./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R --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 bdcb32e90fffda272ef4414cda96d9fa59a53e22555da4af86a588968a9c4dd7 --- 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-38b53e6 [2022-11-25 18:26:43,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:26:43,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:26:43,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:26:43,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:26:43,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:26:43,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:26:43,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:26:43,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:26:43,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:26:43,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:26:43,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:26:43,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:26:43,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:26:43,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:26:43,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:26:43,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:26:43,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:26:43,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:26:43,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:26:43,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:26:43,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:26:43,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:26:43,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:26:43,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:26:43,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:26:43,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:26:43,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:26:43,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:26:43,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:26:43,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:26:43,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:26:43,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:26:43,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:26:43,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:26:43,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:26:43,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:26:43,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:26:43,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:26:43,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:26:43,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:26:43,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-25 18:26:43,542 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:26:43,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:26:43,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:26:43,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:26:43,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:26:43,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:26:43,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:26:43,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:26:43,547 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:26:43,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:26:43,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:26:43,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:26:43,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:26:43,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:26:43,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:26:43,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:26:43,550 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:26:43,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:26:43,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:26:43,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:26:43,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:26:43,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:26:43,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:26:43,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:26:43,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:26:43,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:26:43,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:26:43,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:26:43,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:26:43,555 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:26:43,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:26:43,556 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdcb32e90fffda272ef4414cda96d9fa59a53e22555da4af86a588968a9c4dd7 [2022-11-25 18:26:43,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:26:43,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:26:43,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:26:43,979 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:26:43,980 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:26:43,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2022-11-25 18:26:47,754 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:26:48,682 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:26:48,683 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2022-11-25 18:26:48,771 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/data/0063826f4/9889cea0d7c549da8e51688e121956eb/FLAG252843e27 [2022-11-25 18:26:48,797 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/data/0063826f4/9889cea0d7c549da8e51688e121956eb [2022-11-25 18:26:48,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:26:48,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:26:48,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:26:48,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:26:48,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:26:48,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:26:48" (1/1) ... [2022-11-25 18:26:48,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441222a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:48, skipping insertion in model container [2022-11-25 18:26:48,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:26:48" (1/1) ... [2022-11-25 18:26:48,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:26:49,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:26:50,281 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-25 18:26:50,300 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irq [2022-11-25 18:26:50,320 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-25 18:26:50,339 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irq [2022-11-25 18:26:50,359 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-11-25 18:26:50,609 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:50,842 WARN L623 FunctionHandler]: Unknown extern function pci_bus_write_config_word [2022-11-25 18:26:50,908 WARN L623 FunctionHandler]: Unknown extern function pci_enable_msi_range [2022-11-25 18:26:50,955 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-25 18:26:50,961 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-25 18:26:50,962 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-11-25 18:26:50,972 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-11-25 18:26:50,981 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-11-25 18:26:50,991 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-11-25 18:26:51,006 WARN L623 FunctionHandler]: Unknown extern function debug_dma_mapping_error [2022-11-25 18:26:51,047 WARN L623 FunctionHandler]: Unknown extern function dma_supported [2022-11-25 18:26:51,057 WARN L623 FunctionHandler]: Unknown extern function dma_alloc_attrs [2022-11-25 18:26:51,067 WARN L623 FunctionHandler]: Unknown extern function dma_free_attrs [2022-11-25 18:26:51,106 WARN L623 FunctionHandler]: Unknown extern function dma_set_mask [2022-11-25 18:26:51,165 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-11-25 18:26:51,338 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-11-25 18:26:51,446 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-11-25 18:26:51,460 WARN L623 FunctionHandler]: Unknown extern function netif_receive_skb_sk [2022-11-25 18:26:51,612 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:51,614 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:51,675 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 18:26:51,725 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:51,730 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 18:26:51,812 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:51,816 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:51,824 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 18:26:51,848 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:51,850 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:51,857 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:51,860 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:51,871 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:51,872 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:51,880 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:51,883 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:51,935 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:51,948 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:51,978 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:51,978 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:51,979 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:51,980 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:51,982 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,088 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,090 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,133 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,135 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,172 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,180 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,182 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,184 WARN L623 FunctionHandler]: Unknown extern function netif_carrier_on [2022-11-25 18:26:52,185 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,187 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,195 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,198 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,202 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,252 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-25 18:26:52,253 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-25 18:26:52,253 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-25 18:26:52,280 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,282 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,283 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 18:26:52,305 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:52,307 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,308 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,333 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 18:26:52,334 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-11-25 18:26:52,343 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 18:26:52,344 WARN L623 FunctionHandler]: Unknown extern function skb_push [2022-11-25 18:26:52,347 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,353 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-11-25 18:26:52,365 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,375 WARN L623 FunctionHandler]: Unknown extern function __napi_complete [2022-11-25 18:26:52,382 WARN L623 FunctionHandler]: Unknown extern function netif_carrier_off [2022-11-25 18:26:52,384 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:52,385 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,388 WARN L623 FunctionHandler]: Unknown extern function __napi_schedule [2022-11-25 18:26:52,409 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,414 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,417 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,441 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,452 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,454 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,465 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,466 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,474 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,491 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,494 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,502 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,503 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 18:26:52,512 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,520 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,534 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 18:26:52,549 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,551 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,560 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 18:26:52,573 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,577 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,578 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,578 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,579 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,580 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,611 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 18:26:52,611 WARN L623 FunctionHandler]: Unknown extern function netif_carrier_off [2022-11-25 18:26:52,622 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-11-25 18:26:52,623 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,645 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,646 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,651 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,664 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,671 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,677 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,679 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,685 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,686 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,687 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,694 WARN L623 FunctionHandler]: Unknown extern function netif_carrier_off [2022-11-25 18:26:52,695 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,696 WARN L623 FunctionHandler]: Unknown extern function pci_disable_msi [2022-11-25 18:26:52,697 WARN L623 FunctionHandler]: Unknown extern function napi_disable [2022-11-25 18:26:52,698 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,699 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,700 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,707 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,708 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,709 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,711 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,712 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,712 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,713 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,714 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:52,715 WARN L623 FunctionHandler]: Unknown extern function pci_disable_msi [2022-11-25 18:26:52,721 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,723 WARN L623 FunctionHandler]: Unknown extern function rtnl_lock [2022-11-25 18:26:52,723 WARN L623 FunctionHandler]: Unknown extern function dev_close [2022-11-25 18:26:52,723 WARN L623 FunctionHandler]: Unknown extern function rtnl_unlock [2022-11-25 18:26:52,724 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,725 WARN L623 FunctionHandler]: Unknown extern function rtnl_lock [2022-11-25 18:26:52,725 WARN L623 FunctionHandler]: Unknown extern function dev_close [2022-11-25 18:26:52,725 WARN L623 FunctionHandler]: Unknown extern function rtnl_unlock [2022-11-25 18:26:52,731 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-11-25 18:26:52,751 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,760 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,762 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 18:26:52,762 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,766 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,767 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:52,769 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,770 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:52,796 WARN L623 FunctionHandler]: Unknown extern function pci_enable_device [2022-11-25 18:26:52,800 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:52,801 WARN L623 FunctionHandler]: Unknown extern function pci_request_regions [2022-11-25 18:26:52,804 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:52,804 WARN L623 FunctionHandler]: Unknown extern function pci_set_master [2022-11-25 18:26:52,811 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:52,812 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-11-25 18:26:52,814 WARN L623 FunctionHandler]: Unknown extern function pci_ioremap_bar [2022-11-25 18:26:52,815 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:52,815 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 18:26:52,816 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 18:26:52,817 WARN L623 FunctionHandler]: Unknown extern function netif_napi_add [2022-11-25 18:26:52,817 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:52,819 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:52,819 WARN L623 FunctionHandler]: Unknown extern function netif_carrier_off [2022-11-25 18:26:52,820 WARN L623 FunctionHandler]: Unknown extern function __alloc_workqueue_key [2022-11-25 18:26:52,821 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-25 18:26:52,822 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-25 18:26:52,822 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-11-25 18:26:52,823 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-25 18:26:52,823 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-25 18:26:52,824 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-11-25 18:26:52,825 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-25 18:26:52,825 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-25 18:26:52,826 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-11-25 18:26:52,827 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:52,827 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:52,828 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-25 18:26:52,829 WARN L623 FunctionHandler]: Unknown extern function pci_release_regions [2022-11-25 18:26:52,829 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-11-25 18:26:52,835 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-25 18:26:52,836 WARN L623 FunctionHandler]: Unknown extern function pci_release_regions [2022-11-25 18:26:52,899 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 18:26:52,900 WARN L623 FunctionHandler]: Unknown extern function ldv_shutdown_6 [2022-11-25 18:26:52,901 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-11-25 18:26:52,902 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-11-25 18:26:52,902 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-11-25 18:26:52,903 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-11-25 18:26:52,903 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-11-25 18:26:52,905 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_init_7 [2022-11-25 18:26:52,906 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_uninit_7 [2022-11-25 18:26:52,907 WARN L623 FunctionHandler]: Unknown extern function ethtool_op_get_link [2022-11-25 18:26:52,910 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-11-25 18:26:52,913 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-11-25 18:26:52,915 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-11-25 18:26:52,915 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-11-25 18:26:52,924 WARN L623 FunctionHandler]: Unknown extern function flush_workqueue [2022-11-25 18:26:52,926 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-11-25 18:26:52,927 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:52,928 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:52,930 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:52,930 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:52,931 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:52,932 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:52,933 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:52,934 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 18:26:52,935 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 18:26:52,935 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-25 18:26:52,936 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 18:26:52,937 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 18:26:52,938 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-25 18:26:52,938 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-11-25 18:26:52,939 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-25 18:26:52,939 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-25 18:26:52,940 WARN L623 FunctionHandler]: Unknown extern function cancel_delayed_work [2022-11-25 18:26:52,941 WARN L623 FunctionHandler]: Unknown extern function cancel_delayed_work [2022-11-25 18:26:52,942 WARN L623 FunctionHandler]: Unknown extern function destroy_workqueue [2022-11-25 18:26:52,942 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-25 18:26:52,943 WARN L623 FunctionHandler]: Unknown extern function __pci_register_driver [2022-11-25 18:26:52,943 WARN L623 FunctionHandler]: Unknown extern function pci_unregister_driver [2022-11-25 18:26:52,949 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_b96ad492-4bf7-463d-b907-56c9a787c70f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i[355549,355562] [2022-11-25 18:26:52,993 WARN L623 FunctionHandler]: Unknown extern function ldv_some_page [2022-11-25 18:26:53,004 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,007 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,016 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,028 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,030 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,032 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:26:53,074 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:26:53,297 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-25 18:26:53,297 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irq [2022-11-25 18:26:53,297 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-25 18:26:53,298 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irq [2022-11-25 18:26:53,298 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-11-25 18:26:53,300 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,307 WARN L623 FunctionHandler]: Unknown extern function pci_bus_write_config_word [2022-11-25 18:26:53,314 WARN L623 FunctionHandler]: Unknown extern function pci_enable_msi_range [2022-11-25 18:26:53,320 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-25 18:26:53,321 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-25 18:26:53,321 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-11-25 18:26:53,323 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-11-25 18:26:53,324 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-11-25 18:26:53,325 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-11-25 18:26:53,326 WARN L623 FunctionHandler]: Unknown extern function debug_dma_mapping_error [2022-11-25 18:26:53,327 WARN L623 FunctionHandler]: Unknown extern function dma_supported [2022-11-25 18:26:53,328 WARN L623 FunctionHandler]: Unknown extern function dma_alloc_attrs [2022-11-25 18:26:53,328 WARN L623 FunctionHandler]: Unknown extern function dma_free_attrs [2022-11-25 18:26:53,330 WARN L623 FunctionHandler]: Unknown extern function dma_set_mask [2022-11-25 18:26:53,332 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-11-25 18:26:53,336 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-11-25 18:26:53,340 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-11-25 18:26:53,340 WARN L623 FunctionHandler]: Unknown extern function netif_receive_skb_sk [2022-11-25 18:26:53,349 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,350 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,354 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 18:26:53,360 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,361 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 18:26:53,371 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:53,375 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,376 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 18:26:53,379 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:53,380 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:53,382 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:53,383 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:53,384 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:53,385 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:53,386 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:53,387 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:53,391 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,395 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,401 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,402 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,403 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,403 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,405 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,411 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,413 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,423 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,425 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,434 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,436 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,438 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,439 WARN L623 FunctionHandler]: Unknown extern function netif_carrier_on [2022-11-25 18:26:53,439 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,441 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,443 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,444 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,452 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,459 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-25 18:26:53,459 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-25 18:26:53,460 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-25 18:26:53,463 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,466 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,466 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 18:26:53,472 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:53,473 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,473 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,478 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 18:26:53,479 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-11-25 18:26:53,481 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 18:26:53,481 WARN L623 FunctionHandler]: Unknown extern function skb_push [2022-11-25 18:26:53,482 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,483 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-11-25 18:26:53,486 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,489 WARN L623 FunctionHandler]: Unknown extern function __napi_complete [2022-11-25 18:26:53,490 WARN L623 FunctionHandler]: Unknown extern function netif_carrier_off [2022-11-25 18:26:53,491 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-25 18:26:53,491 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,493 WARN L623 FunctionHandler]: Unknown extern function __napi_schedule [2022-11-25 18:26:53,497 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,499 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,501 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,516 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,518 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,519 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,521 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,522 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,523 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,525 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,585 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,586 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,587 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 18:26:53,588 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,590 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,590 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 18:26:53,596 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,597 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,599 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 18:26:53,601 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,603 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,603 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,604 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,604 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,605 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,610 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 18:26:53,611 WARN L623 FunctionHandler]: Unknown extern function netif_carrier_off [2022-11-25 18:26:53,618 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-11-25 18:26:53,619 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,621 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,622 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,625 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,629 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,630 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,632 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,635 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,640 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,642 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,643 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,643 WARN L623 FunctionHandler]: Unknown extern function netif_carrier_off [2022-11-25 18:26:53,644 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,645 WARN L623 FunctionHandler]: Unknown extern function pci_disable_msi [2022-11-25 18:26:53,646 WARN L623 FunctionHandler]: Unknown extern function napi_disable [2022-11-25 18:26:53,646 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,647 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,647 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,648 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,653 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,654 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,655 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,655 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,656 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,656 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,657 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:26:53,657 WARN L623 FunctionHandler]: Unknown extern function pci_disable_msi [2022-11-25 18:26:53,658 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,658 WARN L623 FunctionHandler]: Unknown extern function rtnl_lock [2022-11-25 18:26:53,659 WARN L623 FunctionHandler]: Unknown extern function dev_close [2022-11-25 18:26:53,659 WARN L623 FunctionHandler]: Unknown extern function rtnl_unlock [2022-11-25 18:26:53,659 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,660 WARN L623 FunctionHandler]: Unknown extern function rtnl_lock [2022-11-25 18:26:53,660 WARN L623 FunctionHandler]: Unknown extern function dev_close [2022-11-25 18:26:53,660 WARN L623 FunctionHandler]: Unknown extern function rtnl_unlock [2022-11-25 18:26:53,661 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-11-25 18:26:53,666 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,667 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,671 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 18:26:53,672 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,672 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,673 WARN L623 FunctionHandler]: Unknown extern function netdev_printk [2022-11-25 18:26:53,674 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,674 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-25 18:26:53,679 WARN L623 FunctionHandler]: Unknown extern function pci_enable_device [2022-11-25 18:26:53,680 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:53,680 WARN L623 FunctionHandler]: Unknown extern function pci_request_regions [2022-11-25 18:26:53,681 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:53,681 WARN L623 FunctionHandler]: Unknown extern function pci_set_master [2022-11-25 18:26:53,682 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:53,682 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-11-25 18:26:53,686 WARN L623 FunctionHandler]: Unknown extern function pci_ioremap_bar [2022-11-25 18:26:53,686 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:53,687 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 18:26:53,687 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 18:26:53,688 WARN L623 FunctionHandler]: Unknown extern function netif_napi_add [2022-11-25 18:26:53,688 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:53,690 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:53,690 WARN L623 FunctionHandler]: Unknown extern function netif_carrier_off [2022-11-25 18:26:53,690 WARN L623 FunctionHandler]: Unknown extern function __alloc_workqueue_key [2022-11-25 18:26:53,691 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-25 18:26:53,692 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-25 18:26:53,692 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-11-25 18:26:53,693 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-25 18:26:53,693 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-25 18:26:53,694 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-11-25 18:26:53,694 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-25 18:26:53,694 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-25 18:26:53,695 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-11-25 18:26:53,696 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:53,696 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:26:53,698 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-25 18:26:53,698 WARN L623 FunctionHandler]: Unknown extern function pci_release_regions [2022-11-25 18:26:53,699 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-11-25 18:26:53,700 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-25 18:26:53,701 WARN L623 FunctionHandler]: Unknown extern function pci_release_regions [2022-11-25 18:26:53,718 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 18:26:53,722 WARN L623 FunctionHandler]: Unknown extern function ldv_shutdown_6 [2022-11-25 18:26:53,723 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-11-25 18:26:53,723 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-11-25 18:26:53,723 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-11-25 18:26:53,724 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-11-25 18:26:53,724 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-11-25 18:26:53,726 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_init_7 [2022-11-25 18:26:53,726 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_uninit_7 [2022-11-25 18:26:53,728 WARN L623 FunctionHandler]: Unknown extern function ethtool_op_get_link [2022-11-25 18:26:53,730 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-11-25 18:26:53,731 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-11-25 18:26:53,732 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-11-25 18:26:53,732 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-11-25 18:26:53,733 WARN L623 FunctionHandler]: Unknown extern function flush_workqueue [2022-11-25 18:26:53,734 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-11-25 18:26:53,734 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,735 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,736 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,736 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,736 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,737 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,738 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,738 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 18:26:53,738 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 18:26:53,739 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-25 18:26:53,739 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 18:26:53,740 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 18:26:53,741 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-25 18:26:53,741 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-11-25 18:26:53,742 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-25 18:26:53,742 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-25 18:26:53,742 WARN L623 FunctionHandler]: Unknown extern function cancel_delayed_work [2022-11-25 18:26:53,743 WARN L623 FunctionHandler]: Unknown extern function cancel_delayed_work [2022-11-25 18:26:53,743 WARN L623 FunctionHandler]: Unknown extern function destroy_workqueue [2022-11-25 18:26:53,744 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-25 18:26:53,744 WARN L623 FunctionHandler]: Unknown extern function __pci_register_driver [2022-11-25 18:26:53,744 WARN L623 FunctionHandler]: Unknown extern function pci_unregister_driver [2022-11-25 18:26:53,745 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_b96ad492-4bf7-463d-b907-56c9a787c70f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i[355549,355562] [2022-11-25 18:26:53,747 WARN L623 FunctionHandler]: Unknown extern function ldv_some_page [2022-11-25 18:26:53,747 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,748 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,751 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,753 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,755 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,756 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:26:53,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:26:54,011 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:26:54,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:54 WrapperNode [2022-11-25 18:26:54,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:26:54,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:26:54,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:26:54,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:26:54,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:54" (1/1) ... [2022-11-25 18:26:54,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:54" (1/1) ... [2022-11-25 18:26:54,451 INFO L138 Inliner]: procedures = 409, calls = 2615, calls flagged for inlining = 208, calls inlined = 189, statements flattened = 5778 [2022-11-25 18:26:54,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:26:54,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:26:54,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:26:54,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:26:54,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:54" (1/1) ... [2022-11-25 18:26:54,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:54" (1/1) ... [2022-11-25 18:26:54,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:54" (1/1) ... [2022-11-25 18:26:54,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:54" (1/1) ... [2022-11-25 18:26:54,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:54" (1/1) ... [2022-11-25 18:26:54,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:54" (1/1) ... [2022-11-25 18:26:54,739 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:54" (1/1) ... [2022-11-25 18:26:54,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:54" (1/1) ... [2022-11-25 18:26:54,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:26:54,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:26:54,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:26:54,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:26:54,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:54" (1/1) ... [2022-11-25 18:26:54,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:26:54,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:26:54,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:26:54,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:26:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_link_speed [2022-11-25 18:26:54,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_link_speed [2022-11-25 18:26:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-25 18:26:54,945 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-25 18:26:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-25 18:26:54,945 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-25 18:26:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-25 18:26:54,945 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-25 18:26:54,946 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_state_machine_work [2022-11-25 18:26:54,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_state_machine_work [2022-11-25 18:26:54,946 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-25 18:26:54,946 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-25 18:26:54,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-25 18:26:54,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-25 18:26:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-25 18:26:54,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-25 18:26:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-25 18:26:54,947 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-25 18:26:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-25 18:26:54,948 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-25 18:26:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure ql_this_adapter_controls_port [2022-11-25 18:26:54,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_this_adapter_controls_port [2022-11-25 18:26:54,949 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-11-25 18:26:54,949 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-11-25 18:26:54,949 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_interrupts [2022-11-25 18:26:54,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_interrupts [2022-11-25 18:26:54,950 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-25 18:26:54,950 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-25 18:26:54,950 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-25 18:26:54,950 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-25 18:26:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg_l [2022-11-25 18:26:54,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg_l [2022-11-25 18:26:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_send_free_list [2022-11-25 18:26:54,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_send_free_list [2022-11-25 18:26:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-25 18:26:54,952 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-25 18:26:54,952 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-25 18:26:54,952 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-25 18:26:54,952 INFO L130 BoogieDeclarations]: Found specification of procedure ssleep [2022-11-25 18:26:54,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ssleep [2022-11-25 18:26:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_set_mac_address [2022-11-25 18:26:54,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_set_mac_address [2022-11-25 18:26:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cycle_adapter [2022-11-25 18:26:54,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cycle_adapter [2022-11-25 18:26:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mac_cfg_soft_reset [2022-11-25 18:26:54,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mac_cfg_soft_reset [2022-11-25 18:26:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-25 18:26:54,954 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-25 18:26:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-25 18:26:54,954 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-25 18:26:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-25 18:26:54,955 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-25 18:26:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_disable_scan_mode [2022-11-25 18:26:54,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_disable_scan_mode [2022-11-25 18:26:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-25 18:26:54,956 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-25 18:26:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-25 18:26:54,956 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-25 18:26:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:26:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-25 18:26:54,957 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-25 18:26:54,957 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg_l [2022-11-25 18:26:54,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg_l [2022-11-25 18:26:54,957 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2022-11-25 18:26:54,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2022-11-25 18:26:54,957 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-25 18:26:54,958 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-25 18:26:54,958 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-25 18:26:54,958 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-25 18:26:54,958 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-25 18:26:54,958 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-25 18:26:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-25 18:26:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-25 18:26:54,959 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-25 18:26:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-25 18:26:54,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-25 18:26:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 18:26:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_5 [2022-11-25 18:26:54,960 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_5 [2022-11-25 18:26:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page1_reg [2022-11-25 18:26:54,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page1_reg [2022-11-25 18:26:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:26:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-25 18:26:54,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-25 18:26:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-25 18:26:54,961 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-25 18:26:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-25 18:26:54,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-25 18:26:54,963 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2022-11-25 18:26:54,963 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2022-11-25 18:26:54,963 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-25 18:26:54,963 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-25 18:26:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_register_page [2022-11-25 18:26:54,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_register_page [2022-11-25 18:26:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-25 18:26:54,964 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-25 18:26:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg_ex [2022-11-25 18:26:54,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg_ex [2022-11-25 18:26:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure ql_phy_init_ex [2022-11-25 18:26:54,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_phy_init_ex [2022-11-25 18:26:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-25 18:26:54,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-25 18:26:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg_l [2022-11-25 18:26:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg_l [2022-11-25 18:26:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg [2022-11-25 18:26:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg [2022-11-25 18:26:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:26:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2022-11-25 18:26:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2022-11-25 18:26:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page2_reg [2022-11-25 18:26:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page2_reg [2022-11-25 18:26:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:26:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_5 [2022-11-25 18:26:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_5 [2022-11-25 18:26:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg [2022-11-25 18:26:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg [2022-11-25 18:26:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-25 18:26:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-25 18:26:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 18:26:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg [2022-11-25 18:26:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg [2022-11-25 18:26:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2022-11-25 18:26:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2022-11-25 18:26:54,970 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-25 18:26:54,971 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-25 18:26:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_nvram_reg [2022-11-25 18:26:54,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_nvram_reg [2022-11-25 18:26:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-25 18:26:54,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-25 18:26:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-25 18:26:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-25 18:26:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_drvr_lock [2022-11-25 18:26:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_drvr_lock [2022-11-25 18:26:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-25 18:26:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-25 18:26:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_enable_scan_mode [2022-11-25 18:26:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_enable_scan_mode [2022-11-25 18:26:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-25 18:26:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-25 18:26:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure ql_tx_timeout_work [2022-11-25 18:26:54,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_tx_timeout_work [2022-11-25 18:26:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-25 18:26:54,974 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-25 18:26:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-25 18:26:54,975 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-25 18:26:54,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:26:54,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:26:54,975 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_mii_ready [2022-11-25 18:26:54,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_mii_ready [2022-11-25 18:26:54,976 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-25 18:26:54,976 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-25 18:26:54,976 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_large_buffers [2022-11-25 18:26:54,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_large_buffers [2022-11-25 18:26:54,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-25 18:26:54,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 18:26:54,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-25 18:26:54,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-25 18:26:54,977 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-25 18:26:54,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-25 18:26:54,977 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-25 18:26:54,978 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-25 18:26:54,978 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2022-11-25 18:26:54,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2022-11-25 18:26:54,978 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-25 18:26:54,978 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-25 18:26:54,979 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-25 18:26:54,979 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-25 18:26:54,979 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg [2022-11-25 18:26:54,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg [2022-11-25 18:26:54,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-25 18:26:54,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-25 18:26:54,980 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-25 18:26:54,980 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-25 18:26:54,980 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-25 18:26:54,980 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-25 18:26:54,981 INFO L130 BoogieDeclarations]: Found specification of procedure PHY_Setup [2022-11-25 18:26:54,981 INFO L138 BoogieDeclarations]: Found implementation of procedure PHY_Setup [2022-11-25 18:26:54,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-25 18:26:54,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-25 18:26:54,981 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_buffer_queues [2022-11-25 18:26:54,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_buffer_queues [2022-11-25 18:26:54,982 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 18:26:54,982 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 18:26:54,982 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-25 18:26:54,982 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-25 18:26:54,982 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-25 18:26:54,983 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-25 18:26:54,983 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-25 18:26:54,983 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-25 18:26:54,983 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-25 18:26:54,983 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-25 18:26:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:26:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-25 18:26:54,984 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-25 18:26:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 18:26:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-25 18:26:54,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-25 18:26:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2022-11-25 18:26:54,985 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2022-11-25 18:26:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 18:26:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2022-11-25 18:26:54,986 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2022-11-25 18:26:54,986 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-25 18:26:54,986 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-25 18:26:54,986 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-25 18:26:54,986 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-25 18:26:54,987 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-25 18:26:54,987 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-25 18:26:54,987 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page0_reg [2022-11-25 18:26:54,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page0_reg [2022-11-25 18:26:54,987 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-25 18:26:54,988 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-25 18:26:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_link_full_dup [2022-11-25 18:26:54,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_link_full_dup [2022-11-25 18:26:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure ql_reset_work [2022-11-25 18:26:54,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_reset_work [2022-11-25 18:26:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-25 18:26:54,989 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-25 18:26:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_tx_timeout [2022-11-25 18:26:54,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_tx_timeout [2022-11-25 18:26:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure ql_supported_modes [2022-11-25 18:26:54,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_supported_modes [2022-11-25 18:26:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-25 18:26:54,990 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-25 18:26:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-25 18:26:54,990 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-25 18:26:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_fiber [2022-11-25 18:26:54,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_fiber [2022-11-25 18:26:54,991 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-25 18:26:54,991 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-25 18:26:54,991 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-25 18:26:54,991 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-25 18:26:54,992 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_net_req_rsp_queues [2022-11-25 18:26:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_net_req_rsp_queues [2022-11-25 18:26:54,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:26:54,992 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-25 18:26:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-25 18:26:54,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-25 18:26:54,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-25 18:26:54,993 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg_ex [2022-11-25 18:26:54,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg_ex [2022-11-25 18:26:54,993 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2022-11-25 18:26:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2022-11-25 18:26:54,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-25 18:26:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-25 18:26:54,994 INFO L130 BoogieDeclarations]: Found specification of procedure ql_port_start [2022-11-25 18:26:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_port_start [2022-11-25 18:26:54,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-25 18:26:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-25 18:26:54,995 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-25 18:26:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-25 18:26:54,995 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_auto_cfg_status [2022-11-25 18:26:54,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_auto_cfg_status [2022-11-25 18:26:54,996 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg [2022-11-25 18:26:54,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg [2022-11-25 18:26:54,996 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2022-11-25 18:26:54,996 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2022-11-25 18:26:54,996 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-25 18:26:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-25 18:26:54,997 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-25 18:26:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-25 18:26:54,997 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-25 18:26:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-25 18:26:54,998 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-25 18:26:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-25 18:26:54,998 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-25 18:26:54,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:26:54,998 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2022-11-25 18:26:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2022-11-25 18:26:56,236 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:26:56,241 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:26:56,682 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-25 18:27:02,955 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:27:02,992 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:27:02,992 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:27:03,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:27:02 BoogieIcfgContainer [2022-11-25 18:27:03,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:27:03,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:27:03,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:27:03,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:27:03,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:26:48" (1/3) ... [2022-11-25 18:27:03,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed09dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:27:03, skipping insertion in model container [2022-11-25 18:27:03,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:54" (2/3) ... [2022-11-25 18:27:03,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed09dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:27:03, skipping insertion in model container [2022-11-25 18:27:03,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:27:02" (3/3) ... [2022-11-25 18:27:03,015 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2022-11-25 18:27:03,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:27:03,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:27:03,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:27:03,187 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;@85965cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:27:03,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:27:03,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 2266 states, 1513 states have (on average 1.3027098479841375) internal successors, (1971), 1569 states have internal predecessors, (1971), 626 states have call successors, (626), 126 states have call predecessors, (626), 125 states have return successors, (616), 603 states have call predecessors, (616), 616 states have call successors, (616) [2022-11-25 18:27:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-25 18:27:03,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:03,255 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 18:27:03,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:03,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:03,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1290064966, now seen corresponding path program 1 times [2022-11-25 18:27:03,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:03,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97642029] [2022-11-25 18:27:03,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:03,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:04,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:04,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97642029] [2022-11-25 18:27:04,150 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:27:04,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666436365] [2022-11-25 18:27:04,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:04,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:04,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:04,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:04,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:27:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:05,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 3425 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 18:27:05,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-25 18:27:05,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:05,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666436365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:05,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:05,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:27:05,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265880832] [2022-11-25 18:27:05,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:06,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:27:06,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:06,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:27:06,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:27:06,076 INFO L87 Difference]: Start difference. First operand has 2266 states, 1513 states have (on average 1.3027098479841375) internal successors, (1971), 1569 states have internal predecessors, (1971), 626 states have call successors, (626), 126 states have call predecessors, (626), 125 states have return successors, (616), 603 states have call predecessors, (616), 616 states have call successors, (616) Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 18:27:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:06,479 INFO L93 Difference]: Finished difference Result 4527 states and 6469 transitions. [2022-11-25 18:27:06,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:27:06,483 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 205 [2022-11-25 18:27:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:06,534 INFO L225 Difference]: With dead ends: 4527 [2022-11-25 18:27:06,535 INFO L226 Difference]: Without dead ends: 2240 [2022-11-25 18:27:06,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:27:06,571 INFO L413 NwaCegarLoop]: 3209 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, 3209 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 [2022-11-25 18:27:06,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3209 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:06,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2022-11-25 18:27:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2240. [2022-11-25 18:27:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 1499 states have (on average 1.2928619079386257) internal successors, (1938), 1543 states have internal predecessors, (1938), 616 states have call successors, (616), 125 states have call predecessors, (616), 124 states have return successors, (615), 602 states have call predecessors, (615), 615 states have call successors, (615) [2022-11-25 18:27:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 3169 transitions. [2022-11-25 18:27:06,875 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 3169 transitions. Word has length 205 [2022-11-25 18:27:06,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:06,876 INFO L495 AbstractCegarLoop]: Abstraction has 2240 states and 3169 transitions. [2022-11-25 18:27:06,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 18:27:06,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 3169 transitions. [2022-11-25 18:27:06,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-25 18:27:06,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:06,907 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 18:27:06,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:07,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 18:27:07,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:07,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:07,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1174632890, now seen corresponding path program 1 times [2022-11-25 18:27:07,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:07,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496828246] [2022-11-25 18:27:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:07,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:07,438 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:27:07,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852198183] [2022-11-25 18:27:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:07,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:07,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:07,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:07,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:27:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:09,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 3425 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:27:09,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-25 18:27:09,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:09,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:09,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496828246] [2022-11-25 18:27:09,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:27:09,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852198183] [2022-11-25 18:27:09,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852198183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:09,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:09,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:27:09,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711989139] [2022-11-25 18:27:09,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:09,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:09,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:09,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:09,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:09,160 INFO L87 Difference]: Start difference. First operand 2240 states and 3169 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 18:27:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:09,697 INFO L93 Difference]: Finished difference Result 6356 states and 9002 transitions. [2022-11-25 18:27:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:09,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 205 [2022-11-25 18:27:09,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:09,733 INFO L225 Difference]: With dead ends: 6356 [2022-11-25 18:27:09,733 INFO L226 Difference]: Without dead ends: 4143 [2022-11-25 18:27:09,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:09,751 INFO L413 NwaCegarLoop]: 3666 mSDtfsCounter, 2790 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2790 SdHoareTripleChecker+Valid, 6658 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:09,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2790 Valid, 6658 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 18:27:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2022-11-25 18:27:09,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4127. [2022-11-25 18:27:09,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4127 states, 2764 states have (on average 1.2926917510853835) internal successors, (3573), 2850 states have internal predecessors, (3573), 1131 states have call successors, (1131), 232 states have call predecessors, (1131), 231 states have return successors, (1130), 1101 states have call predecessors, (1130), 1130 states have call successors, (1130) [2022-11-25 18:27:10,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 5834 transitions. [2022-11-25 18:27:10,006 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 5834 transitions. Word has length 205 [2022-11-25 18:27:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:10,007 INFO L495 AbstractCegarLoop]: Abstraction has 4127 states and 5834 transitions. [2022-11-25 18:27:10,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 18:27:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 5834 transitions. [2022-11-25 18:27:10,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-11-25 18:27:10,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:10,030 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:10,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:10,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:10,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:10,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:10,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1079746045, now seen corresponding path program 1 times [2022-11-25 18:27:10,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:10,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873373855] [2022-11-25 18:27:10,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:10,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:10,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873373855] [2022-11-25 18:27:10,664 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:27:10,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157272716] [2022-11-25 18:27:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:10,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:10,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:10,666 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:10,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:27:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:12,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 4473 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:27:12,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-11-25 18:27:12,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:12,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157272716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:12,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:12,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:27:12,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972532230] [2022-11-25 18:27:12,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:12,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:12,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:12,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:12,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:12,699 INFO L87 Difference]: Start difference. First operand 4127 states and 5834 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-25 18:27:12,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:12,925 INFO L93 Difference]: Finished difference Result 8253 states and 11679 transitions. [2022-11-25 18:27:12,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:12,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 396 [2022-11-25 18:27:12,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:12,960 INFO L225 Difference]: With dead ends: 8253 [2022-11-25 18:27:12,961 INFO L226 Difference]: Without dead ends: 4153 [2022-11-25 18:27:12,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:12,988 INFO L413 NwaCegarLoop]: 3169 mSDtfsCounter, 11 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 6332 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:12,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 6332 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:12,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4153 states. [2022-11-25 18:27:13,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4153 to 4129. [2022-11-25 18:27:13,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4129 states, 2766 states have (on average 1.292480115690528) internal successors, (3575), 2852 states have internal predecessors, (3575), 1131 states have call successors, (1131), 232 states have call predecessors, (1131), 231 states have return successors, (1130), 1101 states have call predecessors, (1130), 1130 states have call successors, (1130) [2022-11-25 18:27:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4129 states to 4129 states and 5836 transitions. [2022-11-25 18:27:13,226 INFO L78 Accepts]: Start accepts. Automaton has 4129 states and 5836 transitions. Word has length 396 [2022-11-25 18:27:13,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:13,227 INFO L495 AbstractCegarLoop]: Abstraction has 4129 states and 5836 transitions. [2022-11-25 18:27:13,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-25 18:27:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4129 states and 5836 transitions. [2022-11-25 18:27:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-25 18:27:13,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:13,247 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:13,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:13,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:13,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:13,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:13,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1044062109, now seen corresponding path program 1 times [2022-11-25 18:27:13,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:13,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516589273] [2022-11-25 18:27:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:13,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:13,688 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:27:13,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028496783] [2022-11-25 18:27:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:13,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:13,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:13,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:13,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:27:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:15,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 4198 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:27:15,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-25 18:27:15,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:15,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:15,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516589273] [2022-11-25 18:27:15,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:27:15,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028496783] [2022-11-25 18:27:15,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028496783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:15,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:15,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:27:15,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876217129] [2022-11-25 18:27:15,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:15,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:15,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:15,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:15,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:15,682 INFO L87 Difference]: Start difference. First operand 4129 states and 5836 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-25 18:27:15,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:15,916 INFO L93 Difference]: Finished difference Result 8239 states and 11690 transitions. [2022-11-25 18:27:15,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:15,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 326 [2022-11-25 18:27:15,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:15,958 INFO L225 Difference]: With dead ends: 8239 [2022-11-25 18:27:15,959 INFO L226 Difference]: Without dead ends: 4137 [2022-11-25 18:27:15,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:15,988 INFO L413 NwaCegarLoop]: 3168 mSDtfsCounter, 2 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:15,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6333 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:15,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2022-11-25 18:27:16,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 4131. [2022-11-25 18:27:16,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4131 states, 2768 states have (on average 1.2922687861271676) internal successors, (3577), 2854 states have internal predecessors, (3577), 1131 states have call successors, (1131), 232 states have call predecessors, (1131), 231 states have return successors, (1130), 1101 states have call predecessors, (1130), 1130 states have call successors, (1130) [2022-11-25 18:27:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4131 states to 4131 states and 5838 transitions. [2022-11-25 18:27:16,204 INFO L78 Accepts]: Start accepts. Automaton has 4131 states and 5838 transitions. Word has length 326 [2022-11-25 18:27:16,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:16,205 INFO L495 AbstractCegarLoop]: Abstraction has 4131 states and 5838 transitions. [2022-11-25 18:27:16,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-25 18:27:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4131 states and 5838 transitions. [2022-11-25 18:27:16,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-11-25 18:27:16,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:16,224 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:16,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:16,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-25 18:27:16,441 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:16,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:16,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1504282175, now seen corresponding path program 1 times [2022-11-25 18:27:16,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:16,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751405891] [2022-11-25 18:27:16,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:16,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:16,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:27:16,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109972070] [2022-11-25 18:27:16,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:16,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:16,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:16,661 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:16,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:27:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:18,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 4236 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:27:18,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2022-11-25 18:27:18,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:18,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:18,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751405891] [2022-11-25 18:27:18,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:27:18,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109972070] [2022-11-25 18:27:18,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109972070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:18,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:18,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:27:18,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601148654] [2022-11-25 18:27:18,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:18,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:27:18,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:18,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:27:18,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:27:18,674 INFO L87 Difference]: Start difference. First operand 4131 states and 5838 transitions. Second operand has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 5 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (39), 4 states have call predecessors, (39), 5 states have call successors, (39) [2022-11-25 18:27:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:19,290 INFO L93 Difference]: Finished difference Result 8317 states and 11793 transitions. [2022-11-25 18:27:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:27:19,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 5 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (39), 4 states have call predecessors, (39), 5 states have call successors, (39) Word has length 333 [2022-11-25 18:27:19,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:19,333 INFO L225 Difference]: With dead ends: 8317 [2022-11-25 18:27:19,333 INFO L226 Difference]: Without dead ends: 4213 [2022-11-25 18:27:19,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:27:19,367 INFO L413 NwaCegarLoop]: 3176 mSDtfsCounter, 101 mSDsluCounter, 12541 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 15717 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:19,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 15717 Invalid, 102 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:27:19,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2022-11-25 18:27:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 4213. [2022-11-25 18:27:19,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4213 states, 2816 states have (on average 1.2908380681818181) internal successors, (3635), 2902 states have internal predecessors, (3635), 1161 states have call successors, (1161), 234 states have call predecessors, (1161), 235 states have return successors, (1162), 1131 states have call predecessors, (1162), 1160 states have call successors, (1162) [2022-11-25 18:27:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4213 states to 4213 states and 5958 transitions. [2022-11-25 18:27:19,661 INFO L78 Accepts]: Start accepts. Automaton has 4213 states and 5958 transitions. Word has length 333 [2022-11-25 18:27:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:19,663 INFO L495 AbstractCegarLoop]: Abstraction has 4213 states and 5958 transitions. [2022-11-25 18:27:19,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 5 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (39), 4 states have call predecessors, (39), 5 states have call successors, (39) [2022-11-25 18:27:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states and 5958 transitions. [2022-11-25 18:27:19,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-11-25 18:27:19,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:19,689 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:19,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:19,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:19,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash -468061034, now seen corresponding path program 1 times [2022-11-25 18:27:19,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:19,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706945566] [2022-11-25 18:27:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:19,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:20,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:20,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706945566] [2022-11-25 18:27:20,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:27:20,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420942910] [2022-11-25 18:27:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:20,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:20,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:20,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:20,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:27:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:22,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 4520 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:27:22,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-11-25 18:27:22,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:27:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-11-25 18:27:22,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420942910] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:27:22,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:27:22,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-25 18:27:22,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363127393] [2022-11-25 18:27:22,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:27:22,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:27:22,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:22,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:27:22,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:27:22,894 INFO L87 Difference]: Start difference. First operand 4213 states and 5958 transitions. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-25 18:27:23,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:23,247 INFO L93 Difference]: Finished difference Result 8477 states and 12003 transitions. [2022-11-25 18:27:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:27:23,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 405 [2022-11-25 18:27:23,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:23,298 INFO L225 Difference]: With dead ends: 8477 [2022-11-25 18:27:23,299 INFO L226 Difference]: Without dead ends: 4291 [2022-11-25 18:27:23,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 804 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:27:23,327 INFO L413 NwaCegarLoop]: 3175 mSDtfsCounter, 45 mSDsluCounter, 9484 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 12659 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:23,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 12659 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:23,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2022-11-25 18:27:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 4291. [2022-11-25 18:27:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4291 states, 2876 states have (on average 1.28894297635605) internal successors, (3707), 2962 states have internal predecessors, (3707), 1179 states have call successors, (1179), 234 states have call predecessors, (1179), 235 states have return successors, (1180), 1149 states have call predecessors, (1180), 1178 states have call successors, (1180) [2022-11-25 18:27:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4291 states to 4291 states and 6066 transitions. [2022-11-25 18:27:23,587 INFO L78 Accepts]: Start accepts. Automaton has 4291 states and 6066 transitions. Word has length 405 [2022-11-25 18:27:23,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:23,588 INFO L495 AbstractCegarLoop]: Abstraction has 4291 states and 6066 transitions. [2022-11-25 18:27:23,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-25 18:27:23,588 INFO L276 IsEmpty]: Start isEmpty. Operand 4291 states and 6066 transitions. [2022-11-25 18:27:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-25 18:27:23,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:23,615 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:23,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:23,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:23,829 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:23,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:23,830 INFO L85 PathProgramCache]: Analyzing trace with hash 221103957, now seen corresponding path program 1 times [2022-11-25 18:27:23,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:23,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563343679] [2022-11-25 18:27:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:23,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:24,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:24,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563343679] [2022-11-25 18:27:24,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:27:24,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928743846] [2022-11-25 18:27:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:24,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:24,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:24,221 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:24,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:27:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:26,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 4692 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:27:26,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-11-25 18:27:26,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:27:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-25 18:27:26,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928743846] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:27:26,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:27:26,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-25 18:27:26,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910342512] [2022-11-25 18:27:26,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:27:26,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:27:26,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:26,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:27:26,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:27:26,873 INFO L87 Difference]: Start difference. First operand 4291 states and 6066 transitions. Second operand has 12 states, 12 states have (on average 25.833333333333332) internal successors, (310), 12 states have internal predecessors, (310), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2022-11-25 18:27:27,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:27,425 INFO L93 Difference]: Finished difference Result 8711 states and 12333 transitions. [2022-11-25 18:27:27,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:27:27,426 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 25.833333333333332) internal successors, (310), 12 states have internal predecessors, (310), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 447 [2022-11-25 18:27:27,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:27,459 INFO L225 Difference]: With dead ends: 8711 [2022-11-25 18:27:27,459 INFO L226 Difference]: Without dead ends: 4447 [2022-11-25 18:27:27,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:27:27,481 INFO L413 NwaCegarLoop]: 3193 mSDtfsCounter, 116 mSDsluCounter, 15881 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 19074 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:27,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 19074 Invalid, 139 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:27:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2022-11-25 18:27:27,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 4447. [2022-11-25 18:27:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4447 states, 2996 states have (on average 1.2853805073431241) internal successors, (3851), 3082 states have internal predecessors, (3851), 1215 states have call successors, (1215), 234 states have call predecessors, (1215), 235 states have return successors, (1216), 1185 states have call predecessors, (1216), 1214 states have call successors, (1216) [2022-11-25 18:27:27,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4447 states to 4447 states and 6282 transitions. [2022-11-25 18:27:27,699 INFO L78 Accepts]: Start accepts. Automaton has 4447 states and 6282 transitions. Word has length 447 [2022-11-25 18:27:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:27,700 INFO L495 AbstractCegarLoop]: Abstraction has 4447 states and 6282 transitions. [2022-11-25 18:27:27,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.833333333333332) internal successors, (310), 12 states have internal predecessors, (310), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2022-11-25 18:27:27,700 INFO L276 IsEmpty]: Start isEmpty. Operand 4447 states and 6282 transitions. [2022-11-25 18:27:27,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2022-11-25 18:27:27,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:27,720 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:27,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:27,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:27,938 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:27,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:27,939 INFO L85 PathProgramCache]: Analyzing trace with hash 892637637, now seen corresponding path program 2 times [2022-11-25 18:27:27,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:27,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928814301] [2022-11-25 18:27:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:27,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:28,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:28,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928814301] [2022-11-25 18:27:28,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:27:28,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422753786] [2022-11-25 18:27:28,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:27:28,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:28,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:28,331 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:28,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 18:27:29,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:27:29,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:27:29,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:27:29,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2022-11-25 18:27:29,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:29,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422753786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:29,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:29,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:27:29,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896882267] [2022-11-25 18:27:29,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:29,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:27:29,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:29,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:27:29,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:27:29,944 INFO L87 Difference]: Start difference. First operand 4447 states and 6282 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2022-11-25 18:27:30,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:30,778 INFO L93 Difference]: Finished difference Result 9387 states and 13370 transitions. [2022-11-25 18:27:30,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:27:30,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 471 [2022-11-25 18:27:30,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:30,813 INFO L225 Difference]: With dead ends: 9387 [2022-11-25 18:27:30,813 INFO L226 Difference]: Without dead ends: 4967 [2022-11-25 18:27:30,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:27:30,835 INFO L413 NwaCegarLoop]: 3565 mSDtfsCounter, 377 mSDsluCounter, 6542 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 10107 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:30,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 10107 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 18:27:30,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4967 states. [2022-11-25 18:27:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4967 to 4451. [2022-11-25 18:27:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 3000 states have (on average 1.285) internal successors, (3855), 3086 states have internal predecessors, (3855), 1215 states have call successors, (1215), 234 states have call predecessors, (1215), 235 states have return successors, (1216), 1185 states have call predecessors, (1216), 1214 states have call successors, (1216) [2022-11-25 18:27:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 6286 transitions. [2022-11-25 18:27:31,089 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 6286 transitions. Word has length 471 [2022-11-25 18:27:31,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:31,092 INFO L495 AbstractCegarLoop]: Abstraction has 4451 states and 6286 transitions. [2022-11-25 18:27:31,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2022-11-25 18:27:31,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 6286 transitions. [2022-11-25 18:27:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-25 18:27:31,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:31,112 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:31,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:31,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:31,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:31,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:31,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1728941518, now seen corresponding path program 1 times [2022-11-25 18:27:31,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:31,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036280764] [2022-11-25 18:27:31,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:31,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:31,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:31,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036280764] [2022-11-25 18:27:31,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:27:31,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281035221] [2022-11-25 18:27:31,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:31,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:31,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:31,663 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:31,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 18:27:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:33,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 4693 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 18:27:33,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 24 proven. 190 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2022-11-25 18:27:33,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:27:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-11-25 18:27:34,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281035221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:27:34,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:27:34,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-25 18:27:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604739656] [2022-11-25 18:27:34,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:27:34,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 18:27:34,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:34,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 18:27:34,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:27:34,541 INFO L87 Difference]: Start difference. First operand 4451 states and 6286 transitions. Second operand has 24 states, 24 states have (on average 14.291666666666666) internal successors, (343), 24 states have internal predecessors, (343), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2022-11-25 18:27:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:35,363 INFO L93 Difference]: Finished difference Result 9187 states and 13001 transitions. [2022-11-25 18:27:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 18:27:35,365 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.291666666666666) internal successors, (343), 24 states have internal predecessors, (343), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) Word has length 447 [2022-11-25 18:27:35,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:35,407 INFO L225 Difference]: With dead ends: 9187 [2022-11-25 18:27:35,407 INFO L226 Difference]: Without dead ends: 4763 [2022-11-25 18:27:35,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:27:35,438 INFO L413 NwaCegarLoop]: 3229 mSDtfsCounter, 307 mSDsluCounter, 9715 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 12944 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:35,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 12944 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 18:27:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4763 states. [2022-11-25 18:27:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4763 to 4763. [2022-11-25 18:27:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4763 states, 3240 states have (on average 1.2787037037037037) internal successors, (4143), 3326 states have internal predecessors, (4143), 1287 states have call successors, (1287), 234 states have call predecessors, (1287), 235 states have return successors, (1288), 1257 states have call predecessors, (1288), 1286 states have call successors, (1288) [2022-11-25 18:27:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 6718 transitions. [2022-11-25 18:27:35,747 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 6718 transitions. Word has length 447 [2022-11-25 18:27:35,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:35,748 INFO L495 AbstractCegarLoop]: Abstraction has 4763 states and 6718 transitions. [2022-11-25 18:27:35,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.291666666666666) internal successors, (343), 24 states have internal predecessors, (343), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2022-11-25 18:27:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 6718 transitions. [2022-11-25 18:27:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-11-25 18:27:35,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:35,774 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:35,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:35,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:35,993 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:35,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:35,993 INFO L85 PathProgramCache]: Analyzing trace with hash 278583260, now seen corresponding path program 1 times [2022-11-25 18:27:35,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:35,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316054305] [2022-11-25 18:27:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:35,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:36,210 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:27:36,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907116519] [2022-11-25 18:27:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:36,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:36,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:36,212 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:36,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 18:27:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:38,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 4440 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:27:38,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-11-25 18:27:38,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:38,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:38,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316054305] [2022-11-25 18:27:38,150 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:27:38,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907116519] [2022-11-25 18:27:38,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907116519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:38,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:38,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:27:38,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333912102] [2022-11-25 18:27:38,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:38,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:27:38,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:38,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:27:38,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:27:38,156 INFO L87 Difference]: Start difference. First operand 4763 states and 6718 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-25 18:27:38,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:38,456 INFO L93 Difference]: Finished difference Result 9609 states and 13616 transitions. [2022-11-25 18:27:38,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:27:38,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) Word has length 372 [2022-11-25 18:27:38,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:38,488 INFO L225 Difference]: With dead ends: 9609 [2022-11-25 18:27:38,488 INFO L226 Difference]: Without dead ends: 4873 [2022-11-25 18:27:38,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:27:38,516 INFO L413 NwaCegarLoop]: 3212 mSDtfsCounter, 42 mSDsluCounter, 9595 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 12807 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:38,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 12807 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:38,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2022-11-25 18:27:38,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 4771. [2022-11-25 18:27:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4771 states, 3246 states have (on average 1.27818853974122) internal successors, (4149), 3332 states have internal predecessors, (4149), 1287 states have call successors, (1287), 234 states have call predecessors, (1287), 237 states have return successors, (1292), 1259 states have call predecessors, (1292), 1286 states have call successors, (1292) [2022-11-25 18:27:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4771 states to 4771 states and 6728 transitions. [2022-11-25 18:27:38,838 INFO L78 Accepts]: Start accepts. Automaton has 4771 states and 6728 transitions. Word has length 372 [2022-11-25 18:27:38,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:38,839 INFO L495 AbstractCegarLoop]: Abstraction has 4771 states and 6728 transitions. [2022-11-25 18:27:38,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-25 18:27:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4771 states and 6728 transitions. [2022-11-25 18:27:38,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-11-25 18:27:38,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:38,857 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:38,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:39,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 18:27:39,076 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:39,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:39,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1053817431, now seen corresponding path program 1 times [2022-11-25 18:27:39,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:39,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822604578] [2022-11-25 18:27:39,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:39,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:39,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:27:39,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185262356] [2022-11-25 18:27:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:39,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:39,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:39,254 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:39,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 18:27:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:41,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 4460 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:27:41,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-11-25 18:27:41,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:41,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:41,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822604578] [2022-11-25 18:27:41,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:27:41,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185262356] [2022-11-25 18:27:41,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185262356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:41,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:41,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:27:41,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974308978] [2022-11-25 18:27:41,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:41,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:27:41,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:41,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:27:41,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:27:41,200 INFO L87 Difference]: Start difference. First operand 4771 states and 6728 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 3 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2022-11-25 18:27:41,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:41,464 INFO L93 Difference]: Finished difference Result 9557 states and 13530 transitions. [2022-11-25 18:27:41,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:27:41,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 3 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 382 [2022-11-25 18:27:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:41,494 INFO L225 Difference]: With dead ends: 9557 [2022-11-25 18:27:41,494 INFO L226 Difference]: Without dead ends: 4813 [2022-11-25 18:27:41,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:27:41,520 INFO L413 NwaCegarLoop]: 3173 mSDtfsCounter, 9 mSDsluCounter, 6330 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9503 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:41,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 9503 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:41,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2022-11-25 18:27:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 4789. [2022-11-25 18:27:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 3258 states have (on average 1.2777777777777777) internal successors, (4163), 3344 states have internal predecessors, (4163), 1293 states have call successors, (1293), 234 states have call predecessors, (1293), 237 states have return successors, (1298), 1265 states have call predecessors, (1298), 1292 states have call successors, (1298) [2022-11-25 18:27:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 6754 transitions. [2022-11-25 18:27:41,761 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 6754 transitions. Word has length 382 [2022-11-25 18:27:41,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:41,762 INFO L495 AbstractCegarLoop]: Abstraction has 4789 states and 6754 transitions. [2022-11-25 18:27:41,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 3 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2022-11-25 18:27:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 6754 transitions. [2022-11-25 18:27:41,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-25 18:27:41,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:41,780 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:41,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:41,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:41,995 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:41,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:41,996 INFO L85 PathProgramCache]: Analyzing trace with hash -236179986, now seen corresponding path program 1 times [2022-11-25 18:27:41,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:41,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698491357] [2022-11-25 18:27:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:41,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:42,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:27:42,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511446006] [2022-11-25 18:27:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:42,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:42,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:42,183 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:42,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 18:27:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:44,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 4542 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:27:44,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-25 18:27:44,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:27:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2022-11-25 18:27:44,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:44,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698491357] [2022-11-25 18:27:44,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:27:44,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511446006] [2022-11-25 18:27:44,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511446006] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:27:44,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:27:44,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-25 18:27:44,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852223858] [2022-11-25 18:27:44,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:27:44,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:27:44,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:44,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:27:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:27:44,631 INFO L87 Difference]: Start difference. First operand 4789 states and 6754 transitions. Second operand has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 6 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (71), 6 states have call predecessors, (71), 6 states have call successors, (71) [2022-11-25 18:27:44,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:44,957 INFO L93 Difference]: Finished difference Result 9643 states and 13660 transitions. [2022-11-25 18:27:44,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:27:44,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 6 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (71), 6 states have call predecessors, (71), 6 states have call successors, (71) Word has length 404 [2022-11-25 18:27:44,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:44,991 INFO L225 Difference]: With dead ends: 9643 [2022-11-25 18:27:44,991 INFO L226 Difference]: Without dead ends: 4881 [2022-11-25 18:27:45,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 800 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:27:45,017 INFO L413 NwaCegarLoop]: 3182 mSDtfsCounter, 32 mSDsluCounter, 9499 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 12681 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:45,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 12681 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:27:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4881 states. [2022-11-25 18:27:45,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4881 to 4861. [2022-11-25 18:27:45,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4861 states, 3306 states have (on average 1.2761645493042952) internal successors, (4219), 3392 states have internal predecessors, (4219), 1317 states have call successors, (1317), 234 states have call predecessors, (1317), 237 states have return successors, (1322), 1289 states have call predecessors, (1322), 1316 states have call successors, (1322) [2022-11-25 18:27:45,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4861 states to 4861 states and 6858 transitions. [2022-11-25 18:27:45,263 INFO L78 Accepts]: Start accepts. Automaton has 4861 states and 6858 transitions. Word has length 404 [2022-11-25 18:27:45,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:45,264 INFO L495 AbstractCegarLoop]: Abstraction has 4861 states and 6858 transitions. [2022-11-25 18:27:45,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 6 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (71), 6 states have call predecessors, (71), 6 states have call successors, (71) [2022-11-25 18:27:45,265 INFO L276 IsEmpty]: Start isEmpty. Operand 4861 states and 6858 transitions. [2022-11-25 18:27:45,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2022-11-25 18:27:45,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:45,286 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:45,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:45,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 18:27:45,502 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:45,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:45,502 INFO L85 PathProgramCache]: Analyzing trace with hash -872758565, now seen corresponding path program 1 times [2022-11-25 18:27:45,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:45,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010178762] [2022-11-25 18:27:45,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:45,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:45,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:45,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010178762] [2022-11-25 18:27:45,860 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:27:45,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186952886] [2022-11-25 18:27:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:45,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:45,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:45,864 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:45,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 18:27:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:48,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 4851 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 18:27:48,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 24 proven. 946 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2022-11-25 18:27:48,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:27:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-11-25 18:27:50,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186952886] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:27:50,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:27:50,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-11-25 18:27:50,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914942976] [2022-11-25 18:27:50,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:27:50,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-25 18:27:50,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:50,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-25 18:27:50,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 18:27:50,156 INFO L87 Difference]: Start difference. First operand 4861 states and 6858 transitions. Second operand has 48 states, 48 states have (on average 9.166666666666666) internal successors, (440), 48 states have internal predecessors, (440), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2022-11-25 18:27:51,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:51,648 INFO L93 Difference]: Finished difference Result 10319 states and 14601 transitions. [2022-11-25 18:27:51,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-25 18:27:51,649 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 9.166666666666666) internal successors, (440), 48 states have internal predecessors, (440), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) Word has length 496 [2022-11-25 18:27:51,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:51,683 INFO L225 Difference]: With dead ends: 10319 [2022-11-25 18:27:51,683 INFO L226 Difference]: Without dead ends: 5485 [2022-11-25 18:27:51,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 944 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 18:27:51,710 INFO L413 NwaCegarLoop]: 3301 mSDtfsCounter, 701 mSDsluCounter, 9990 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 13291 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:51,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 13291 Invalid, 966 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [377 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 18:27:51,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5485 states. [2022-11-25 18:27:51,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5485 to 5485. [2022-11-25 18:27:51,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 3786 states have (on average 1.2665081880612783) internal successors, (4795), 3872 states have internal predecessors, (4795), 1461 states have call successors, (1461), 234 states have call predecessors, (1461), 237 states have return successors, (1466), 1433 states have call predecessors, (1466), 1460 states have call successors, (1466) [2022-11-25 18:27:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 7722 transitions. [2022-11-25 18:27:51,987 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 7722 transitions. Word has length 496 [2022-11-25 18:27:51,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:51,988 INFO L495 AbstractCegarLoop]: Abstraction has 5485 states and 7722 transitions. [2022-11-25 18:27:51,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 9.166666666666666) internal successors, (440), 48 states have internal predecessors, (440), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2022-11-25 18:27:51,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 7722 transitions. [2022-11-25 18:27:52,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-25 18:27:52,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:52,008 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:52,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:52,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 18:27:52,229 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:52,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:52,230 INFO L85 PathProgramCache]: Analyzing trace with hash 470319383, now seen corresponding path program 1 times [2022-11-25 18:27:52,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:52,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943317363] [2022-11-25 18:27:52,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:52,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:52,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:52,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943317363] [2022-11-25 18:27:52,543 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:27:52,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777651736] [2022-11-25 18:27:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:52,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:52,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:52,548 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:52,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 18:27:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:54,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 4677 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:27:54,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-11-25 18:27:54,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:54,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777651736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:54,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:54,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:27:54,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038118946] [2022-11-25 18:27:54,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:54,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:54,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:54,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:54,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:54,723 INFO L87 Difference]: Start difference. First operand 5485 states and 7722 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 3 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-25 18:27:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:55,076 INFO L93 Difference]: Finished difference Result 11027 states and 15582 transitions. [2022-11-25 18:27:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:55,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 3 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 430 [2022-11-25 18:27:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:55,120 INFO L225 Difference]: With dead ends: 11027 [2022-11-25 18:27:55,120 INFO L226 Difference]: Without dead ends: 5569 [2022-11-25 18:27:55,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:55,156 INFO L413 NwaCegarLoop]: 3204 mSDtfsCounter, 25 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6368 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:55,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6368 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:55,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2022-11-25 18:27:55,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 5509. [2022-11-25 18:27:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5509 states, 3802 states have (on average 1.266964755391899) internal successors, (4817), 3890 states have internal predecessors, (4817), 1469 states have call successors, (1469), 234 states have call predecessors, (1469), 237 states have return successors, (1474), 1441 states have call predecessors, (1474), 1468 states have call successors, (1474) [2022-11-25 18:27:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5509 states to 5509 states and 7760 transitions. [2022-11-25 18:27:55,524 INFO L78 Accepts]: Start accepts. Automaton has 5509 states and 7760 transitions. Word has length 430 [2022-11-25 18:27:55,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:55,525 INFO L495 AbstractCegarLoop]: Abstraction has 5509 states and 7760 transitions. [2022-11-25 18:27:55,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 3 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-25 18:27:55,526 INFO L276 IsEmpty]: Start isEmpty. Operand 5509 states and 7760 transitions. [2022-11-25 18:27:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-25 18:27:55,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:55,543 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:55,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:55,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:55,763 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:55,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:55,764 INFO L85 PathProgramCache]: Analyzing trace with hash 856181785, now seen corresponding path program 1 times [2022-11-25 18:27:55,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:55,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973674095] [2022-11-25 18:27:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:55,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:56,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:56,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973674095] [2022-11-25 18:27:56,091 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:27:56,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825554415] [2022-11-25 18:27:56,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:56,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:56,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:56,093 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:56,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 18:27:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:58,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 4674 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:27:58,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-25 18:27:58,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:27:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-11-25 18:27:58,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825554415] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:27:58,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:27:58,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-25 18:27:58,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112099480] [2022-11-25 18:27:58,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:27:58,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:27:58,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:27:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:27:58,846 INFO L87 Difference]: Start difference. First operand 5509 states and 7760 transitions. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2022-11-25 18:27:59,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:59,092 INFO L93 Difference]: Finished difference Result 11015 states and 15570 transitions. [2022-11-25 18:27:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:27:59,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) Word has length 430 [2022-11-25 18:27:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:59,124 INFO L225 Difference]: With dead ends: 11015 [2022-11-25 18:27:59,124 INFO L226 Difference]: Without dead ends: 5533 [2022-11-25 18:27:59,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:27:59,152 INFO L413 NwaCegarLoop]: 3170 mSDtfsCounter, 4 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6336 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:59,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 6336 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2022-11-25 18:27:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 5533. [2022-11-25 18:27:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5533 states, 3820 states have (on average 1.2657068062827226) internal successors, (4835), 3908 states have internal predecessors, (4835), 1475 states have call successors, (1475), 234 states have call predecessors, (1475), 237 states have return successors, (1480), 1447 states have call predecessors, (1480), 1474 states have call successors, (1480) [2022-11-25 18:27:59,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5533 states to 5533 states and 7790 transitions. [2022-11-25 18:27:59,566 INFO L78 Accepts]: Start accepts. Automaton has 5533 states and 7790 transitions. Word has length 430 [2022-11-25 18:27:59,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:59,567 INFO L495 AbstractCegarLoop]: Abstraction has 5533 states and 7790 transitions. [2022-11-25 18:27:59,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2022-11-25 18:27:59,568 INFO L276 IsEmpty]: Start isEmpty. Operand 5533 states and 7790 transitions. [2022-11-25 18:27:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-11-25 18:27:59,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:59,583 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:59,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:59,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:59,800 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:59,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:59,801 INFO L85 PathProgramCache]: Analyzing trace with hash 158752915, now seen corresponding path program 2 times [2022-11-25 18:27:59,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:59,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72973621] [2022-11-25 18:27:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:59,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:00,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:00,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72973621] [2022-11-25 18:28:00,103 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:28:00,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052160799] [2022-11-25 18:28:00,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:28:00,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:28:00,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:28:00,108 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:28:00,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 18:28:01,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:28:01,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:28:01,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:28:01,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:28:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-11-25 18:28:01,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:28:01,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052160799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:01,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:01,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:28:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294165513] [2022-11-25 18:28:01,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:01,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:01,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:01,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:01,943 INFO L87 Difference]: Start difference. First operand 5533 states and 7790 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-25 18:28:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:28:02,466 INFO L93 Difference]: Finished difference Result 16499 states and 23281 transitions. [2022-11-25 18:28:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:28:02,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 451 [2022-11-25 18:28:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:28:02,542 INFO L225 Difference]: With dead ends: 16499 [2022-11-25 18:28:02,542 INFO L226 Difference]: Without dead ends: 10993 [2022-11-25 18:28:02,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:02,578 INFO L413 NwaCegarLoop]: 3785 mSDtfsCounter, 3117 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3117 SdHoareTripleChecker+Valid, 6918 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:28:02,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3117 Valid, 6918 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:28:02,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10993 states. [2022-11-25 18:28:03,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10993 to 10990. [2022-11-25 18:28:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10990 states, 7586 states have (on average 1.2660163459003428) internal successors, (9604), 7767 states have internal predecessors, (9604), 2935 states have call successors, (2935), 466 states have call predecessors, (2935), 468 states have return successors, (2954), 2870 states have call predecessors, (2954), 2934 states have call successors, (2954) [2022-11-25 18:28:03,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10990 states to 10990 states and 15493 transitions. [2022-11-25 18:28:03,180 INFO L78 Accepts]: Start accepts. Automaton has 10990 states and 15493 transitions. Word has length 451 [2022-11-25 18:28:03,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:28:03,181 INFO L495 AbstractCegarLoop]: Abstraction has 10990 states and 15493 transitions. [2022-11-25 18:28:03,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-25 18:28:03,181 INFO L276 IsEmpty]: Start isEmpty. Operand 10990 states and 15493 transitions. [2022-11-25 18:28:03,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2022-11-25 18:28:03,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:28:03,214 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:03,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-25 18:28:03,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 18:28:03,428 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:28:03,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:03,429 INFO L85 PathProgramCache]: Analyzing trace with hash -823277907, now seen corresponding path program 1 times [2022-11-25 18:28:03,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:03,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488437316] [2022-11-25 18:28:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:03,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:03,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:03,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488437316] [2022-11-25 18:28:03,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:28:03,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278535256] [2022-11-25 18:28:03,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:03,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:28:03,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:28:03,941 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:28:03,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-25 18:28:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:06,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 4790 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:28:06,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:28:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2022-11-25 18:28:06,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:28:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-11-25 18:28:06,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278535256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:28:06,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:28:06,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-25 18:28:06,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235490501] [2022-11-25 18:28:06,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:28:06,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:28:06,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:06,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:28:06,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:28:06,826 INFO L87 Difference]: Start difference. First operand 10990 states and 15493 transitions. Second operand has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 10 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (73), 10 states have call predecessors, (73), 10 states have call successors, (73) [2022-11-25 18:28:07,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:28:07,244 INFO L93 Difference]: Finished difference Result 22049 states and 31190 transitions. [2022-11-25 18:28:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:28:07,244 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 10 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (73), 10 states have call predecessors, (73), 10 states have call successors, (73) Word has length 452 [2022-11-25 18:28:07,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:28:07,313 INFO L225 Difference]: With dead ends: 22049 [2022-11-25 18:28:07,313 INFO L226 Difference]: Without dead ends: 11086 [2022-11-25 18:28:07,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 892 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:28:07,373 INFO L413 NwaCegarLoop]: 3176 mSDtfsCounter, 4 mSDsluCounter, 9498 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12674 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:28:07,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 12674 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:28:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11086 states. [2022-11-25 18:28:08,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11086 to 11086. [2022-11-25 18:28:08,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11086 states, 7658 states have (on average 1.2635152781405066) internal successors, (9676), 7839 states have internal predecessors, (9676), 2959 states have call successors, (2959), 466 states have call predecessors, (2959), 468 states have return successors, (2978), 2894 states have call predecessors, (2978), 2958 states have call successors, (2978) [2022-11-25 18:28:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11086 states to 11086 states and 15613 transitions. [2022-11-25 18:28:08,103 INFO L78 Accepts]: Start accepts. Automaton has 11086 states and 15613 transitions. Word has length 452 [2022-11-25 18:28:08,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:28:08,103 INFO L495 AbstractCegarLoop]: Abstraction has 11086 states and 15613 transitions. [2022-11-25 18:28:08,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 10 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (73), 10 states have call predecessors, (73), 10 states have call successors, (73) [2022-11-25 18:28:08,104 INFO L276 IsEmpty]: Start isEmpty. Operand 11086 states and 15613 transitions. [2022-11-25 18:28:08,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-11-25 18:28:08,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:28:08,135 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:08,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-25 18:28:08,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 18:28:08,348 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:28:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:08,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1482210797, now seen corresponding path program 2 times [2022-11-25 18:28:08,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:08,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226948310] [2022-11-25 18:28:08,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:08,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:08,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:08,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226948310] [2022-11-25 18:28:08,724 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:28:08,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055112581] [2022-11-25 18:28:08,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:28:08,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:28:08,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:28:08,726 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:28:08,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-25 18:28:10,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:28:10,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:28:10,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 2547 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:28:10,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:28:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2022-11-25 18:28:10,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:28:10,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055112581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:10,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:10,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:28:10,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396456005] [2022-11-25 18:28:10,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:10,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:10,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:10,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:10,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:10,527 INFO L87 Difference]: Start difference. First operand 11086 states and 15613 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-25 18:28:11,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:28:11,393 INFO L93 Difference]: Finished difference Result 27683 states and 39030 transitions. [2022-11-25 18:28:11,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:28:11,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 494 [2022-11-25 18:28:11,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:28:11,505 INFO L225 Difference]: With dead ends: 27683 [2022-11-25 18:28:11,505 INFO L226 Difference]: Without dead ends: 16624 [2022-11-25 18:28:11,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:11,588 INFO L413 NwaCegarLoop]: 3767 mSDtfsCounter, 3143 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3143 SdHoareTripleChecker+Valid, 6900 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:28:11,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3143 Valid, 6900 Invalid, 22 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:28:11,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16624 states. [2022-11-25 18:28:12,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16624 to 16621. [2022-11-25 18:28:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16621 states, 11486 states have (on average 1.2628417203552151) internal successors, (14505), 11755 states have internal predecessors, (14505), 4430 states have call successors, (4430), 698 states have call predecessors, (4430), 704 states have return successors, (4473), 4338 states have call predecessors, (4473), 4429 states have call successors, (4473) [2022-11-25 18:28:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16621 states to 16621 states and 23408 transitions. [2022-11-25 18:28:12,865 INFO L78 Accepts]: Start accepts. Automaton has 16621 states and 23408 transitions. Word has length 494 [2022-11-25 18:28:12,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:28:12,865 INFO L495 AbstractCegarLoop]: Abstraction has 16621 states and 23408 transitions. [2022-11-25 18:28:12,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-25 18:28:12,866 INFO L276 IsEmpty]: Start isEmpty. Operand 16621 states and 23408 transitions. [2022-11-25 18:28:12,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-11-25 18:28:12,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:28:12,918 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:12,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-25 18:28:13,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 18:28:13,136 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:28:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:13,137 INFO L85 PathProgramCache]: Analyzing trace with hash -893741014, now seen corresponding path program 1 times [2022-11-25 18:28:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:13,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709185501] [2022-11-25 18:28:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:13,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:13,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:13,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709185501] [2022-11-25 18:28:13,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:28:13,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947017430] [2022-11-25 18:28:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:13,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:28:13,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:28:13,517 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:28:13,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-25 18:28:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:15,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 5020 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 18:28:15,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:28:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 9 proven. 190 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-11-25 18:28:16,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:28:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-25 18:28:17,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947017430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:28:17,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:28:17,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-25 18:28:17,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184506270] [2022-11-25 18:28:17,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:28:17,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 18:28:17,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:17,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 18:28:17,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:28:17,073 INFO L87 Difference]: Start difference. First operand 16621 states and 23408 transitions. Second operand has 24 states, 24 states have (on average 10.958333333333334) internal successors, (263), 24 states have internal predecessors, (263), 22 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (85), 22 states have call predecessors, (85), 22 states have call successors, (85) [2022-11-25 18:28:18,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:28:18,562 INFO L93 Difference]: Finished difference Result 33503 states and 47351 transitions. [2022-11-25 18:28:18,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 18:28:18,562 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.958333333333334) internal successors, (263), 24 states have internal predecessors, (263), 22 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (85), 22 states have call predecessors, (85), 22 states have call successors, (85) Word has length 495 [2022-11-25 18:28:18,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:28:18,674 INFO L225 Difference]: With dead ends: 33503 [2022-11-25 18:28:18,674 INFO L226 Difference]: Without dead ends: 16909 [2022-11-25 18:28:18,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 966 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:28:18,865 INFO L413 NwaCegarLoop]: 3188 mSDtfsCounter, 4 mSDsluCounter, 15836 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19024 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:28:18,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 19024 Invalid, 133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:28:18,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16909 states. [2022-11-25 18:28:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16909 to 16909. [2022-11-25 18:28:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16909 states, 11702 states have (on average 1.2579900871645873) internal successors, (14721), 11971 states have internal predecessors, (14721), 4502 states have call successors, (4502), 698 states have call predecessors, (4502), 704 states have return successors, (4545), 4410 states have call predecessors, (4545), 4501 states have call successors, (4545) [2022-11-25 18:28:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16909 states to 16909 states and 23768 transitions. [2022-11-25 18:28:19,772 INFO L78 Accepts]: Start accepts. Automaton has 16909 states and 23768 transitions. Word has length 495 [2022-11-25 18:28:19,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:28:19,773 INFO L495 AbstractCegarLoop]: Abstraction has 16909 states and 23768 transitions. [2022-11-25 18:28:19,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.958333333333334) internal successors, (263), 24 states have internal predecessors, (263), 22 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (85), 22 states have call predecessors, (85), 22 states have call successors, (85) [2022-11-25 18:28:19,773 INFO L276 IsEmpty]: Start isEmpty. Operand 16909 states and 23768 transitions. [2022-11-25 18:28:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2022-11-25 18:28:19,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:28:19,828 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:19,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-25 18:28:20,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:28:20,055 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:28:20,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:20,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2128712150, now seen corresponding path program 2 times [2022-11-25 18:28:20,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:20,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158692827] [2022-11-25 18:28:20,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:20,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:20,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:20,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158692827] [2022-11-25 18:28:20,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:28:20,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966241253] [2022-11-25 18:28:20,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:28:20,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:28:20,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:28:20,462 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:28:20,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-25 18:28:22,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:28:22,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:28:22,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:28:22,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:28:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1990 trivial. 0 not checked. [2022-11-25 18:28:22,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:28:22,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966241253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:22,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:22,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:28:22,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646630305] [2022-11-25 18:28:22,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:22,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:28:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:22,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:28:22,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:28:22,584 INFO L87 Difference]: Start difference. First operand 16909 states and 23768 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-25 18:28:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:28:29,697 INFO L93 Difference]: Finished difference Result 45113 states and 64332 transitions. [2022-11-25 18:28:29,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:28:29,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 579 [2022-11-25 18:28:29,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:28:29,819 INFO L225 Difference]: With dead ends: 45113 [2022-11-25 18:28:29,819 INFO L226 Difference]: Without dead ends: 28231 [2022-11-25 18:28:29,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:28:29,885 INFO L413 NwaCegarLoop]: 5130 mSDtfsCounter, 4761 mSDsluCounter, 7970 mSDsCounter, 0 mSdLazyCounter, 3713 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5068 SdHoareTripleChecker+Valid, 13100 SdHoareTripleChecker+Invalid, 3800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:28:29,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5068 Valid, 13100 Invalid, 3800 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 3713 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-25 18:28:29,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28231 states. [2022-11-25 18:28:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28231 to 22536. [2022-11-25 18:28:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22536 states, 15601 states have (on average 1.2575475931030062) internal successors, (19619), 15958 states have internal predecessors, (19619), 5994 states have call successors, (5994), 930 states have call predecessors, (5994), 940 states have return successors, (6061), 5875 states have call predecessors, (6061), 5993 states have call successors, (6061) [2022-11-25 18:28:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22536 states to 22536 states and 31674 transitions. [2022-11-25 18:28:31,522 INFO L78 Accepts]: Start accepts. Automaton has 22536 states and 31674 transitions. Word has length 579 [2022-11-25 18:28:31,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:28:31,522 INFO L495 AbstractCegarLoop]: Abstraction has 22536 states and 31674 transitions. [2022-11-25 18:28:31,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-25 18:28:31,523 INFO L276 IsEmpty]: Start isEmpty. Operand 22536 states and 31674 transitions. [2022-11-25 18:28:31,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2022-11-25 18:28:31,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:28:31,573 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:31,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-25 18:28:31,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:28:31,774 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:28:31,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:31,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1370920740, now seen corresponding path program 1 times [2022-11-25 18:28:31,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:31,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199742294] [2022-11-25 18:28:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:31,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:32,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:32,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199742294] [2022-11-25 18:28:32,160 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:28:32,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039771260] [2022-11-25 18:28:32,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:32,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:28:32,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:28:32,164 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:28:32,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-25 18:28:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:34,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 5478 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 18:28:34,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:28:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 9 proven. 946 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2022-11-25 18:28:35,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:28:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2022-11-25 18:28:36,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039771260] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:28:36,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:28:36,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-11-25 18:28:36,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907715767] [2022-11-25 18:28:36,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:28:36,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-25 18:28:36,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:36,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-25 18:28:36,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 18:28:36,776 INFO L87 Difference]: Start difference. First operand 22536 states and 31674 transitions. Second operand has 48 states, 48 states have (on average 7.0) internal successors, (336), 48 states have internal predecessors, (336), 46 states have call successors, (115), 2 states have call predecessors, (115), 2 states have return successors, (109), 46 states have call predecessors, (109), 46 states have call successors, (109) [2022-11-25 18:28:38,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:28:38,509 INFO L93 Difference]: Finished difference Result 45813 states and 64643 transitions. [2022-11-25 18:28:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-25 18:28:38,510 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 7.0) internal successors, (336), 48 states have internal predecessors, (336), 46 states have call successors, (115), 2 states have call predecessors, (115), 2 states have return successors, (109), 46 states have call predecessors, (109), 46 states have call successors, (109) Word has length 580 [2022-11-25 18:28:38,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:28:38,660 INFO L225 Difference]: With dead ends: 45813 [2022-11-25 18:28:38,661 INFO L226 Difference]: Without dead ends: 23304 [2022-11-25 18:28:38,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1158 GetRequests, 1112 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 18:28:38,893 INFO L413 NwaCegarLoop]: 3212 mSDtfsCounter, 4 mSDsluCounter, 19023 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 22235 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:28:38,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 22235 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 18:28:38,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23304 states. [2022-11-25 18:28:39,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23304 to 23304. [2022-11-25 18:28:39,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23304 states, 16177 states have (on average 1.2483773258329727) internal successors, (20195), 16534 states have internal predecessors, (20195), 6186 states have call successors, (6186), 930 states have call predecessors, (6186), 940 states have return successors, (6253), 6067 states have call predecessors, (6253), 6185 states have call successors, (6253) [2022-11-25 18:28:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23304 states to 23304 states and 32634 transitions. [2022-11-25 18:28:40,069 INFO L78 Accepts]: Start accepts. Automaton has 23304 states and 32634 transitions. Word has length 580 [2022-11-25 18:28:40,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:28:40,070 INFO L495 AbstractCegarLoop]: Abstraction has 23304 states and 32634 transitions. [2022-11-25 18:28:40,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.0) internal successors, (336), 48 states have internal predecessors, (336), 46 states have call successors, (115), 2 states have call predecessors, (115), 2 states have return successors, (109), 46 states have call predecessors, (109), 46 states have call successors, (109) [2022-11-25 18:28:40,070 INFO L276 IsEmpty]: Start isEmpty. Operand 23304 states and 32634 transitions. [2022-11-25 18:28:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2022-11-25 18:28:40,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:28:40,115 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:40,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-25 18:28:40,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:28:40,316 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:28:40,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:40,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2145520240, now seen corresponding path program 1 times [2022-11-25 18:28:40,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:40,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402966851] [2022-11-25 18:28:40,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:40,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:40,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:40,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402966851] [2022-11-25 18:28:40,621 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:28:40,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863575159] [2022-11-25 18:28:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:40,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:28:40,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:28:40,623 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:28:40,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-25 18:28:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:43,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 5961 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:28:43,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:28:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-11-25 18:28:43,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:28:43,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863575159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:43,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:43,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:28:43,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581987079] [2022-11-25 18:28:43,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:43,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:43,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:43,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:43,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:43,101 INFO L87 Difference]: Start difference. First operand 23304 states and 32634 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-25 18:28:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:28:45,137 INFO L93 Difference]: Finished difference Result 67684 states and 94872 transitions. [2022-11-25 18:28:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:28:45,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 524 [2022-11-25 18:28:45,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:28:45,327 INFO L225 Difference]: With dead ends: 67684 [2022-11-25 18:28:45,327 INFO L226 Difference]: Without dead ends: 44407 [2022-11-25 18:28:45,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:45,417 INFO L413 NwaCegarLoop]: 4484 mSDtfsCounter, 2703 mSDsluCounter, 3122 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 7606 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:28:45,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2703 Valid, 7606 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:28:45,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44407 states. [2022-11-25 18:28:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44407 to 44396. [2022-11-25 18:28:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44396 states, 30856 states have (on average 1.2492870106300233) internal successors, (38548), 31494 states have internal predecessors, (38548), 11778 states have call successors, (11778), 1740 states have call predecessors, (11778), 1761 states have return successors, (11913), 11585 states have call predecessors, (11913), 11777 states have call successors, (11913) [2022-11-25 18:28:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44396 states to 44396 states and 62239 transitions. [2022-11-25 18:28:47,510 INFO L78 Accepts]: Start accepts. Automaton has 44396 states and 62239 transitions. Word has length 524 [2022-11-25 18:28:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:28:47,510 INFO L495 AbstractCegarLoop]: Abstraction has 44396 states and 62239 transitions. [2022-11-25 18:28:47,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-25 18:28:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 44396 states and 62239 transitions. [2022-11-25 18:28:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-11-25 18:28:47,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:28:47,644 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:47,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-25 18:28:47,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-25 18:28:47,845 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:28:47,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:47,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1682401491, now seen corresponding path program 1 times [2022-11-25 18:28:47,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:47,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336068210] [2022-11-25 18:28:47,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:47,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:48,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:48,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336068210] [2022-11-25 18:28:48,235 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:28:48,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126052595] [2022-11-25 18:28:48,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:48,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:28:48,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:28:48,237 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:28:48,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-25 18:28:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:50,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 6137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:28:50,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:28:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2022-11-25 18:28:51,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:28:51,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126052595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:51,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:51,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:28:51,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114024918] [2022-11-25 18:28:51,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:51,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:51,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:51,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:51,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:51,068 INFO L87 Difference]: Start difference. First operand 44396 states and 62239 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 3 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2022-11-25 18:28:54,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:28:54,142 INFO L93 Difference]: Finished difference Result 110352 states and 154747 transitions. [2022-11-25 18:28:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:28:54,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 3 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) Word has length 559 [2022-11-25 18:28:54,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:28:54,654 INFO L225 Difference]: With dead ends: 110352 [2022-11-25 18:28:54,654 INFO L226 Difference]: Without dead ends: 65993 [2022-11-25 18:28:54,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:54,826 INFO L413 NwaCegarLoop]: 4220 mSDtfsCounter, 2841 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2841 SdHoareTripleChecker+Valid, 7133 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:28:54,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2841 Valid, 7133 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:28:54,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65993 states. [2022-11-25 18:28:57,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65993 to 65890. [2022-11-25 18:28:58,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65890 states, 45814 states have (on average 1.2490505085781638) internal successors, (57224), 46762 states have internal predecessors, (57224), 17460 states have call successors, (17460), 2584 states have call predecessors, (17460), 2615 states have return successors, (17659), 17167 states have call predecessors, (17659), 17459 states have call successors, (17659) [2022-11-25 18:28:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65890 states to 65890 states and 92343 transitions. [2022-11-25 18:28:58,382 INFO L78 Accepts]: Start accepts. Automaton has 65890 states and 92343 transitions. Word has length 559 [2022-11-25 18:28:58,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:28:58,383 INFO L495 AbstractCegarLoop]: Abstraction has 65890 states and 92343 transitions. [2022-11-25 18:28:58,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 3 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2022-11-25 18:28:58,383 INFO L276 IsEmpty]: Start isEmpty. Operand 65890 states and 92343 transitions. [2022-11-25 18:28:58,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-11-25 18:28:58,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:28:58,523 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:58,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-25 18:28:58,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:28:58,724 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:28:58,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:58,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1120741214, now seen corresponding path program 1 times [2022-11-25 18:28:58,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:58,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429329373] [2022-11-25 18:28:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:58,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:59,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:59,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429329373] [2022-11-25 18:28:59,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:28:59,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380965759] [2022-11-25 18:28:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:59,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:28:59,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:28:59,025 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:28:59,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ad492-4bf7-463d-b907-56c9a787c70f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-25 18:29:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:01,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 6182 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:29:01,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:29:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-25 18:29:01,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:29:01,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380965759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:01,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:01,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:29:01,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774696245] [2022-11-25 18:29:01,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:01,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:29:01,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:01,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:29:01,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:01,913 INFO L87 Difference]: Start difference. First operand 65890 states and 92343 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2022-11-25 18:29:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:29:05,427 INFO L93 Difference]: Finished difference Result 131755 states and 184653 transitions. [2022-11-25 18:29:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:29:05,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 575 [2022-11-25 18:29:05,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:29:05,824 INFO L225 Difference]: With dead ends: 131755 [2022-11-25 18:29:05,824 INFO L226 Difference]: Without dead ends: 65890 [2022-11-25 18:29:06,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:06,114 INFO L413 NwaCegarLoop]: 3169 mSDtfsCounter, 0 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:29:06,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6333 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:29:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65890 states.