 states, 28 states have (on average 4.071428571428571) internal successors, (114), 27 states have internal predecessors, (114), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (27), 12 states have call predecessors, (27), 12 states have call successors, (27) [2022-11-20 11:47:50,130 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2517 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2517) |c_#memory_int|)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_120| Int) (v_ArrVal_2514 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_120| v_ArrVal_2514)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_120|) 0))) (exists ((v_ArrVal_2515 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2515)))) is different from true [2022-11-20 11:47:50,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:50,872 INFO L93 Difference]: Finished difference Result 488 states and 614 transitions. [2022-11-20 11:47:50,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:47:50,873 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 4.071428571428571) internal successors, (114), 27 states have internal predecessors, (114), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (27), 12 states have call predecessors, (27), 12 states have call successors, (27) Word has length 203 [2022-11-20 11:47:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:50,876 INFO L225 Difference]: With dead ends: 488 [2022-11-20 11:47:50,876 INFO L226 Difference]: Without dead ends: 305 [2022-11-20 11:47:50,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 251 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=132, Invalid=1231, Unknown=51, NotChecked=146, Total=1560 [2022-11-20 11:47:50,878 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 84 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1750 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:50,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1457 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 902 Invalid, 0 Unknown, 1750 Unchecked, 0.8s Time] [2022-11-20 11:47:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-20 11:47:50,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 280. [2022-11-20 11:47:50,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 199 states have (on average 1.150753768844221) internal successors, (229), 203 states have internal predecessors, (229), 51 states have call successors, (51), 23 states have call predecessors, (51), 29 states have return successors, (74), 53 states have call predecessors, (74), 50 states have call successors, (74) [2022-11-20 11:47:50,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 354 transitions. [2022-11-20 11:47:50,901 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 354 transitions. Word has length 203 [2022-11-20 11:47:50,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:50,902 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 354 transitions. [2022-11-20 11:47:50,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 4.071428571428571) internal successors, (114), 27 states have internal predecessors, (114), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (27), 12 states have call predecessors, (27), 12 states have call successors, (27) [2022-11-20 11:47:50,902 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 354 transitions. [2022-11-20 11:47:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-20 11:47:50,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:50,905 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:50,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:51,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:47:51,117 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:51,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:51,118 INFO L85 PathProgramCache]: Analyzing trace with hash 247809849, now seen corresponding path program 1 times [2022-11-20 11:47:51,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:51,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546678533] [2022-11-20 11:47:51,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:51,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:51,205 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:51,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378706544] [2022-11-20 11:47:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:51,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:51,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:51,207 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:51,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 11:47:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:52,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:47:52,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-20 11:47:52,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:52,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:52,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546678533] [2022-11-20 11:47:52,505 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:52,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378706544] [2022-11-20 11:47:52,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378706544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:52,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:52,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:47:52,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106808789] [2022-11-20 11:47:52,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:52,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:47:52,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:52,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:47:52,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:47:52,508 INFO L87 Difference]: Start difference. First operand 280 states and 354 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 11:47:52,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:52,559 INFO L93 Difference]: Finished difference Result 472 states and 604 transitions. [2022-11-20 11:47:52,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:47:52,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 201 [2022-11-20 11:47:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:52,562 INFO L225 Difference]: With dead ends: 472 [2022-11-20 11:47:52,562 INFO L226 Difference]: Without dead ends: 285 [2022-11-20 11:47:52,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:47:52,564 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 7 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:52,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 603 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:47:52,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-20 11:47:52,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 281. [2022-11-20 11:47:52,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 200 states have (on average 1.15) internal successors, (230), 204 states have internal predecessors, (230), 51 states have call successors, (51), 23 states have call predecessors, (51), 29 states have return successors, (74), 53 states have call predecessors, (74), 50 states have call successors, (74) [2022-11-20 11:47:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 355 transitions. [2022-11-20 11:47:52,592 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 355 transitions. Word has length 201 [2022-11-20 11:47:52,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:52,593 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 355 transitions. [2022-11-20 11:47:52,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 11:47:52,593 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 355 transitions. [2022-11-20 11:47:52,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-20 11:47:52,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:52,596 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:52,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:52,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:52,811 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:52,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:52,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1789238695, now seen corresponding path program 1 times [2022-11-20 11:47:52,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:52,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024826765] [2022-11-20 11:47:52,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:52,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:52,924 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:52,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112702285] [2022-11-20 11:47:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:52,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:52,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:52,927 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:52,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 11:47:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:53,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 11:47:53,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:53,761 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 9 [2022-11-20 11:47:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 11:47:53,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:53,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:53,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024826765] [2022-11-20 11:47:53,975 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:47:53,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112702285] [2022-11-20 11:47:53,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112702285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:53,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:53,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:47:53,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043709851] [2022-11-20 11:47:53,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:53,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:47:53,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:53,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:47:53,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:47:53,978 INFO L87 Difference]: Start difference. First operand 281 states and 355 transitions. Second operand has 15 states, 12 states have (on average 9.166666666666666) internal successors, (110), 13 states have internal predecessors, (110), 5 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-20 11:47:54,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:54,567 INFO L93 Difference]: Finished difference Result 492 states and 627 transitions. [2022-11-20 11:47:54,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:47:54,568 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 9.166666666666666) internal successors, (110), 13 states have internal predecessors, (110), 5 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 219 [2022-11-20 11:47:54,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:54,570 INFO L225 Difference]: With dead ends: 492 [2022-11-20 11:47:54,571 INFO L226 Difference]: Without dead ends: 307 [2022-11-20 11:47:54,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:47:54,572 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 17 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:54,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2553 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:47:54,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-20 11:47:54,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 288. [2022-11-20 11:47:54,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 205 states have (on average 1.146341463414634) internal successors, (235), 210 states have internal predecessors, (235), 51 states have call successors, (51), 23 states have call predecessors, (51), 31 states have return successors, (77), 54 states have call predecessors, (77), 50 states have call successors, (77) [2022-11-20 11:47:54,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 363 transitions. [2022-11-20 11:47:54,599 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 363 transitions. Word has length 219 [2022-11-20 11:47:54,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:54,599 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 363 transitions. [2022-11-20 11:47:54,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 9.166666666666666) internal successors, (110), 13 states have internal predecessors, (110), 5 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-20 11:47:54,600 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 363 transitions. [2022-11-20 11:47:54,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-20 11:47:54,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:54,603 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:54,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:54,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:54,818 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1725283338, now seen corresponding path program 1 times [2022-11-20 11:47:54,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:54,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380604433] [2022-11-20 11:47:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:54,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:54,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:47:54,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147377476] [2022-11-20 11:47:54,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:54,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:54,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:54,906 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:54,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 11:47:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:55,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 142 conjunts are in the unsatisfiable core [2022-11-20 11:47:55,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:55,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:47:56,592 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 25 treesize of output 24 [2022-11-20 11:47:56,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 11:47:56,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:47:56,781 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:47:56,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 11:47:58,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:47:58,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:48:01,976 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3124 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3124))) is different from true [2022-11-20 11:48:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 143 proven. 21 refuted. 3 times theorem prover too weak. 68 trivial. 3 not checked. [2022-11-20 11:48:02,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:48:03,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:03,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380604433] [2022-11-20 11:48:03,916 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:48:03,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147377476] [2022-11-20 11:48:03,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147377476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:48:03,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:48:03,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2022-11-20 11:48:03,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960644284] [2022-11-20 11:48:03,917 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:48:03,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-20 11:48:03,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:03,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-20 11:48:03,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1610, Unknown=57, NotChecked=82, Total=1892 [2022-11-20 11:48:03,919 INFO L87 Difference]: Start difference. First operand 288 states and 363 transitions. Second operand has 40 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 33 states have internal predecessors, (123), 14 states have call successors, (30), 8 states have call predecessors, (30), 14 states have return successors, (29), 13 states have call predecessors, (29), 14 states have call successors, (29) [2022-11-20 11:48:04,594 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3122 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3122))) (exists ((v_ArrVal_3124 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3124))) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_181| Int) (v_ArrVal_3121 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_181|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_181| v_ArrVal_3121))))) is different from true [2022-11-20 11:48:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:05,199 INFO L93 Difference]: Finished difference Result 589 states and 743 transitions. [2022-11-20 11:48:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:48:05,200 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 33 states have internal predecessors, (123), 14 states have call successors, (30), 8 states have call predecessors, (30), 14 states have return successors, (29), 13 states have call predecessors, (29), 14 states have call successors, (29) Word has length 215 [2022-11-20 11:48:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:05,203 INFO L225 Difference]: With dead ends: 589 [2022-11-20 11:48:05,203 INFO L226 Difference]: Without dead ends: 366 [2022-11-20 11:48:05,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 261 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=190, Invalid=2197, Unknown=71, NotChecked=194, Total=2652 [2022-11-20 11:48:05,206 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 45 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1989 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:05,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2560 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 707 Invalid, 0 Unknown, 1989 Unchecked, 0.7s Time] [2022-11-20 11:48:05,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-20 11:48:05,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2022-11-20 11:48:05,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 261 states have (on average 1.1455938697318007) internal successors, (299), 267 states have internal predecessors, (299), 62 states have call successors, (62), 31 states have call predecessors, (62), 40 states have return successors, (99), 65 states have call predecessors, (99), 61 states have call successors, (99) [2022-11-20 11:48:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 460 transitions. [2022-11-20 11:48:05,246 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 460 transitions. Word has length 215 [2022-11-20 11:48:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:05,247 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 460 transitions. [2022-11-20 11:48:05,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 33 states have internal predecessors, (123), 14 states have call successors, (30), 8 states have call predecessors, (30), 14 states have return successors, (29), 13 states have call predecessors, (29), 14 states have call successors, (29) [2022-11-20 11:48:05,247 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 460 transitions. [2022-11-20 11:48:05,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-20 11:48:05,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:05,250 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-20 11:48:05,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 11:48:05,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:05,463 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:05,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash 493884550, now seen corresponding path program 1 times [2022-11-20 11:48:05,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:05,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68605517] [2022-11-20 11:48:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:05,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:05,550 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:48:05,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607308804] [2022-11-20 11:48:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:05,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:05,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:48:05,553 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:48:05,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a272b4a6-6abd-4d98-8506-0c83f052e5f8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 11:48:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:09,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 427 conjunts are in the unsatisfiable core [2022-11-20 11:48:09,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:09,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:48:09,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:48:09,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:48:09,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:48:10,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 11:48:10,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:48:10,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:48:10,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:48:10,513 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_3402 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_3402)) (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) (exists ((v_ArrVal_3407 Int) (v_ArrVal_3408 Int) (v_ArrVal_3404 Int) (v_ArrVal_3410 Int) (v_ArrVal_3411 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int) (v_ArrVal_3409 Int)) (let ((.cse0 (+ ensure_array_list_has_allocated_data_member_~list.offset 32))) (and (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_3404) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_3411)) |c_#memory_$Pointer$.base|) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset) (= (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_3408) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_3410)) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_3407) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_3409)) |c_#memory_$Pointer$.offset|))))) is different from true [2022-11-20 11:48:10,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:10,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:10,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-20 11:48:10,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 11:48:10,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:10,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:10,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-20 11:48:10,612 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:48:10,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 11:48:10,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:48:10,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:10,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:48:10,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:48:10,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:48:10,941 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 5 treesize of output 3 [2022-11-20 11:48:11,153 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3423 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3423))) (exists ((v_ArrVal_3422 Int) (|v___CPROVER_overflow_mult_~#c~1.base_226| Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_226| v_ArrVal_3422)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_226|) 0))) (exists ((v_ArrVal_3424 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3424) |c_#memory_int|)) (exists ((v_ArrVal_3425 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3425) |c_#memory_$Pointer$.base|))) is different from true [2022-11-20 11:48:13,291 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 39 treesize of output 33 [2022-11-20 11:48:13,300 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 33 treesize of output 29 [2022-11-20 11:48:13,311 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 26 treesize of output 20 [2022-11-20 11:48:13,320 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 26 treesize of output 20 [2022-11-20 11:48:13,329 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 20 treesize of output 16 [2022-11-20 11:48:13,337 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 20 treesize of output 16 [2022-11-20 11:48:13,351 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 11:48:13,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-11-20 11:48:19,815 INFO L321 Elim1Store]: treesize reduction 870, result has 31.2 percent of original size [2022-11-20 11:48:19,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 58 case distinctions, treesize of input 7926 treesize of output 8267 [2022-11-20 11:48:20,071 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 7834 treesize of output 7816 [2022-11-20 11:48:20,458 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 7796 treesize of output 7792 [2022-11-20 11:48:20,800 INFO L321 Elim1Store]: treesize reduction 66, result has 39.4 percent of original size [2022-11-20 11:48:20,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 7808 treesize of output 7870 [2022-11-20 11:48:21,003 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 7832 treesize of output 7814 [2022-11-20 11:48:21,392 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 7794 treesize of output 7790 [2022-11-20 11:48:21,563 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 7790 treesize of output 7786 [2022-11-20 11:48:21,711 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 7786 treesize of output 7782