./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--hp--hp100.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8 --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 71a394c873c772dcf5e6708cb37d9b35e24256f5a212c542b9c08f202c87eae6 --- 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-2329fc7 [2022-12-13 15:44:35,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:44:35,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:44:35,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:44:35,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:44:35,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:44:35,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:44:35,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:44:35,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:44:35,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:44:35,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:44:35,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:44:35,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:44:35,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:44:35,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:44:35,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:44:35,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:44:35,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:44:35,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:44:35,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:44:35,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:44:35,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:44:35,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:44:35,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:44:35,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:44:35,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:44:35,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:44:35,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:44:35,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:44:35,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:44:35,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:44:35,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:44:35,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:44:35,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:44:35,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:44:35,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:44:35,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:44:35,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:44:35,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:44:35,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:44:35,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:44:35,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 15:44:35,842 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:44:35,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:44:35,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:44:35,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:44:35,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:44:35,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:44:35,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:44:35,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:44:35,844 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:44:35,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:44:35,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:44:35,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:44:35,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:44:35,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:44:35,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:44:35,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:44:35,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:44:35,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:44:35,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:44:35,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:44:35,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:44:35,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:44:35,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:44:35,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:44:35,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:44:35,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:44:35,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:44:35,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:44:35,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:44:35,848 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:44:35,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:44:35,848 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:44:35,848 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_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a394c873c772dcf5e6708cb37d9b35e24256f5a212c542b9c08f202c87eae6 [2022-12-13 15:44:36,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:44:36,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:44:36,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:44:36,061 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:44:36,061 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:44:36,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2022-12-13 15:44:38,675 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:44:39,030 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:44:39,030 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2022-12-13 15:44:39,056 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/data/5930e38f5/e648a77925c14cb4b97fa285c295789d/FLAGd5126cc8e [2022-12-13 15:44:39,067 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/data/5930e38f5/e648a77925c14cb4b97fa285c295789d [2022-12-13 15:44:39,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:44:39,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:44:39,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:44:39,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:44:39,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:44:39,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:44:39" (1/1) ... [2022-12-13 15:44:39,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68675c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:39, skipping insertion in model container [2022-12-13 15:44:39,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:44:39" (1/1) ... [2022-12-13 15:44:39,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:44:39,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:44:39,608 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-13 15:44:39,628 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-13 15:44:39,634 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-13 15:44:39,641 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-13 15:44:39,660 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-12-13 15:44:39,736 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-13 15:44:39,764 WARN L623 FunctionHandler]: Unknown extern function pci_bus_read_config_word [2022-12-13 15:44:39,768 WARN L623 FunctionHandler]: Unknown extern function pci_bus_write_config_word [2022-12-13 15:44:39,807 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-13 15:44:39,811 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-13 15:44:39,811 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-12-13 15:44:39,817 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-12-13 15:44:39,829 WARN L623 FunctionHandler]: Unknown extern function dma_alloc_attrs [2022-12-13 15:44:39,833 WARN L623 FunctionHandler]: Unknown extern function dma_free_attrs [2022-12-13 15:44:39,845 WARN L623 FunctionHandler]: Unknown extern function dma_set_mask [2022-12-13 15:44:39,903 WARN L623 FunctionHandler]: Unknown extern function skb_pad [2022-12-13 15:44:39,931 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_any [2022-12-13 15:44:39,933 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_any [2022-12-13 15:44:40,018 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,019 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,025 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 15:44:40,029 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-13 15:44:40,030 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,031 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,032 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,033 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,034 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,035 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,037 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,038 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,039 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,039 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-13 15:44:40,039 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 15:44:40,045 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,045 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,046 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,046 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,047 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,047 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,048 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,048 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,049 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,049 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,050 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,050 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,051 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,051 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,052 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-13 15:44:40,052 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-13 15:44:40,066 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,069 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,073 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,075 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,079 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-13 15:44:40,085 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,091 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,093 WARN L623 FunctionHandler]: Unknown extern function dev_trans_start [2022-12-13 15:44:40,094 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,095 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,095 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,096 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,100 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-13 15:44:40,104 WARN L623 FunctionHandler]: Unknown extern function dev_trans_start [2022-12-13 15:44:40,105 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,106 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,106 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,107 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,107 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,108 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,111 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-13 15:44:40,114 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-13 15:44:40,115 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-13 15:44:40,115 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-13 15:44:40,121 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,122 WARN L623 FunctionHandler]: Unknown extern function skb_trim [2022-12-13 15:44:40,122 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-13 15:44:40,123 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-13 15:44:40,133 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 15:44:40,136 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,142 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,144 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,148 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,149 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,150 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,150 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,152 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,153 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,153 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,156 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,159 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,160 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,160 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,161 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,161 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,162 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,163 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,165 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,165 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,168 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-13 15:44:40,169 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-13 15:44:40,173 WARN L623 FunctionHandler]: Unknown extern function pci_enable_device [2022-12-13 15:44:40,173 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-13 15:44:40,175 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-12-13 15:44:40,178 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-12-13 15:44:40,211 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-13 15:44:40,212 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 15:44:40,212 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 15:44:40,212 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 15:44:40,213 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 15:44:40,214 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 15:44:40,214 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 15:44:40,214 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 15:44:40,215 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 15:44:40,215 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_init_4 [2022-12-13 15:44:40,215 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_uninit_4 [2022-12-13 15:44:40,217 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 15:44:40,217 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 15:44:40,217 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 15:44:40,218 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 15:44:40,218 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 15:44:40,219 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 15:44:40,219 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 15:44:40,219 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 15:44:40,220 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_init_3 [2022-12-13 15:44:40,220 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_uninit_3 [2022-12-13 15:44:40,221 WARN L623 FunctionHandler]: Unknown extern function ldv_shutdown_2 [2022-12-13 15:44:40,221 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-12-13 15:44:40,224 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-13 15:44:40,226 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-13 15:44:40,226 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-13 15:44:40,227 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-13 15:44:40,227 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-13 15:44:40,227 WARN L623 FunctionHandler]: Unknown extern function __pci_register_driver [2022-12-13 15:44:40,228 WARN L623 FunctionHandler]: Unknown extern function pci_unregister_driver [2022-12-13 15:44:40,231 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_58d188b1-89bc-45ea-9bf3-b78cda88830b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i[263471,263484] [2022-12-13 15:44:40,252 WARN L623 FunctionHandler]: Unknown extern function ldv_some_page [2022-12-13 15:44:40,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:44:40,294 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:44:40,393 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-13 15:44:40,394 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-13 15:44:40,395 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-13 15:44:40,395 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-13 15:44:40,396 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-12-13 15:44:40,398 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-13 15:44:40,399 WARN L623 FunctionHandler]: Unknown extern function pci_bus_read_config_word [2022-12-13 15:44:40,402 WARN L623 FunctionHandler]: Unknown extern function pci_bus_write_config_word [2022-12-13 15:44:40,408 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-13 15:44:40,409 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-13 15:44:40,409 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-12-13 15:44:40,410 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-12-13 15:44:40,411 WARN L623 FunctionHandler]: Unknown extern function dma_alloc_attrs [2022-12-13 15:44:40,412 WARN L623 FunctionHandler]: Unknown extern function dma_free_attrs [2022-12-13 15:44:40,413 WARN L623 FunctionHandler]: Unknown extern function dma_set_mask [2022-12-13 15:44:40,415 WARN L623 FunctionHandler]: Unknown extern function skb_pad [2022-12-13 15:44:40,417 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_any [2022-12-13 15:44:40,417 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_any [2022-12-13 15:44:40,419 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,420 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,423 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 15:44:40,426 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-13 15:44:40,427 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,428 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,428 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,429 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,429 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,430 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,431 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,432 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,432 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,433 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-13 15:44:40,433 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 15:44:40,436 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,437 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,437 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,437 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,438 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,438 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,439 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,439 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,439 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,440 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,440 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,440 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,440 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,441 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,441 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-13 15:44:40,441 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-13 15:44:40,449 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,451 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,454 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,455 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,456 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-13 15:44:40,459 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,461 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,462 WARN L623 FunctionHandler]: Unknown extern function dev_trans_start [2022-12-13 15:44:40,462 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,463 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,463 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,464 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,466 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-13 15:44:40,469 WARN L623 FunctionHandler]: Unknown extern function dev_trans_start [2022-12-13 15:44:40,469 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,470 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,471 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,471 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,472 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,472 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,474 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-13 15:44:40,476 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-13 15:44:40,477 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-13 15:44:40,477 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-13 15:44:40,479 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,479 WARN L623 FunctionHandler]: Unknown extern function skb_trim [2022-12-13 15:44:40,479 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-13 15:44:40,479 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-13 15:44:40,485 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 15:44:40,487 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,491 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,492 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,495 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,496 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,496 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,496 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,497 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,498 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,498 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,501 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,502 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,503 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-13 15:44:40,503 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,504 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,504 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,505 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,505 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 15:44:40,507 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,507 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 15:44:40,507 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-13 15:44:40,508 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-13 15:44:40,508 WARN L623 FunctionHandler]: Unknown extern function pci_enable_device [2022-12-13 15:44:40,509 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-13 15:44:40,510 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-12-13 15:44:40,511 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-12-13 15:44:40,515 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-13 15:44:40,515 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 15:44:40,515 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 15:44:40,516 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 15:44:40,516 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 15:44:40,517 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 15:44:40,517 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 15:44:40,517 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 15:44:40,517 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 15:44:40,518 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_init_4 [2022-12-13 15:44:40,518 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_uninit_4 [2022-12-13 15:44:40,519 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 15:44:40,519 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 15:44:40,519 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 15:44:40,520 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 15:44:40,520 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 15:44:40,520 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 15:44:40,521 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 15:44:40,521 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 15:44:40,521 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_init_3 [2022-12-13 15:44:40,521 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_uninit_3 [2022-12-13 15:44:40,522 WARN L623 FunctionHandler]: Unknown extern function ldv_shutdown_2 [2022-12-13 15:44:40,522 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-12-13 15:44:40,525 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-13 15:44:40,525 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-13 15:44:40,526 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-13 15:44:40,526 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-13 15:44:40,526 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-13 15:44:40,526 WARN L623 FunctionHandler]: Unknown extern function __pci_register_driver [2022-12-13 15:44:40,527 WARN L623 FunctionHandler]: Unknown extern function pci_unregister_driver [2022-12-13 15:44:40,527 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_58d188b1-89bc-45ea-9bf3-b78cda88830b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i[263471,263484] [2022-12-13 15:44:40,538 WARN L623 FunctionHandler]: Unknown extern function ldv_some_page [2022-12-13 15:44:40,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:44:40,608 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:44:40,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:40 WrapperNode [2022-12-13 15:44:40,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:44:40,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:44:40,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:44:40,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:44:40,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:40" (1/1) ... [2022-12-13 15:44:40,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:40" (1/1) ... [2022-12-13 15:44:40,746 INFO L138 Inliner]: procedures = 225, calls = 1464, calls flagged for inlining = 103, calls inlined = 100, statements flattened = 3737 [2022-12-13 15:44:40,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:44:40,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:44:40,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:44:40,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:44:40,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:40" (1/1) ... [2022-12-13 15:44:40,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:40" (1/1) ... [2022-12-13 15:44:40,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:40" (1/1) ... [2022-12-13 15:44:40,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:40" (1/1) ... [2022-12-13 15:44:40,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:40" (1/1) ... [2022-12-13 15:44:40,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:40" (1/1) ... [2022-12-13 15:44:40,838 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:40" (1/1) ... [2022-12-13 15:44:40,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:40" (1/1) ... [2022-12-13 15:44:40,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:44:40,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:44:40,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:44:40,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:44:40,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:40" (1/1) ... [2022-12-13 15:44:40,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:44:40,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:44:40,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:44:40,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:44:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_update_stats [2022-12-13 15:44:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_update_stats [2022-12-13 15:44:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-13 15:44:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-13 15:44:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-13 15:44:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-13 15:44:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-12-13 15:44:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-12-13 15:44:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-12-13 15:44:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-12-13 15:44:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-12-13 15:44:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-12-13 15:44:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-13 15:44:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-13 15:44:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-12-13 15:44:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-12-13 15:44:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-12-13 15:44:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-12-13 15:44:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-12-13 15:44:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-12-13 15:44:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-13 15:44:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-13 15:44:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 15:44:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 15:44:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2022-12-13 15:44:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2022-12-13 15:44:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_open [2022-12-13 15:44:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_open [2022-12-13 15:44:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_load_eeprom [2022-12-13 15:44:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_load_eeprom [2022-12-13 15:44:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-12-13 15:44:40,925 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-12-13 15:44:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:44:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-13 15:44:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_sense_lan [2022-12-13 15:44:40,925 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_sense_lan [2022-12-13 15:44:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-12-13 15:44:40,925 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-12-13 15:44:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 15:44:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_get_stats [2022-12-13 15:44:40,925 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_get_stats [2022-12-13 15:44:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-12-13 15:44:40,925 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-12-13 15:44:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-12-13 15:44:40,925 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-12-13 15:44:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-12-13 15:44:40,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-12-13 15:44:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-12-13 15:44:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-12-13 15:44:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-12-13 15:44:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-12-13 15:44:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:44:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-12-13 15:44:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-12-13 15:44:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 15:44:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-12-13 15:44:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-12-13 15:44:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-12-13 15:44:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-12-13 15:44:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-12-13 15:44:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-12-13 15:44:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-12-13 15:44:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-12-13 15:44:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-12-13 15:44:40,927 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-12-13 15:44:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-12-13 15:44:40,927 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-12-13 15:44:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-12-13 15:44:40,927 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-12-13 15:44:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-12-13 15:44:40,927 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-12-13 15:44:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_cascade_reset [2022-12-13 15:44:40,927 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_cascade_reset [2022-12-13 15:44:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2022-12-13 15:44:40,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2022-12-13 15:44:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-13 15:44:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-12-13 15:44:40,927 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-12-13 15:44:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 15:44:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_build_rx_pdl [2022-12-13 15:44:40,927 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_build_rx_pdl [2022-12-13 15:44:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-12-13 15:44:40,928 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-12-13 15:44:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:44:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-12-13 15:44:40,928 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-12-13 15:44:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-12-13 15:44:40,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-12-13 15:44:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-13 15:44:40,928 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-13 15:44:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rx_bm [2022-12-13 15:44:40,928 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rx_bm [2022-12-13 15:44:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_BM_shutdown [2022-12-13 15:44:40,928 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_BM_shutdown [2022-12-13 15:44:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-12-13 15:44:40,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-12-13 15:44:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure wait [2022-12-13 15:44:40,928 INFO L138 BoogieDeclarations]: Found implementation of procedure wait [2022-12-13 15:44:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-12-13 15:44:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-12-13 15:44:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-12-13 15:44:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-12-13 15:44:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_hwinit [2022-12-13 15:44:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_hwinit [2022-12-13 15:44:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:44:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-12-13 15:44:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-12-13 15:44:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure dev_consume_skb_any [2022-12-13 15:44:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_consume_skb_any [2022-12-13 15:44:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2022-12-13 15:44:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2022-12-13 15:44:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-13 15:44:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-13 15:44:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_whatever [2022-12-13 15:44:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_whatever [2022-12-13 15:44:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-12-13 15:44:40,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-12-13 15:44:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_close [2022-12-13 15:44:40,930 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_close [2022-12-13 15:44:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-12-13 15:44:40,930 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-12-13 15:44:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_stop_interface [2022-12-13 15:44:40,930 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_stop_interface [2022-12-13 15:44:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 15:44:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_check_lan [2022-12-13 15:44:40,930 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_check_lan [2022-12-13 15:44:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-12-13 15:44:40,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-12-13 15:44:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:44:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-12-13 15:44:40,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-12-13 15:44:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 15:44:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-12-13 15:44:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-12-13 15:44:40,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-12-13 15:44:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_set_multicast_list [2022-12-13 15:44:40,931 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_set_multicast_list [2022-12-13 15:44:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rxfill [2022-12-13 15:44:40,931 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rxfill [2022-12-13 15:44:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_start_interface [2022-12-13 15:44:40,931 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_start_interface [2022-12-13 15:44:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-12-13 15:44:40,931 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-12-13 15:44:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-12-13 15:44:40,931 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-12-13 15:44:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_clean_txring [2022-12-13 15:44:40,931 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_clean_txring [2022-12-13 15:44:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-12-13 15:44:40,931 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-12-13 15:44:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:44:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-12-13 15:44:40,932 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-12-13 15:44:40,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:44:40,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:44:40,932 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_login_to_vg_hub [2022-12-13 15:44:40,932 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_login_to_vg_hub [2022-12-13 15:44:40,932 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-12-13 15:44:40,932 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-12-13 15:44:41,364 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:44:41,366 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:44:41,740 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-13 15:44:43,718 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 15:44:43,894 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume 0 == (if 0 == ~tmp___4~7#1 then 0 else (if 2096896 == ~tmp___4~7#1 then ~tmp___4~7#1 else ~bitwiseAnd(~tmp___4~7#1, 2096896))) % 18446744073709551616; [2022-12-13 15:44:43,894 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !(0 == (if 0 == ~tmp___4~7#1 then 0 else (if 2096896 == ~tmp___4~7#1 then ~tmp___4~7#1 else ~bitwiseAnd(~tmp___4~7#1, 2096896))) % 18446744073709551616); [2022-12-13 15:44:43,894 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8189-1: assume -9223372036854775808 <= #t~ret666#1 && #t~ret666#1 <= 9223372036854775807;havoc #t~ret666#1; [2022-12-13 15:44:43,894 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8189: SUMMARY for call #t~ret666#1 := schedule_timeout_interruptible(1); srcloc: null [2022-12-13 15:44:43,894 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8192: assume (if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0; [2022-12-13 15:44:43,894 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8192: assume !((if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0); [2022-12-13 15:44:43,970 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:44:43,981 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:44:43,981 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-13 15:44:43,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:44:43 BoogieIcfgContainer [2022-12-13 15:44:43,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:44:43,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:44:43,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:44:43,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:44:43,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:44:39" (1/3) ... [2022-12-13 15:44:43,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f36ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:44:43, skipping insertion in model container [2022-12-13 15:44:43,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:44:40" (2/3) ... [2022-12-13 15:44:43,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f36ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:44:43, skipping insertion in model container [2022-12-13 15:44:43,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:44:43" (3/3) ... [2022-12-13 15:44:43,990 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2022-12-13 15:44:44,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:44:44,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:44:44,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:44:44,078 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;@5eb09e85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:44:44,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 15:44:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 1652 states, 1048 states have (on average 1.3587786259541985) internal successors, (1424), 1102 states have internal predecessors, (1424), 535 states have call successors, (535), 70 states have call predecessors, (535), 69 states have return successors, (528), 512 states have call predecessors, (528), 528 states have call successors, (528) [2022-12-13 15:44:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-13 15:44:44,111 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:44,111 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:44:44,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:44,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:44,116 INFO L85 PathProgramCache]: Analyzing trace with hash 484491167, now seen corresponding path program 1 times [2022-12-13 15:44:44,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:44,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515750147] [2022-12-13 15:44:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:44,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:44,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:44,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515750147] [2022-12-13 15:44:44,497 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:44:44,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931068000] [2022-12-13 15:44:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:44,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:44:44,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:44:44,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:44:44,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:44:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:45,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 2199 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 15:44:45,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:44:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-12-13 15:44:45,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:44:45,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931068000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:45,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:45,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:44:45,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104481218] [2022-12-13 15:44:45,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:45,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:44:45,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:45,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:44:45,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:44:45,106 INFO L87 Difference]: Start difference. First operand has 1652 states, 1048 states have (on average 1.3587786259541985) internal successors, (1424), 1102 states have internal predecessors, (1424), 535 states have call successors, (535), 70 states have call predecessors, (535), 69 states have return successors, (528), 512 states have call predecessors, (528), 528 states have call successors, (528) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 15:44:45,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:45,226 INFO L93 Difference]: Finished difference Result 3293 states and 5027 transitions. [2022-12-13 15:44:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:44:45,228 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 174 [2022-12-13 15:44:45,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:45,246 INFO L225 Difference]: With dead ends: 3293 [2022-12-13 15:44:45,246 INFO L226 Difference]: Without dead ends: 1626 [2022-12-13 15:44:45,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:44:45,259 INFO L413 NwaCegarLoop]: 2469 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, 2469 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 [2022-12-13 15:44:45,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:44:45,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2022-12-13 15:44:45,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1626. [2022-12-13 15:44:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1031 states have (on average 1.3482056256062076) internal successors, (1390), 1075 states have internal predecessors, (1390), 526 states have call successors, (526), 69 states have call predecessors, (526), 68 states have return successors, (525), 509 states have call predecessors, (525), 525 states have call successors, (525) [2022-12-13 15:44:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2441 transitions. [2022-12-13 15:44:45,397 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2441 transitions. Word has length 174 [2022-12-13 15:44:45,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:45,397 INFO L495 AbstractCegarLoop]: Abstraction has 1626 states and 2441 transitions. [2022-12-13 15:44:45,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 15:44:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2441 transitions. [2022-12-13 15:44:45,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-12-13 15:44:45,408 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:45,408 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:44:45,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:44:45,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 15:44:45,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:45,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:45,610 INFO L85 PathProgramCache]: Analyzing trace with hash -386975751, now seen corresponding path program 1 times [2022-12-13 15:44:45,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:45,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37919309] [2022-12-13 15:44:45,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:45,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:45,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:44:45,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479283327] [2022-12-13 15:44:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:45,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:44:45,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:44:45,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:44:45,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:44:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:46,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:44:46,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:44:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:44:46,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:44:46,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:46,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37919309] [2022-12-13 15:44:46,448 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:44:46,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479283327] [2022-12-13 15:44:46,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479283327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:46,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:46,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:44:46,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085739134] [2022-12-13 15:44:46,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:46,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:44:46,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:46,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:44:46,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:44:46,452 INFO L87 Difference]: Start difference. First operand 1626 states and 2441 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 15:44:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:46,726 INFO L93 Difference]: Finished difference Result 4849 states and 7292 transitions. [2022-12-13 15:44:46,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:44:46,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2022-12-13 15:44:46,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:46,748 INFO L225 Difference]: With dead ends: 4849 [2022-12-13 15:44:46,749 INFO L226 Difference]: Without dead ends: 3245 [2022-12-13 15:44:46,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:44:46,759 INFO L413 NwaCegarLoop]: 3291 mSDtfsCounter, 2419 mSDsluCounter, 8984 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 12275 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:46,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 12275 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:44:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2022-12-13 15:44:46,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3232. [2022-12-13 15:44:46,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3232 states, 2052 states have (on average 1.3508771929824561) internal successors, (2772), 2144 states have internal predecessors, (2772), 1043 states have call successors, (1043), 137 states have call predecessors, (1043), 136 states have return successors, (1046), 1006 states have call predecessors, (1046), 1042 states have call successors, (1046) [2022-12-13 15:44:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 4861 transitions. [2022-12-13 15:44:46,918 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 4861 transitions. Word has length 171 [2022-12-13 15:44:46,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:46,919 INFO L495 AbstractCegarLoop]: Abstraction has 3232 states and 4861 transitions. [2022-12-13 15:44:46,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 15:44:46,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 4861 transitions. [2022-12-13 15:44:46,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-13 15:44:46,933 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:46,933 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:44:46,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:44:47,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 15:44:47,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:47,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1034306857, now seen corresponding path program 1 times [2022-12-13 15:44:47,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:47,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819690676] [2022-12-13 15:44:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:47,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:47,213 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:44:47,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623804913] [2022-12-13 15:44:47,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:47,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:44:47,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:44:47,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:44:47,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:44:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:47,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 2199 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:44:47,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:44:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:44:47,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:44:47,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:47,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819690676] [2022-12-13 15:44:47,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:44:47,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623804913] [2022-12-13 15:44:47,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623804913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:47,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:47,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:44:47,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143841710] [2022-12-13 15:44:47,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:47,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:44:47,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:47,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:44:47,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:44:47,861 INFO L87 Difference]: Start difference. First operand 3232 states and 4861 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 15:44:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:48,217 INFO L93 Difference]: Finished difference Result 9688 states and 14583 transitions. [2022-12-13 15:44:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:44:48,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 174 [2022-12-13 15:44:48,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:48,274 INFO L225 Difference]: With dead ends: 9688 [2022-12-13 15:44:48,275 INFO L226 Difference]: Without dead ends: 6478 [2022-12-13 15:44:48,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:44:48,302 INFO L413 NwaCegarLoop]: 3222 mSDtfsCounter, 2407 mSDsluCounter, 8832 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 12054 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:48,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 12054 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:44:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6478 states. [2022-12-13 15:44:48,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6478 to 6447. [2022-12-13 15:44:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6447 states, 4098 states have (on average 1.3518789653489507) internal successors, (5540), 4281 states have internal predecessors, (5540), 2076 states have call successors, (2076), 273 states have call predecessors, (2076), 272 states have return successors, (2091), 2004 states have call predecessors, (2091), 2075 states have call successors, (2091) [2022-12-13 15:44:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6447 states to 6447 states and 9707 transitions. [2022-12-13 15:44:48,664 INFO L78 Accepts]: Start accepts. Automaton has 6447 states and 9707 transitions. Word has length 174 [2022-12-13 15:44:48,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:48,665 INFO L495 AbstractCegarLoop]: Abstraction has 6447 states and 9707 transitions. [2022-12-13 15:44:48,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 15:44:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand 6447 states and 9707 transitions. [2022-12-13 15:44:48,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-12-13 15:44:48,672 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:48,672 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:44:48,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:44:48,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:44:48,873 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:48,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:48,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1620918068, now seen corresponding path program 1 times [2022-12-13 15:44:48,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:48,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117623858] [2022-12-13 15:44:48,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:48,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:48,949 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:44:48,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515408888] [2022-12-13 15:44:48,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:48,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:44:48,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:44:48,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:44:48,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:44:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:49,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 2195 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:44:49,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:44:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:44:49,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:44:49,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:49,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117623858] [2022-12-13 15:44:49,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:44:49,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515408888] [2022-12-13 15:44:49,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515408888] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:49,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:49,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:44:49,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425036556] [2022-12-13 15:44:49,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:49,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:44:49,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:49,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:44:49,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:44:49,571 INFO L87 Difference]: Start difference. First operand 6447 states and 9707 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 15:44:50,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:50,069 INFO L93 Difference]: Finished difference Result 19375 states and 29181 transitions. [2022-12-13 15:44:50,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:44:50,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 172 [2022-12-13 15:44:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:50,166 INFO L225 Difference]: With dead ends: 19375 [2022-12-13 15:44:50,166 INFO L226 Difference]: Without dead ends: 12950 [2022-12-13 15:44:50,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:44:50,195 INFO L413 NwaCegarLoop]: 3222 mSDtfsCounter, 2409 mSDsluCounter, 8832 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 12054 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:50,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2413 Valid, 12054 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:44:50,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2022-12-13 15:44:50,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 12885. [2022-12-13 15:44:50,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12885 states, 8198 states have (on average 1.3522810441571116) internal successors, (11086), 8562 states have internal predecessors, (11086), 4141 states have call successors, (4141), 546 states have call predecessors, (4141), 545 states have return successors, (4188), 4000 states have call predecessors, (4188), 4140 states have call successors, (4188) [2022-12-13 15:44:50,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12885 states to 12885 states and 19415 transitions. [2022-12-13 15:44:50,877 INFO L78 Accepts]: Start accepts. Automaton has 12885 states and 19415 transitions. Word has length 172 [2022-12-13 15:44:50,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:50,878 INFO L495 AbstractCegarLoop]: Abstraction has 12885 states and 19415 transitions. [2022-12-13 15:44:50,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 15:44:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand 12885 states and 19415 transitions. [2022-12-13 15:44:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-12-13 15:44:50,889 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:50,889 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:44:50,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:44:51,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:44:51,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:51,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:51,090 INFO L85 PathProgramCache]: Analyzing trace with hash 293847414, now seen corresponding path program 1 times [2022-12-13 15:44:51,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:51,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027227342] [2022-12-13 15:44:51,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:51,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:51,187 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:44:51,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591981891] [2022-12-13 15:44:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:51,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:44:51,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:44:51,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:44:51,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:44:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:51,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:44:51,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:44:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:44:51,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:44:51,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:51,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027227342] [2022-12-13 15:44:51,763 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:44:51,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591981891] [2022-12-13 15:44:51,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591981891] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:51,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:51,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:44:51,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698414235] [2022-12-13 15:44:51,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:51,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:44:51,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:51,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:44:51,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:44:51,765 INFO L87 Difference]: Start difference. First operand 12885 states and 19415 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 15:44:52,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:52,444 INFO L93 Difference]: Finished difference Result 38603 states and 58177 transitions. [2022-12-13 15:44:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:44:52,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 173 [2022-12-13 15:44:52,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:52,563 INFO L225 Difference]: With dead ends: 38603 [2022-12-13 15:44:52,564 INFO L226 Difference]: Without dead ends: 25740 [2022-12-13 15:44:52,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:44:52,614 INFO L413 NwaCegarLoop]: 2959 mSDtfsCounter, 2408 mSDsluCounter, 8306 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2412 SdHoareTripleChecker+Valid, 11265 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:52,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2412 Valid, 11265 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:44:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25740 states. [2022-12-13 15:44:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25740 to 25604. [2022-12-13 15:44:53,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25604 states, 16293 states have (on average 1.3527281654698338) internal successors, (22040), 17011 states have internal predecessors, (22040), 8224 states have call successors, (8224), 1087 states have call predecessors, (8224), 1086 states have return successors, (8351), 7947 states have call predecessors, (8351), 8223 states have call successors, (8351) [2022-12-13 15:44:53,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25604 states to 25604 states and 38615 transitions. [2022-12-13 15:44:53,883 INFO L78 Accepts]: Start accepts. Automaton has 25604 states and 38615 transitions. Word has length 173 [2022-12-13 15:44:53,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:53,883 INFO L495 AbstractCegarLoop]: Abstraction has 25604 states and 38615 transitions. [2022-12-13 15:44:53,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 15:44:53,884 INFO L276 IsEmpty]: Start isEmpty. Operand 25604 states and 38615 transitions. [2022-12-13 15:44:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-13 15:44:53,899 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:53,899 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:44:53,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:44:54,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:44:54,100 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:54,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:54,100 INFO L85 PathProgramCache]: Analyzing trace with hash -695910732, now seen corresponding path program 1 times [2022-12-13 15:44:54,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:54,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893579134] [2022-12-13 15:44:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:54,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:54,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:44:54,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506039981] [2022-12-13 15:44:54,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:54,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:44:54,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:44:54,162 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:44:54,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:44:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:54,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 2258 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:44:54,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:44:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:44:54,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:44:54,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:54,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893579134] [2022-12-13 15:44:54,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:44:54,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506039981] [2022-12-13 15:44:54,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506039981] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:54,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:54,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:44:54,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350560679] [2022-12-13 15:44:54,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:54,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:44:54,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:54,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:44:54,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:44:54,686 INFO L87 Difference]: Start difference. First operand 25604 states and 38615 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 15:44:55,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:55,673 INFO L93 Difference]: Finished difference Result 64150 states and 96699 transitions. [2022-12-13 15:44:55,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:44:55,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 184 [2022-12-13 15:44:55,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:44:55,833 INFO L225 Difference]: With dead ends: 64150 [2022-12-13 15:44:55,833 INFO L226 Difference]: Without dead ends: 38568 [2022-12-13 15:44:55,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:44:55,918 INFO L413 NwaCegarLoop]: 3530 mSDtfsCounter, 2461 mSDsluCounter, 16510 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 20040 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:44:55,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2465 Valid, 20040 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:44:55,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38568 states. [2022-12-13 15:44:57,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38568 to 38219. [2022-12-13 15:44:57,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38219 states, 24300 states have (on average 1.3531687242798354) internal successors, (32882), 25376 states have internal predecessors, (32882), 12295 states have call successors, (12295), 1616 states have call predecessors, (12295), 1623 states have return successors, (12522), 11886 states have call predecessors, (12522), 12294 states have call successors, (12522) [2022-12-13 15:44:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38219 states to 38219 states and 57699 transitions. [2022-12-13 15:44:57,737 INFO L78 Accepts]: Start accepts. Automaton has 38219 states and 57699 transitions. Word has length 184 [2022-12-13 15:44:57,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:44:57,737 INFO L495 AbstractCegarLoop]: Abstraction has 38219 states and 57699 transitions. [2022-12-13 15:44:57,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 15:44:57,737 INFO L276 IsEmpty]: Start isEmpty. Operand 38219 states and 57699 transitions. [2022-12-13 15:44:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 15:44:57,755 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:44:57,755 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 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] [2022-12-13 15:44:57,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 15:44:57,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:44:57,956 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:44:57,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:44:57,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1719604644, now seen corresponding path program 1 times [2022-12-13 15:44:57,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:44:57,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789262154] [2022-12-13 15:44:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:57,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:44:58,023 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:44:58,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743928813] [2022-12-13 15:44:58,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:44:58,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:44:58,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:44:58,025 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:44:58,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:44:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:44:58,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 2260 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:44:58,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:44:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:44:58,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:44:58,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:44:58,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789262154] [2022-12-13 15:44:58,560 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:44:58,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743928813] [2022-12-13 15:44:58,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743928813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:44:58,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:44:58,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:44:58,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260255273] [2022-12-13 15:44:58,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:44:58,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:44:58,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:44:58,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:44:58,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:44:58,563 INFO L87 Difference]: Start difference. First operand 38219 states and 57699 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 15:44:59,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:44:59,825 INFO L93 Difference]: Finished difference Result 89521 states and 135017 transitions. [2022-12-13 15:44:59,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:44:59,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 185 [2022-12-13 15:44:59,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:45:00,059 INFO L225 Difference]: With dead ends: 89521 [2022-12-13 15:45:00,060 INFO L226 Difference]: Without dead ends: 51324 [2022-12-13 15:45:00,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:45:00,254 INFO L413 NwaCegarLoop]: 3536 mSDtfsCounter, 2461 mSDsluCounter, 16534 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 20070 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:45:00,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2465 Valid, 20070 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:45:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51324 states. [2022-12-13 15:45:02,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51324 to 50962. [2022-12-13 15:45:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50962 states, 32403 states have (on average 1.3528377002129433) internal successors, (43836), 33861 states have internal predecessors, (43836), 16374 states have call successors, (16374), 2153 states have call predecessors, (16374), 2184 states have return successors, (16717), 15825 states have call predecessors, (16717), 16373 states have call successors, (16717) [2022-12-13 15:45:02,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50962 states to 50962 states and 76927 transitions. [2022-12-13 15:45:02,886 INFO L78 Accepts]: Start accepts. Automaton has 50962 states and 76927 transitions. Word has length 185 [2022-12-13 15:45:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:45:02,887 INFO L495 AbstractCegarLoop]: Abstraction has 50962 states and 76927 transitions. [2022-12-13 15:45:02,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 15:45:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 50962 states and 76927 transitions. [2022-12-13 15:45:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-12-13 15:45:02,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:45:02,916 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 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] [2022-12-13 15:45:02,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 15:45:03,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:45:03,117 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:45:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:45:03,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1947413619, now seen corresponding path program 1 times [2022-12-13 15:45:03,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:45:03,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608536473] [2022-12-13 15:45:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:03,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:45:03,184 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:45:03,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253250286] [2022-12-13 15:45:03,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:03,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:45:03,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:45:03,186 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:45:03,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 15:45:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:03,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 2262 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:45:03,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:45:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:45:03,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:45:03,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:45:03,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608536473] [2022-12-13 15:45:03,739 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:45:03,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253250286] [2022-12-13 15:45:03,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253250286] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:45:03,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:45:03,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:45:03,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71924640] [2022-12-13 15:45:03,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:45:03,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:45:03,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:45:03,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:45:03,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:45:03,742 INFO L87 Difference]: Start difference. First operand 50962 states and 76927 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 15:45:05,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:45:05,436 INFO L93 Difference]: Finished difference Result 114988 states and 173447 transitions. [2022-12-13 15:45:05,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:45:05,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 186 [2022-12-13 15:45:05,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:45:05,741 INFO L225 Difference]: With dead ends: 114988 [2022-12-13 15:45:05,741 INFO L226 Difference]: Without dead ends: 64048 [2022-12-13 15:45:05,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:45:05,932 INFO L413 NwaCegarLoop]: 3542 mSDtfsCounter, 2461 mSDsluCounter, 16558 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 20100 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:45:05,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2465 Valid, 20100 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:45:05,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64048 states. [2022-12-13 15:45:07,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64048 to 51000. [2022-12-13 15:45:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51000 states, 32431 states have (on average 1.3525330702106009) internal successors, (43864), 33891 states have internal predecessors, (43864), 16374 states have call successors, (16374), 2153 states have call predecessors, (16374), 2194 states have return successors, (16730), 15833 states have call predecessors, (16730), 16373 states have call successors, (16730) [2022-12-13 15:45:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51000 states to 51000 states and 76968 transitions. [2022-12-13 15:45:08,201 INFO L78 Accepts]: Start accepts. Automaton has 51000 states and 76968 transitions. Word has length 186 [2022-12-13 15:45:08,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:45:08,202 INFO L495 AbstractCegarLoop]: Abstraction has 51000 states and 76968 transitions. [2022-12-13 15:45:08,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 15:45:08,202 INFO L276 IsEmpty]: Start isEmpty. Operand 51000 states and 76968 transitions. [2022-12-13 15:45:08,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-12-13 15:45:08,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:45:08,222 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 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] [2022-12-13 15:45:08,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 15:45:08,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 15:45:08,424 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:45:08,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:45:08,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1022373973, now seen corresponding path program 1 times [2022-12-13 15:45:08,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:45:08,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340071785] [2022-12-13 15:45:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:08,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:45:08,506 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:45:08,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230378798] [2022-12-13 15:45:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:08,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:45:08,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:45:08,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:45:08,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 15:45:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:09,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 2264 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:45:09,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:45:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:45:09,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:45:09,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:45:09,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340071785] [2022-12-13 15:45:09,065 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:45:09,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230378798] [2022-12-13 15:45:09,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230378798] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:45:09,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:45:09,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:45:09,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560597808] [2022-12-13 15:45:09,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:45:09,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:45:09,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:45:09,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:45:09,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:45:09,067 INFO L87 Difference]: Start difference. First operand 51000 states and 76968 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 15:45:11,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:45:11,032 INFO L93 Difference]: Finished difference Result 115042 states and 173504 transitions. [2022-12-13 15:45:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:45:11,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 187 [2022-12-13 15:45:11,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:45:11,352 INFO L225 Difference]: With dead ends: 115042 [2022-12-13 15:45:11,352 INFO L226 Difference]: Without dead ends: 64064 [2022-12-13 15:45:11,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:45:11,576 INFO L413 NwaCegarLoop]: 3542 mSDtfsCounter, 2461 mSDsluCounter, 16558 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 20100 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:45:11,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2465 Valid, 20100 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:45:11,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64064 states. [2022-12-13 15:45:13,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64064 to 51029. [2022-12-13 15:45:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51029 states, 32453 states have (on average 1.3522940868332665) internal successors, (43886), 33912 states have internal predecessors, (43886), 16374 states have call successors, (16374), 2153 states have call predecessors, (16374), 2201 states have return successors, (16737), 15841 states have call predecessors, (16737), 16373 states have call successors, (16737) [2022-12-13 15:45:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51029 states to 51029 states and 76997 transitions. [2022-12-13 15:45:14,024 INFO L78 Accepts]: Start accepts. Automaton has 51029 states and 76997 transitions. Word has length 187 [2022-12-13 15:45:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:45:14,025 INFO L495 AbstractCegarLoop]: Abstraction has 51029 states and 76997 transitions. [2022-12-13 15:45:14,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 15:45:14,025 INFO L276 IsEmpty]: Start isEmpty. Operand 51029 states and 76997 transitions. [2022-12-13 15:45:14,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-12-13 15:45:14,123 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:45:14,123 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:45:14,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 15:45:14,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:45:14,324 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:45:14,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:45:14,324 INFO L85 PathProgramCache]: Analyzing trace with hash -765644276, now seen corresponding path program 1 times [2022-12-13 15:45:14,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:45:14,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658518793] [2022-12-13 15:45:14,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:14,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:45:14,371 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:45:14,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052789531] [2022-12-13 15:45:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:14,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:45:14,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:45:14,372 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:45:14,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 15:45:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:14,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 2266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 15:45:14,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:45:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:45:14,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:45:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:45:15,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:45:15,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658518793] [2022-12-13 15:45:15,061 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:45:15,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052789531] [2022-12-13 15:45:15,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052789531] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:45:15,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:45:15,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2022-12-13 15:45:15,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340140435] [2022-12-13 15:45:15,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:45:15,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:45:15,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:45:15,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:45:15,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:45:15,064 INFO L87 Difference]: Start difference. First operand 51029 states and 76997 transitions. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 9 states have internal predecessors, (108), 4 states have call successors, (42), 4 states have call predecessors, (42), 5 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-12-13 15:45:22,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:45:22,142 INFO L93 Difference]: Finished difference Result 128241 states and 193371 transitions. [2022-12-13 15:45:22,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 15:45:22,142 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 9 states have internal predecessors, (108), 4 states have call successors, (42), 4 states have call predecessors, (42), 5 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 187 [2022-12-13 15:45:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:45:22,413 INFO L225 Difference]: With dead ends: 128241 [2022-12-13 15:45:22,413 INFO L226 Difference]: Without dead ends: 77234 [2022-12-13 15:45:22,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 360 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=304, Invalid=1102, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 15:45:22,562 INFO L413 NwaCegarLoop]: 5004 mSDtfsCounter, 7337 mSDsluCounter, 23034 mSDsCounter, 0 mSdLazyCounter, 4465 mSolverCounterSat, 2148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7351 SdHoareTripleChecker+Valid, 28038 SdHoareTripleChecker+Invalid, 6613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2148 IncrementalHoareTripleChecker+Valid, 4465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:45:22,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7351 Valid, 28038 Invalid, 6613 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2148 Valid, 4465 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-13 15:45:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77234 states. [2022-12-13 15:45:24,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77234 to 51317. [2022-12-13 15:45:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51317 states, 32633 states have (on average 1.35084117304569) internal successors, (44082), 34108 states have internal predecessors, (44082), 16470 states have call successors, (16470), 2153 states have call predecessors, (16470), 2213 states have return successors, (16861), 15933 states have call predecessors, (16861), 16469 states have call successors, (16861) [2022-12-13 15:45:25,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51317 states to 51317 states and 77413 transitions. [2022-12-13 15:45:25,133 INFO L78 Accepts]: Start accepts. Automaton has 51317 states and 77413 transitions. Word has length 187 [2022-12-13 15:45:25,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:45:25,133 INFO L495 AbstractCegarLoop]: Abstraction has 51317 states and 77413 transitions. [2022-12-13 15:45:25,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 9 states have internal predecessors, (108), 4 states have call successors, (42), 4 states have call predecessors, (42), 5 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-12-13 15:45:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand 51317 states and 77413 transitions. [2022-12-13 15:45:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-12-13 15:45:25,152 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:45:25,152 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:45:25,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 15:45:25,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:45:25,353 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:45:25,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:45:25,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1365340739, now seen corresponding path program 1 times [2022-12-13 15:45:25,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:45:25,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091329537] [2022-12-13 15:45:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:25,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:45:25,430 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:45:25,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956566699] [2022-12-13 15:45:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:25,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:45:25,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:45:25,431 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:45:25,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 15:45:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:25,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 2268 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 15:45:25,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:45:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:45:26,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:45:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:45:26,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:45:26,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091329537] [2022-12-13 15:45:26,230 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:45:26,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956566699] [2022-12-13 15:45:26,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956566699] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:45:26,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:45:26,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2022-12-13 15:45:26,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699972667] [2022-12-13 15:45:26,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:45:26,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:45:26,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:45:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:45:26,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:45:26,232 INFO L87 Difference]: Start difference. First operand 51317 states and 77413 transitions. Second operand has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (42), 4 states have call predecessors, (42), 5 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-12-13 15:45:34,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:45:34,052 INFO L93 Difference]: Finished difference Result 128977 states and 194427 transitions. [2022-12-13 15:45:34,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 15:45:34,053 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (42), 4 states have call predecessors, (42), 5 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 188 [2022-12-13 15:45:34,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:45:34,376 INFO L225 Difference]: With dead ends: 128977 [2022-12-13 15:45:34,376 INFO L226 Difference]: Without dead ends: 77682 [2022-12-13 15:45:34,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 362 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=304, Invalid=1102, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 15:45:34,571 INFO L413 NwaCegarLoop]: 4742 mSDtfsCounter, 7389 mSDsluCounter, 31817 mSDsCounter, 0 mSdLazyCounter, 7966 mSolverCounterSat, 2184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7403 SdHoareTripleChecker+Valid, 36559 SdHoareTripleChecker+Invalid, 10150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2184 IncrementalHoareTripleChecker+Valid, 7966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:45:34,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7403 Valid, 36559 Invalid, 10150 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2184 Valid, 7966 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-13 15:45:34,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77682 states. [2022-12-13 15:45:37,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77682 to 51605. [2022-12-13 15:45:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51605 states, 32813 states have (on average 1.3494041995550543) internal successors, (44278), 34304 states have internal predecessors, (44278), 16566 states have call successors, (16566), 2153 states have call predecessors, (16566), 2225 states have return successors, (16985), 16025 states have call predecessors, (16985), 16565 states have call successors, (16985) [2022-12-13 15:45:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51605 states to 51605 states and 77829 transitions. [2022-12-13 15:45:37,572 INFO L78 Accepts]: Start accepts. Automaton has 51605 states and 77829 transitions. Word has length 188 [2022-12-13 15:45:37,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:45:37,572 INFO L495 AbstractCegarLoop]: Abstraction has 51605 states and 77829 transitions. [2022-12-13 15:45:37,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (42), 4 states have call predecessors, (42), 5 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-12-13 15:45:37,572 INFO L276 IsEmpty]: Start isEmpty. Operand 51605 states and 77829 transitions. [2022-12-13 15:45:37,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-12-13 15:45:37,596 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:45:37,597 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:45:37,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 15:45:37,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:45:37,798 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:45:37,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:45:37,799 INFO L85 PathProgramCache]: Analyzing trace with hash 23647045, now seen corresponding path program 1 times [2022-12-13 15:45:37,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:45:37,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599580933] [2022-12-13 15:45:37,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:37,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:45:37,892 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:45:37,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21633984] [2022-12-13 15:45:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:37,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:45:37,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:45:37,893 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:45:37,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 15:45:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:38,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 2270 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 15:45:38,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:45:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:45:38,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:45:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 15:45:38,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:45:38,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599580933] [2022-12-13 15:45:38,643 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:45:38,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21633984] [2022-12-13 15:45:38,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21633984] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:45:38,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:45:38,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2022-12-13 15:45:38,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273252404] [2022-12-13 15:45:38,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:45:38,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:45:38,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:45:38,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:45:38,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:45:38,646 INFO L87 Difference]: Start difference. First operand 51605 states and 77829 transitions. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (42), 4 states have call predecessors, (42), 5 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-12-13 15:45:46,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:45:46,503 INFO L93 Difference]: Finished difference Result 129713 states and 195483 transitions. [2022-12-13 15:45:46,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 15:45:46,504 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (42), 4 states have call predecessors, (42), 5 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 189 [2022-12-13 15:45:46,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:45:46,907 INFO L225 Difference]: With dead ends: 129713 [2022-12-13 15:45:46,907 INFO L226 Difference]: Without dead ends: 78130 [2022-12-13 15:45:47,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 364 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=304, Invalid=1102, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 15:45:47,090 INFO L413 NwaCegarLoop]: 4497 mSDtfsCounter, 7709 mSDsluCounter, 26761 mSDsCounter, 0 mSdLazyCounter, 5965 mSolverCounterSat, 2269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7723 SdHoareTripleChecker+Valid, 31258 SdHoareTripleChecker+Invalid, 8234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2269 IncrementalHoareTripleChecker+Valid, 5965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:45:47,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7723 Valid, 31258 Invalid, 8234 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2269 Valid, 5965 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-12-13 15:45:47,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78130 states. [2022-12-13 15:45:49,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78130 to 51893. [2022-12-13 15:45:49,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51893 states, 32993 states have (on average 1.3479829054647956) internal successors, (44474), 34500 states have internal predecessors, (44474), 16662 states have call successors, (16662), 2153 states have call predecessors, (16662), 2237 states have return successors, (17109), 16117 states have call predecessors, (17109), 16661 states have call successors, (17109) [2022-12-13 15:45:49,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51893 states to 51893 states and 78245 transitions. [2022-12-13 15:45:49,764 INFO L78 Accepts]: Start accepts. Automaton has 51893 states and 78245 transitions. Word has length 189 [2022-12-13 15:45:49,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:45:49,765 INFO L495 AbstractCegarLoop]: Abstraction has 51893 states and 78245 transitions. [2022-12-13 15:45:49,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (42), 4 states have call predecessors, (42), 5 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-12-13 15:45:49,765 INFO L276 IsEmpty]: Start isEmpty. Operand 51893 states and 78245 transitions. [2022-12-13 15:45:49,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-12-13 15:45:49,791 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:45:49,792 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:45:49,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 15:45:49,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:45:49,993 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:45:49,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:45:49,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1385189151, now seen corresponding path program 1 times [2022-12-13 15:45:49,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:45:49,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378165580] [2022-12-13 15:45:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:49,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:45:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:50,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:45:50,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378165580] [2022-12-13 15:45:50,120 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:45:50,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439704082] [2022-12-13 15:45:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:50,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:45:50,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:45:50,122 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:45:50,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 15:45:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:50,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 2331 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 15:45:50,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:45:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-12-13 15:45:50,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:45:50,852 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-12-13 15:45:50,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439704082] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:45:50,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:45:50,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2022-12-13 15:45:50,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611959092] [2022-12-13 15:45:50,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:45:50,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:45:50,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:45:50,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:45:50,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:45:50,855 INFO L87 Difference]: Start difference. First operand 51893 states and 78245 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-13 15:45:55,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:45:55,475 INFO L93 Difference]: Finished difference Result 130043 states and 195991 transitions. [2022-12-13 15:45:55,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 15:45:55,477 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 200 [2022-12-13 15:45:55,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:45:55,772 INFO L225 Difference]: With dead ends: 130043 [2022-12-13 15:45:55,773 INFO L226 Difference]: Without dead ends: 78172 [2022-12-13 15:45:55,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 381 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2022-12-13 15:45:55,947 INFO L413 NwaCegarLoop]: 3527 mSDtfsCounter, 2707 mSDsluCounter, 26789 mSDsCounter, 0 mSdLazyCounter, 3788 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 30316 SdHoareTripleChecker+Invalid, 3985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 3788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:45:55,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2714 Valid, 30316 Invalid, 3985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 3788 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 15:45:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78172 states. [2022-12-13 15:45:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78172 to 52061. [2022-12-13 15:45:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52061 states, 33101 states have (on average 1.3470892118062898) internal successors, (44590), 34616 states have internal predecessors, (44590), 16710 states have call successors, (16710), 2153 states have call predecessors, (16710), 2249 states have return successors, (17177), 16169 states have call predecessors, (17177), 16709 states have call successors, (17177) [2022-12-13 15:45:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52061 states to 52061 states and 78477 transitions. [2022-12-13 15:45:58,639 INFO L78 Accepts]: Start accepts. Automaton has 52061 states and 78477 transitions. Word has length 200 [2022-12-13 15:45:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:45:58,640 INFO L495 AbstractCegarLoop]: Abstraction has 52061 states and 78477 transitions. [2022-12-13 15:45:58,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-13 15:45:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand 52061 states and 78477 transitions. [2022-12-13 15:45:58,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-12-13 15:45:58,666 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:45:58,666 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:45:58,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 15:45:58,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 15:45:58,868 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:45:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:45:58,869 INFO L85 PathProgramCache]: Analyzing trace with hash 662708112, now seen corresponding path program 1 times [2022-12-13 15:45:58,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:45:58,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979141954] [2022-12-13 15:45:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:58,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:45:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:58,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:45:58,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979141954] [2022-12-13 15:45:58,981 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:45:58,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122890046] [2022-12-13 15:45:58,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:45:58,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:45:58,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:45:58,982 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:45:58,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 15:45:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:45:59,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 2333 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 15:45:59,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:45:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-12-13 15:45:59,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:45:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-12-13 15:45:59,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122890046] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:45:59,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:45:59,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2022-12-13 15:45:59,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805402530] [2022-12-13 15:45:59,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:45:59,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:45:59,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:45:59,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:45:59,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:45:59,703 INFO L87 Difference]: Start difference. First operand 52061 states and 78477 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-13 15:46:04,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:46:04,378 INFO L93 Difference]: Finished difference Result 143163 states and 215749 transitions. [2022-12-13 15:46:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 15:46:04,379 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 201 [2022-12-13 15:46:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:46:04,753 INFO L225 Difference]: With dead ends: 143163 [2022-12-13 15:46:04,753 INFO L226 Difference]: Without dead ends: 91124 [2022-12-13 15:46:04,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 383 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2022-12-13 15:46:04,956 INFO L413 NwaCegarLoop]: 3527 mSDtfsCounter, 2707 mSDsluCounter, 26789 mSDsCounter, 0 mSdLazyCounter, 3788 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 30316 SdHoareTripleChecker+Invalid, 3985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 3788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:46:04,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2714 Valid, 30316 Invalid, 3985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 3788 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 15:46:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91124 states. [2022-12-13 15:46:07,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91124 to 52077. [2022-12-13 15:46:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52077 states, 33113 states have (on average 1.3469634282608038) internal successors, (44602), 34628 states have internal predecessors, (44602), 16710 states have call successors, (16710), 2153 states have call predecessors, (16710), 2253 states have return successors, (17181), 16173 states have call predecessors, (17181), 16709 states have call successors, (17181) [2022-12-13 15:46:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52077 states to 52077 states and 78493 transitions. [2022-12-13 15:46:08,000 INFO L78 Accepts]: Start accepts. Automaton has 52077 states and 78493 transitions. Word has length 201 [2022-12-13 15:46:08,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:46:08,001 INFO L495 AbstractCegarLoop]: Abstraction has 52077 states and 78493 transitions. [2022-12-13 15:46:08,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-13 15:46:08,001 INFO L276 IsEmpty]: Start isEmpty. Operand 52077 states and 78493 transitions. [2022-12-13 15:46:08,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-12-13 15:46:08,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:46:08,029 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:46:08,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 15:46:08,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 15:46:08,231 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:46:08,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:46:08,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1781622328, now seen corresponding path program 1 times [2022-12-13 15:46:08,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:46:08,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222399928] [2022-12-13 15:46:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:46:08,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:46:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:08,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:46:08,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222399928] [2022-12-13 15:46:08,362 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:46:08,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165058395] [2022-12-13 15:46:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:46:08,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:46:08,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:46:08,363 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:46:08,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 15:46:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:08,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 2335 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 15:46:08,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:46:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-12-13 15:46:08,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:46:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-12-13 15:46:09,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165058395] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:46:09,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:46:09,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2022-12-13 15:46:09,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191638206] [2022-12-13 15:46:09,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:46:09,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:46:09,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:46:09,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:46:09,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:46:09,125 INFO L87 Difference]: Start difference. First operand 52077 states and 78493 transitions. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-13 15:46:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:46:13,603 INFO L93 Difference]: Finished difference Result 143187 states and 215773 transitions. [2022-12-13 15:46:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 15:46:13,604 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 202 [2022-12-13 15:46:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:46:14,006 INFO L225 Difference]: With dead ends: 143187 [2022-12-13 15:46:14,006 INFO L226 Difference]: Without dead ends: 91132 [2022-12-13 15:46:14,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 385 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2022-12-13 15:46:14,225 INFO L413 NwaCegarLoop]: 3527 mSDtfsCounter, 2707 mSDsluCounter, 21223 mSDsCounter, 0 mSdLazyCounter, 2692 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 24750 SdHoareTripleChecker+Invalid, 2889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 2692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:46:14,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2714 Valid, 24750 Invalid, 2889 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 2692 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 15:46:14,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91132 states. [2022-12-13 15:46:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91132 to 52093. [2022-12-13 15:46:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52093 states, 33125 states have (on average 1.3468377358490566) internal successors, (44614), 34640 states have internal predecessors, (44614), 16710 states have call successors, (16710), 2153 states have call predecessors, (16710), 2257 states have return successors, (17185), 16177 states have call predecessors, (17185), 16709 states have call successors, (17185) [2022-12-13 15:46:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52093 states to 52093 states and 78509 transitions. [2022-12-13 15:46:17,229 INFO L78 Accepts]: Start accepts. Automaton has 52093 states and 78509 transitions. Word has length 202 [2022-12-13 15:46:17,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:46:17,230 INFO L495 AbstractCegarLoop]: Abstraction has 52093 states and 78509 transitions. [2022-12-13 15:46:17,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-13 15:46:17,230 INFO L276 IsEmpty]: Start isEmpty. Operand 52093 states and 78509 transitions. [2022-12-13 15:46:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-12-13 15:46:17,384 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:46:17,384 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:46:17,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 15:46:17,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 15:46:17,586 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:46:17,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:46:17,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1444605135, now seen corresponding path program 1 times [2022-12-13 15:46:17,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:46:17,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032892754] [2022-12-13 15:46:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:46:17,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:46:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:17,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:46:17,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032892754] [2022-12-13 15:46:17,709 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:46:17,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648085893] [2022-12-13 15:46:17,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:46:17,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:46:17,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:46:17,711 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:46:17,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 15:46:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:18,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 15:46:18,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:46:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-12-13 15:46:18,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:46:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-12-13 15:46:18,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648085893] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:46:18,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:46:18,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2022-12-13 15:46:18,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397052584] [2022-12-13 15:46:18,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:46:18,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:46:18,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:46:18,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:46:18,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:46:18,640 INFO L87 Difference]: Start difference. First operand 52093 states and 78509 transitions. Second operand has 16 states, 16 states have (on average 7.5625) internal successors, (121), 13 states have internal predecessors, (121), 4 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) [2022-12-13 15:46:29,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:46:29,172 INFO L93 Difference]: Finished difference Result 143201 states and 215785 transitions. [2022-12-13 15:46:29,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 15:46:29,173 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 13 states have internal predecessors, (121), 4 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) Word has length 202 [2022-12-13 15:46:29,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:46:29,536 INFO L225 Difference]: With dead ends: 143201 [2022-12-13 15:46:29,536 INFO L226 Difference]: Without dead ends: 91130 [2022-12-13 15:46:29,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 382 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=476, Invalid=1974, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 15:46:29,738 INFO L413 NwaCegarLoop]: 5035 mSDtfsCounter, 8064 mSDsluCounter, 33658 mSDsCounter, 0 mSdLazyCounter, 8303 mSolverCounterSat, 2454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8078 SdHoareTripleChecker+Valid, 38693 SdHoareTripleChecker+Invalid, 10757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2454 IncrementalHoareTripleChecker+Valid, 8303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:46:29,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8078 Valid, 38693 Invalid, 10757 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2454 Valid, 8303 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-12-13 15:46:29,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91130 states. [2022-12-13 15:46:32,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91130 to 52077. [2022-12-13 15:46:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52077 states, 33113 states have (on average 1.3469634282608038) internal successors, (44602), 34628 states have internal predecessors, (44602), 16710 states have call successors, (16710), 2153 states have call predecessors, (16710), 2253 states have return successors, (17181), 16173 states have call predecessors, (17181), 16709 states have call successors, (17181) [2022-12-13 15:46:32,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52077 states to 52077 states and 78493 transitions. [2022-12-13 15:46:32,747 INFO L78 Accepts]: Start accepts. Automaton has 52077 states and 78493 transitions. Word has length 202 [2022-12-13 15:46:32,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:46:32,747 INFO L495 AbstractCegarLoop]: Abstraction has 52077 states and 78493 transitions. [2022-12-13 15:46:32,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 13 states have internal predecessors, (121), 4 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) [2022-12-13 15:46:32,747 INFO L276 IsEmpty]: Start isEmpty. Operand 52077 states and 78493 transitions. [2022-12-13 15:46:32,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-12-13 15:46:32,774 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:46:32,774 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:46:32,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-13 15:46:32,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:46:32,976 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:46:32,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:46:32,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1933360992, now seen corresponding path program 1 times [2022-12-13 15:46:32,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:46:32,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84298449] [2022-12-13 15:46:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:46:32,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:46:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:33,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:46:33,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84298449] [2022-12-13 15:46:33,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:46:33,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520336178] [2022-12-13 15:46:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:46:33,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:46:33,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:46:33,067 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:46:33,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 15:46:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:33,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 15:46:33,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:46:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-12-13 15:46:33,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:46:33,973 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-12-13 15:46:33,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520336178] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:46:33,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:46:33,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2022-12-13 15:46:33,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142392421] [2022-12-13 15:46:33,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:46:33,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:46:33,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:46:33,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:46:33,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:46:33,974 INFO L87 Difference]: Start difference. First operand 52077 states and 78493 transitions. Second operand has 16 states, 16 states have (on average 7.625) internal successors, (122), 13 states have internal predecessors, (122), 4 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) [2022-12-13 15:46:45,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:46:45,001 INFO L93 Difference]: Finished difference Result 143177 states and 215761 transitions. [2022-12-13 15:46:45,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 15:46:45,002 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 13 states have internal predecessors, (122), 4 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) Word has length 203 [2022-12-13 15:46:45,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:46:45,404 INFO L225 Difference]: With dead ends: 143177 [2022-12-13 15:46:45,404 INFO L226 Difference]: Without dead ends: 91122 [2022-12-13 15:46:45,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 384 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=476, Invalid=1974, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 15:46:45,640 INFO L413 NwaCegarLoop]: 4531 mSDtfsCounter, 8057 mSDsluCounter, 33235 mSDsCounter, 0 mSdLazyCounter, 9482 mSolverCounterSat, 2488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8071 SdHoareTripleChecker+Valid, 37766 SdHoareTripleChecker+Invalid, 11970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2488 IncrementalHoareTripleChecker+Valid, 9482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-12-13 15:46:45,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8071 Valid, 37766 Invalid, 11970 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2488 Valid, 9482 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-12-13 15:46:45,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91122 states. [2022-12-13 15:46:48,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91122 to 52061. [2022-12-13 15:46:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52061 states, 33101 states have (on average 1.3470892118062898) internal successors, (44590), 34616 states have internal predecessors, (44590), 16710 states have call successors, (16710), 2153 states have call predecessors, (16710), 2249 states have return successors, (17177), 16169 states have call predecessors, (17177), 16709 states have call successors, (17177) [2022-12-13 15:46:48,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52061 states to 52061 states and 78477 transitions. [2022-12-13 15:46:48,688 INFO L78 Accepts]: Start accepts. Automaton has 52061 states and 78477 transitions. Word has length 203 [2022-12-13 15:46:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:46:48,689 INFO L495 AbstractCegarLoop]: Abstraction has 52061 states and 78477 transitions. [2022-12-13 15:46:48,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 13 states have internal predecessors, (122), 4 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) [2022-12-13 15:46:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 52061 states and 78477 transitions. [2022-12-13 15:46:48,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-12-13 15:46:48,716 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:46:48,716 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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] [2022-12-13 15:46:48,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 15:46:48,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 15:46:48,918 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:46:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:46:48,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1050237112, now seen corresponding path program 1 times [2022-12-13 15:46:48,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:46:48,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280641442] [2022-12-13 15:46:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:46:48,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:46:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:49,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:46:49,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280641442] [2022-12-13 15:46:49,014 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:46:49,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344144390] [2022-12-13 15:46:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:46:49,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:46:49,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:46:49,015 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:46:49,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 15:46:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:49,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:46:49,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:46:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-12-13 15:46:49,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:46:49,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344144390] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:46:49,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:46:49,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:46:49,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628563425] [2022-12-13 15:46:49,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:46:49,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:46:49,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:46:49,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:46:49,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:46:49,584 INFO L87 Difference]: Start difference. First operand 52061 states and 78477 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 15:46:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:46:52,074 INFO L93 Difference]: Finished difference Result 152139 states and 228965 transitions. [2022-12-13 15:46:52,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:46:52,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 204 [2022-12-13 15:46:52,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:46:52,508 INFO L225 Difference]: With dead ends: 152139 [2022-12-13 15:46:52,508 INFO L226 Difference]: Without dead ends: 100100 [2022-12-13 15:46:52,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:46:52,731 INFO L413 NwaCegarLoop]: 2889 mSDtfsCounter, 2241 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2241 SdHoareTripleChecker+Valid, 5211 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:46:52,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2241 Valid, 5211 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:46:52,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100100 states. [2022-12-13 15:46:56,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100100 to 99329. [2022-12-13 15:46:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99329 states, 62956 states have (on average 1.3390622021729461) internal successors, (84302), 65986 states have internal predecessors, (84302), 31875 states have call successors, (31875), 4304 states have call predecessors, (31875), 4497 states have return successors, (32610), 30762 states have call predecessors, (32610), 31874 states have call successors, (32610) [2022-12-13 15:46:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99329 states to 99329 states and 148787 transitions. [2022-12-13 15:46:57,022 INFO L78 Accepts]: Start accepts. Automaton has 99329 states and 148787 transitions. Word has length 204 [2022-12-13 15:46:57,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:46:57,023 INFO L495 AbstractCegarLoop]: Abstraction has 99329 states and 148787 transitions. [2022-12-13 15:46:57,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 15:46:57,023 INFO L276 IsEmpty]: Start isEmpty. Operand 99329 states and 148787 transitions. [2022-12-13 15:46:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-12-13 15:46:57,042 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:46:57,043 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:46:57,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 15:46:57,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 15:46:57,244 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:46:57,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:46:57,245 INFO L85 PathProgramCache]: Analyzing trace with hash 427669720, now seen corresponding path program 1 times [2022-12-13 15:46:57,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:46:57,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155627700] [2022-12-13 15:46:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:46:57,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:46:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:57,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:46:57,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155627700] [2022-12-13 15:46:57,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:46:57,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7922302] [2022-12-13 15:46:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:46:57,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:46:57,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:46:57,333 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:46:57,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 15:46:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:46:57,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 2341 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 15:46:57,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:46:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-12-13 15:46:57,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:46:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-12-13 15:46:58,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7922302] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:46:58,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:46:58,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2022-12-13 15:46:58,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042821420] [2022-12-13 15:46:58,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:46:58,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:46:58,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:46:58,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:46:58,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:46:58,182 INFO L87 Difference]: Start difference. First operand 99329 states and 148787 transitions. Second operand has 16 states, 16 states have (on average 7.6875) internal successors, (123), 13 states have internal predecessors, (123), 4 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) [2022-12-13 15:47:09,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:47:09,958 INFO L93 Difference]: Finished difference Result 248477 states and 372071 transitions. [2022-12-13 15:47:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 15:47:09,959 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 13 states have internal predecessors, (123), 4 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) Word has length 204 [2022-12-13 15:47:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:47:10,592 INFO L225 Difference]: With dead ends: 248477 [2022-12-13 15:47:10,592 INFO L226 Difference]: Without dead ends: 149170 [2022-12-13 15:47:11,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 386 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=476, Invalid=1974, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 15:47:11,049 INFO L413 NwaCegarLoop]: 4616 mSDtfsCounter, 7805 mSDsluCounter, 34674 mSDsCounter, 0 mSdLazyCounter, 9787 mSolverCounterSat, 2491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7819 SdHoareTripleChecker+Valid, 39290 SdHoareTripleChecker+Invalid, 12278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2491 IncrementalHoareTripleChecker+Valid, 9787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-12-13 15:47:11,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7819 Valid, 39290 Invalid, 12278 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2491 Valid, 9787 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-12-13 15:47:11,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149170 states. [2022-12-13 15:47:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149170 to 74617. [2022-12-13 15:47:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74617 states, 47298 states have (on average 1.338872679605903) internal successors, (63326), 49542 states have internal predecessors, (63326), 23957 states have call successors, (23957), 3230 states have call predecessors, (23957), 3361 states have return successors, (24488), 23140 states have call predecessors, (24488), 23956 states have call successors, (24488) [2022-12-13 15:47:15,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74617 states to 74617 states and 111771 transitions. [2022-12-13 15:47:15,858 INFO L78 Accepts]: Start accepts. Automaton has 74617 states and 111771 transitions. Word has length 204 [2022-12-13 15:47:15,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:47:15,859 INFO L495 AbstractCegarLoop]: Abstraction has 74617 states and 111771 transitions. [2022-12-13 15:47:15,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 13 states have internal predecessors, (123), 4 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) [2022-12-13 15:47:15,859 INFO L276 IsEmpty]: Start isEmpty. Operand 74617 states and 111771 transitions. [2022-12-13 15:47:15,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-12-13 15:47:15,875 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:47:15,875 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-13 15:47:15,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-13 15:47:16,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:47:16,076 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:47:16,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:47:16,076 INFO L85 PathProgramCache]: Analyzing trace with hash 221879765, now seen corresponding path program 1 times [2022-12-13 15:47:16,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:47:16,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579818246] [2022-12-13 15:47:16,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:47:16,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:47:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:16,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:47:16,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579818246] [2022-12-13 15:47:16,182 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:47:16,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597423137] [2022-12-13 15:47:16,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:47:16,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:47:16,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:47:16,183 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:47:16,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 15:47:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:16,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 2522 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:47:16,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:47:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-12-13 15:47:16,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:47:16,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597423137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:47:16,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:47:16,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:47:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130028928] [2022-12-13 15:47:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:47:16,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:47:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:47:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:47:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:47:16,669 INFO L87 Difference]: Start difference. First operand 74617 states and 111771 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 15:47:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:47:18,733 INFO L93 Difference]: Finished difference Result 136986 states and 204599 transitions. [2022-12-13 15:47:18,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:47:18,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 207 [2022-12-13 15:47:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:47:18,951 INFO L225 Difference]: With dead ends: 136986 [2022-12-13 15:47:18,951 INFO L226 Difference]: Without dead ends: 62391 [2022-12-13 15:47:19,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:47:19,219 INFO L413 NwaCegarLoop]: 2204 mSDtfsCounter, 2211 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:47:19,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2211 Valid, 2204 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:47:19,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62391 states. [2022-12-13 15:47:21,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62391 to 62391. [2022-12-13 15:47:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62391 states, 40216 states have (on average 1.3253431470061667) internal successors, (53300), 42102 states have internal predecessors, (53300), 19205 states have call successors, (19205), 2882 states have call predecessors, (19205), 2969 states have return successors, (19440), 18580 states have call predecessors, (19440), 19204 states have call successors, (19440) [2022-12-13 15:47:22,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62391 states to 62391 states and 91945 transitions. [2022-12-13 15:47:22,088 INFO L78 Accepts]: Start accepts. Automaton has 62391 states and 91945 transitions. Word has length 207 [2022-12-13 15:47:22,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:47:22,088 INFO L495 AbstractCegarLoop]: Abstraction has 62391 states and 91945 transitions. [2022-12-13 15:47:22,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 15:47:22,088 INFO L276 IsEmpty]: Start isEmpty. Operand 62391 states and 91945 transitions. [2022-12-13 15:47:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2022-12-13 15:47:22,117 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:47:22,117 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 10, 10, 10, 10, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:47:22,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-13 15:47:22,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:47:22,319 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:47:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:47:22,321 INFO L85 PathProgramCache]: Analyzing trace with hash -871257736, now seen corresponding path program 1 times [2022-12-13 15:47:22,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:47:22,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487437137] [2022-12-13 15:47:22,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:47:22,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:47:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:22,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:47:22,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487437137] [2022-12-13 15:47:22,502 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:47:22,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062609270] [2022-12-13 15:47:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:47:22,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:47:22,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:47:22,504 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:47:22,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 15:47:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:23,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 4816 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:47:23,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:47:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 867 proven. 0 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2022-12-13 15:47:23,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:47:23,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062609270] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:47:23,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:47:23,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:47:23,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264958134] [2022-12-13 15:47:23,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:47:23,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:47:23,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:47:23,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:47:23,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:47:23,462 INFO L87 Difference]: Start difference. First operand 62391 states and 91945 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 2 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2022-12-13 15:47:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:47:25,322 INFO L93 Difference]: Finished difference Result 124808 states and 184193 transitions. [2022-12-13 15:47:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:47:25,323 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), 2 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 760 [2022-12-13 15:47:25,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:47:25,524 INFO L225 Difference]: With dead ends: 124808 [2022-12-13 15:47:25,524 INFO L226 Difference]: Without dead ends: 62439 [2022-12-13 15:47:25,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:47:25,675 INFO L413 NwaCegarLoop]: 2224 mSDtfsCounter, 0 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4444 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 [2022-12-13 15:47:25,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4444 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:47:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62439 states. [2022-12-13 15:47:28,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62439 to 62439. [2022-12-13 15:47:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62439 states, 40264 states have (on average 1.3249552950526524) internal successors, (53348), 42150 states have internal predecessors, (53348), 19205 states have call successors, (19205), 2882 states have call predecessors, (19205), 2969 states have return successors, (19440), 18580 states have call predecessors, (19440), 19204 states have call successors, (19440) [2022-12-13 15:47:28,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62439 states to 62439 states and 91993 transitions. [2022-12-13 15:47:28,505 INFO L78 Accepts]: Start accepts. Automaton has 62439 states and 91993 transitions. Word has length 760 [2022-12-13 15:47:28,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:47:28,506 INFO L495 AbstractCegarLoop]: Abstraction has 62439 states and 91993 transitions. [2022-12-13 15:47:28,506 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), 2 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2022-12-13 15:47:28,506 INFO L276 IsEmpty]: Start isEmpty. Operand 62439 states and 91993 transitions. [2022-12-13 15:47:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2022-12-13 15:47:28,537 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:47:28,538 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 10, 10, 10, 10, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:47:28,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-12-13 15:47:28,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 15:47:28,739 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:47:28,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:47:28,739 INFO L85 PathProgramCache]: Analyzing trace with hash -362478922, now seen corresponding path program 1 times [2022-12-13 15:47:28,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:47:28,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619907852] [2022-12-13 15:47:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:47:28,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:47:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:28,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:47:28,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619907852] [2022-12-13 15:47:28,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:47:28,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945593376] [2022-12-13 15:47:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:47:28,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:47:28,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:47:28,899 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:47:28,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 15:47:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:29,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 4819 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:47:29,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:47:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 4105 trivial. 0 not checked. [2022-12-13 15:47:29,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:47:29,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945593376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:47:29,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:47:29,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:47:29,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630393173] [2022-12-13 15:47:29,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:47:29,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:47:29,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:47:29,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:47:29,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:47:29,734 INFO L87 Difference]: Start difference. First operand 62439 states and 91993 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 2 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2022-12-13 15:47:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:47:32,481 INFO L93 Difference]: Finished difference Result 164753 states and 241562 transitions. [2022-12-13 15:47:32,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:47:32,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 2 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 760 [2022-12-13 15:47:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:47:32,900 INFO L225 Difference]: With dead ends: 164753 [2022-12-13 15:47:32,900 INFO L226 Difference]: Without dead ends: 102336 [2022-12-13 15:47:33,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:47:33,061 INFO L413 NwaCegarLoop]: 3668 mSDtfsCounter, 1859 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 5852 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:47:33,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 5852 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:47:33,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102336 states. [2022-12-13 15:47:37,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102336 to 100061. [2022-12-13 15:47:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100061 states, 65017 states have (on average 1.3229463063506468) internal successors, (86014), 67977 states have internal predecessors, (86014), 30058 states have call successors, (30058), 4817 states have call predecessors, (30058), 4985 states have return successors, (30517), 29109 states have call predecessors, (30517), 30057 states have call successors, (30517) [2022-12-13 15:47:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100061 states to 100061 states and 146589 transitions. [2022-12-13 15:47:37,905 INFO L78 Accepts]: Start accepts. Automaton has 100061 states and 146589 transitions. Word has length 760 [2022-12-13 15:47:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:47:37,905 INFO L495 AbstractCegarLoop]: Abstraction has 100061 states and 146589 transitions. [2022-12-13 15:47:37,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 2 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2022-12-13 15:47:37,905 INFO L276 IsEmpty]: Start isEmpty. Operand 100061 states and 146589 transitions. [2022-12-13 15:47:37,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2022-12-13 15:47:37,951 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:47:37,951 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 10, 10, 10, 10, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:47:37,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-13 15:47:38,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 15:47:38,153 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:47:38,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:47:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1092202357, now seen corresponding path program 1 times [2022-12-13 15:47:38,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:47:38,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155284432] [2022-12-13 15:47:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:47:38,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:47:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:38,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:47:38,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155284432] [2022-12-13 15:47:38,434 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:47:38,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655818881] [2022-12-13 15:47:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:47:38,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:47:38,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:47:38,436 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:47:38,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 15:47:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:39,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 4993 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:47:39,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:47:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4281 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 3996 trivial. 0 not checked. [2022-12-13 15:47:39,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:47:39,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655818881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:47:39,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:47:39,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:47:39,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469956497] [2022-12-13 15:47:39,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:47:39,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:47:39,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:47:39,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:47:39,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:47:39,231 INFO L87 Difference]: Start difference. First operand 100061 states and 146589 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 2 states have call successors, (117), 2 states have call predecessors, (117), 2 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-12-13 15:47:42,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:47:42,424 INFO L93 Difference]: Finished difference Result 200226 states and 293372 transitions. [2022-12-13 15:47:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:47:42,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 2 states have call successors, (117), 2 states have call predecessors, (117), 2 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) Word has length 793 [2022-12-13 15:47:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:47:42,846 INFO L225 Difference]: With dead ends: 200226 [2022-12-13 15:47:42,846 INFO L226 Difference]: Without dead ends: 100205 [2022-12-13 15:47:43,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:47:43,107 INFO L413 NwaCegarLoop]: 2224 mSDtfsCounter, 1 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4442 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 [2022-12-13 15:47:43,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4442 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:47:43,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100205 states. [2022-12-13 15:47:47,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100205 to 100109. [2022-12-13 15:47:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100109 states, 65065 states have (on average 1.3227080611695996) internal successors, (86062), 68025 states have internal predecessors, (86062), 30058 states have call successors, (30058), 4817 states have call predecessors, (30058), 4985 states have return successors, (30517), 29109 states have call predecessors, (30517), 30057 states have call successors, (30517) [2022-12-13 15:47:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100109 states to 100109 states and 146637 transitions. [2022-12-13 15:47:47,904 INFO L78 Accepts]: Start accepts. Automaton has 100109 states and 146637 transitions. Word has length 793 [2022-12-13 15:47:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:47:47,905 INFO L495 AbstractCegarLoop]: Abstraction has 100109 states and 146637 transitions. [2022-12-13 15:47:47,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 2 states have call successors, (117), 2 states have call predecessors, (117), 2 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-12-13 15:47:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 100109 states and 146637 transitions. [2022-12-13 15:47:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2022-12-13 15:47:47,949 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:47:47,950 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 11, 11, 10, 10, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:47:47,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-13 15:47:48,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 15:47:48,151 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:47:48,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:47:48,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1844197063, now seen corresponding path program 1 times [2022-12-13 15:47:48,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:47:48,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063217887] [2022-12-13 15:47:48,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:47:48,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:47:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:48,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:47:48,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063217887] [2022-12-13 15:47:48,337 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:47:48,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360860560] [2022-12-13 15:47:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:47:48,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:47:48,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:47:48,338 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:47:48,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 15:47:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:49,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 5021 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:47:49,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:47:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4312 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 3838 trivial. 0 not checked. [2022-12-13 15:47:49,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:47:49,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360860560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:47:49,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:47:49,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:47:49,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607499957] [2022-12-13 15:47:49,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:47:49,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:47:49,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:47:49,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:47:49,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:47:49,260 INFO L87 Difference]: Start difference. First operand 100109 states and 146637 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-12-13 15:47:52,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:47:52,728 INFO L93 Difference]: Finished difference Result 200514 states and 293756 transitions. [2022-12-13 15:47:52,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:47:52,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 799 [2022-12-13 15:47:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:47:53,166 INFO L225 Difference]: With dead ends: 200514 [2022-12-13 15:47:53,166 INFO L226 Difference]: Without dead ends: 100445 [2022-12-13 15:47:53,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 797 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:47:53,427 INFO L413 NwaCegarLoop]: 2223 mSDtfsCounter, 3 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4437 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:47:53,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4437 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:47:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100445 states. [2022-12-13 15:47:57,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100445 to 100205. [2022-12-13 15:47:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100205 states, 65161 states have (on average 1.3222326238087199) internal successors, (86158), 68121 states have internal predecessors, (86158), 30058 states have call successors, (30058), 4817 states have call predecessors, (30058), 4985 states have return successors, (30517), 29109 states have call predecessors, (30517), 30057 states have call successors, (30517) [2022-12-13 15:47:57,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100205 states to 100205 states and 146733 transitions. [2022-12-13 15:47:57,835 INFO L78 Accepts]: Start accepts. Automaton has 100205 states and 146733 transitions. Word has length 799 [2022-12-13 15:47:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:47:57,835 INFO L495 AbstractCegarLoop]: Abstraction has 100205 states and 146733 transitions. [2022-12-13 15:47:57,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-12-13 15:47:57,836 INFO L276 IsEmpty]: Start isEmpty. Operand 100205 states and 146733 transitions. [2022-12-13 15:47:57,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2022-12-13 15:47:57,881 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:47:57,881 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 13, 13, 10, 10, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:47:57,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 15:47:58,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:47:58,083 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:47:58,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:47:58,085 INFO L85 PathProgramCache]: Analyzing trace with hash -847998242, now seen corresponding path program 1 times [2022-12-13 15:47:58,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:47:58,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792219269] [2022-12-13 15:47:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:47:58,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:47:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:58,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:47:58,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792219269] [2022-12-13 15:47:58,283 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:47:58,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853393302] [2022-12-13 15:47:58,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:47:58,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:47:58,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:47:58,284 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:47:58,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 15:47:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:47:59,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 5069 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:47:59,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:47:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4383 backedges. 909 proven. 0 refuted. 0 times theorem prover too weak. 3474 trivial. 0 not checked. [2022-12-13 15:47:59,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:47:59,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853393302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:47:59,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:47:59,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:47:59,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031019313] [2022-12-13 15:47:59,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:47:59,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:47:59,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:47:59,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:47:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:47:59,239 INFO L87 Difference]: Start difference. First operand 100205 states and 146733 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2022-12-13 15:48:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:48:02,779 INFO L93 Difference]: Finished difference Result 200802 states and 294660 transitions. [2022-12-13 15:48:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:48:02,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) Word has length 812 [2022-12-13 15:48:02,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:48:03,141 INFO L225 Difference]: With dead ends: 200802 [2022-12-13 15:48:03,141 INFO L226 Difference]: Without dead ends: 100637 [2022-12-13 15:48:03,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:48:03,444 INFO L413 NwaCegarLoop]: 2224 mSDtfsCounter, 4 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4444 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:48:03,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4444 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:48:03,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100637 states. [2022-12-13 15:48:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100637 to 100277. [2022-12-13 15:48:07,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100277 states, 65233 states have (on average 1.3218769641132555) internal successors, (86230), 68193 states have internal predecessors, (86230), 30058 states have call successors, (30058), 4817 states have call predecessors, (30058), 4985 states have return successors, (30517), 29109 states have call predecessors, (30517), 30057 states have call successors, (30517) [2022-12-13 15:48:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100277 states to 100277 states and 146805 transitions. [2022-12-13 15:48:08,238 INFO L78 Accepts]: Start accepts. Automaton has 100277 states and 146805 transitions. Word has length 812 [2022-12-13 15:48:08,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:48:08,239 INFO L495 AbstractCegarLoop]: Abstraction has 100277 states and 146805 transitions. [2022-12-13 15:48:08,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2022-12-13 15:48:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand 100277 states and 146805 transitions. [2022-12-13 15:48:08,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2022-12-13 15:48:08,285 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:48:08,286 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 15, 15, 10, 10, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:48:08,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 15:48:08,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 15:48:08,487 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:48:08,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:08,488 INFO L85 PathProgramCache]: Analyzing trace with hash -200834212, now seen corresponding path program 1 times [2022-12-13 15:48:08,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:08,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901113388] [2022-12-13 15:48:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:08,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:08,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:08,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901113388] [2022-12-13 15:48:08,667 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:48:08,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612602994] [2022-12-13 15:48:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:08,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:48:08,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:48:08,668 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:48:08,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 15:48:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:09,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 5099 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:48:09,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:48:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4467 backedges. 1626 proven. 0 refuted. 0 times theorem prover too weak. 2841 trivial. 0 not checked. [2022-12-13 15:48:09,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:48:09,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612602994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:09,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:48:09,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:48:09,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341454165] [2022-12-13 15:48:09,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:09,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:48:09,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:09,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:48:09,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:48:09,668 INFO L87 Difference]: Start difference. First operand 100277 states and 146805 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 2 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2022-12-13 15:48:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:48:12,999 INFO L93 Difference]: Finished difference Result 201018 states and 294780 transitions. [2022-12-13 15:48:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:48:13,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 2 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) Word has length 824 [2022-12-13 15:48:13,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:48:13,369 INFO L225 Difference]: With dead ends: 201018 [2022-12-13 15:48:13,369 INFO L226 Difference]: Without dead ends: 100781 [2022-12-13 15:48:13,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 823 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:48:13,640 INFO L413 NwaCegarLoop]: 2222 mSDtfsCounter, 3 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:48:13,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4436 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:48:13,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100781 states. [2022-12-13 15:48:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100781 to 100421. [2022-12-13 15:48:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100421 states, 65377 states have (on average 1.321167994860578) internal successors, (86374), 68337 states have internal predecessors, (86374), 30058 states have call successors, (30058), 4817 states have call predecessors, (30058), 4985 states have return successors, (30517), 29109 states have call predecessors, (30517), 30057 states have call successors, (30517) [2022-12-13 15:48:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100421 states to 100421 states and 146949 transitions. [2022-12-13 15:48:18,188 INFO L78 Accepts]: Start accepts. Automaton has 100421 states and 146949 transitions. Word has length 824 [2022-12-13 15:48:18,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:48:18,189 INFO L495 AbstractCegarLoop]: Abstraction has 100421 states and 146949 transitions. [2022-12-13 15:48:18,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 2 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2022-12-13 15:48:18,190 INFO L276 IsEmpty]: Start isEmpty. Operand 100421 states and 146949 transitions. [2022-12-13 15:48:18,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2022-12-13 15:48:18,235 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:48:18,235 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 15, 15, 11, 11, 10, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:48:18,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-12-13 15:48:18,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 15:48:18,437 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:48:18,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:18,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1310513300, now seen corresponding path program 1 times [2022-12-13 15:48:18,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:18,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993725081] [2022-12-13 15:48:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:18,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:18,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:18,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993725081] [2022-12-13 15:48:18,711 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:48:18,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941413384] [2022-12-13 15:48:18,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:18,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:48:18,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:48:18,713 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:48:18,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 15:48:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:19,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 5135 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:48:19,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:48:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4526 backedges. 591 proven. 0 refuted. 0 times theorem prover too weak. 3935 trivial. 0 not checked. [2022-12-13 15:48:19,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:48:19,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941413384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:19,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:48:19,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:48:19,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840908672] [2022-12-13 15:48:19,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:19,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:48:19,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:19,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:48:19,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:48:19,531 INFO L87 Difference]: Start difference. First operand 100421 states and 146949 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 3 states have call successors, (123), 3 states have call predecessors, (123), 3 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) [2022-12-13 15:48:23,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:48:23,993 INFO L93 Difference]: Finished difference Result 246385 states and 360394 transitions. [2022-12-13 15:48:23,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:48:23,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 3 states have call successors, (123), 3 states have call predecessors, (123), 3 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) Word has length 837 [2022-12-13 15:48:23,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:48:24,689 INFO L225 Difference]: With dead ends: 246385 [2022-12-13 15:48:24,689 INFO L226 Difference]: Without dead ends: 146004 [2022-12-13 15:48:25,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 835 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:48:25,056 INFO L413 NwaCegarLoop]: 2596 mSDtfsCounter, 1831 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 4674 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:48:25,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 4674 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:48:25,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146004 states. [2022-12-13 15:48:30,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146004 to 145305. [2022-12-13 15:48:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145305 states, 95055 states have (on average 1.3205617800220926) internal successors, (125526), 99183 states have internal predecessors, (125526), 42892 states have call successors, (42892), 7145 states have call predecessors, (42892), 7357 states have return successors, (43439), 41655 states have call predecessors, (43439), 42891 states have call successors, (43439) [2022-12-13 15:48:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145305 states to 145305 states and 211857 transitions. [2022-12-13 15:48:31,669 INFO L78 Accepts]: Start accepts. Automaton has 145305 states and 211857 transitions. Word has length 837 [2022-12-13 15:48:31,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:48:31,670 INFO L495 AbstractCegarLoop]: Abstraction has 145305 states and 211857 transitions. [2022-12-13 15:48:31,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 3 states have call successors, (123), 3 states have call predecessors, (123), 3 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) [2022-12-13 15:48:31,671 INFO L276 IsEmpty]: Start isEmpty. Operand 145305 states and 211857 transitions. [2022-12-13 15:48:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2022-12-13 15:48:31,735 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:48:31,736 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 15, 15, 11, 11, 10, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:48:31,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-13 15:48:31,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 15:48:31,937 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:48:31,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:31,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1904542762, now seen corresponding path program 1 times [2022-12-13 15:48:31,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:31,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498021100] [2022-12-13 15:48:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:31,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:32,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:32,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498021100] [2022-12-13 15:48:32,245 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:48:32,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225686065] [2022-12-13 15:48:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:32,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:48:32,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:48:32,247 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:48:32,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 15:48:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:33,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 5178 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:48:33,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:48:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4541 backedges. 331 proven. 1 refuted. 0 times theorem prover too weak. 4209 trivial. 0 not checked. [2022-12-13 15:48:33,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:48:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4541 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4526 trivial. 0 not checked. [2022-12-13 15:48:33,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225686065] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:48:33,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:48:33,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 15:48:33,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910301222] [2022-12-13 15:48:33,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:48:33,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:48:33,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:33,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:48:33,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:48:33,672 INFO L87 Difference]: Start difference. First operand 145305 states and 211857 transitions. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 4 states have call successors, (222), 2 states have call predecessors, (222), 2 states have return successors, (216), 4 states have call predecessors, (216), 4 states have call successors, (216) [2022-12-13 15:48:39,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:48:39,525 INFO L93 Difference]: Finished difference Result 291218 states and 424748 transitions. [2022-12-13 15:48:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:48:39,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 4 states have call successors, (222), 2 states have call predecessors, (222), 2 states have return successors, (216), 4 states have call predecessors, (216), 4 states have call successors, (216) Word has length 852 [2022-12-13 15:48:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:48:40,093 INFO L225 Difference]: With dead ends: 291218 [2022-12-13 15:48:40,093 INFO L226 Difference]: Without dead ends: 145953 [2022-12-13 15:48:40,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1702 GetRequests, 1698 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:48:40,473 INFO L413 NwaCegarLoop]: 2226 mSDtfsCounter, 2 mSDsluCounter, 4434 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6660 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:48:40,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6660 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:48:40,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145953 states. [2022-12-13 15:48:47,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145953 to 145953. [2022-12-13 15:48:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145953 states, 95487 states have (on average 1.3191115020892896) internal successors, (125958), 99615 states have internal predecessors, (125958), 43108 states have call successors, (43108), 7145 states have call predecessors, (43108), 7357 states have return successors, (43655), 41871 states have call predecessors, (43655), 43107 states have call successors, (43655) [2022-12-13 15:48:47,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145953 states to 145953 states and 212721 transitions. [2022-12-13 15:48:47,675 INFO L78 Accepts]: Start accepts. Automaton has 145953 states and 212721 transitions. Word has length 852 [2022-12-13 15:48:47,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:48:47,675 INFO L495 AbstractCegarLoop]: Abstraction has 145953 states and 212721 transitions. [2022-12-13 15:48:47,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 4 states have call successors, (222), 2 states have call predecessors, (222), 2 states have return successors, (216), 4 states have call predecessors, (216), 4 states have call successors, (216) [2022-12-13 15:48:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 145953 states and 212721 transitions. [2022-12-13 15:48:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2022-12-13 15:48:47,735 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:48:47,735 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 18, 18, 11, 11, 10, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:48:47,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-12-13 15:48:47,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 15:48:47,937 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:48:47,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:47,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1549369250, now seen corresponding path program 2 times [2022-12-13 15:48:47,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:47,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447928680] [2022-12-13 15:48:47,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:47,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:48,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:48,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447928680] [2022-12-13 15:48:48,150 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:48:48,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595222388] [2022-12-13 15:48:48,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:48:48,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:48:48,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:48:48,151 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:48:48,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 15:48:49,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:48:49,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:48:49,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 5262 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:48:49,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:48:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4706 backedges. 640 proven. 1 refuted. 0 times theorem prover too weak. 4065 trivial. 0 not checked. [2022-12-13 15:48:49,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:48:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4706 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4691 trivial. 0 not checked. [2022-12-13 15:48:49,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595222388] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:48:49,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:48:49,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 15:48:49,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574793948] [2022-12-13 15:48:49,550 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:48:49,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:48:49,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:49,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:48:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:48:49,553 INFO L87 Difference]: Start difference. First operand 145953 states and 212721 transitions. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 4 states have call successors, (219), 2 states have call predecessors, (219), 2 states have return successors, (213), 4 states have call predecessors, (213), 4 states have call successors, (213) [2022-12-13 15:48:55,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:48:55,019 INFO L93 Difference]: Finished difference Result 316118 states and 462640 transitions. [2022-12-13 15:48:55,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:48:55,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 4 states have call successors, (219), 2 states have call predecessors, (219), 2 states have return successors, (213), 4 states have call predecessors, (213), 4 states have call successors, (213) Word has length 870 [2022-12-13 15:48:55,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:48:55,610 INFO L225 Difference]: With dead ends: 316118 [2022-12-13 15:48:55,610 INFO L226 Difference]: Without dead ends: 170205 [2022-12-13 15:48:55,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1738 GetRequests, 1734 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:48:55,998 INFO L413 NwaCegarLoop]: 2509 mSDtfsCounter, 362 mSDsluCounter, 7009 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 9518 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:48:55,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 9518 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 15:48:56,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170205 states. [2022-12-13 15:49:03,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170205 to 147177. [2022-12-13 15:49:03,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147177 states, 96351 states have (on average 1.316249961079802) internal successors, (126822), 100479 states have internal predecessors, (126822), 43468 states have call successors, (43468), 7145 states have call predecessors, (43468), 7357 states have return successors, (44015), 42231 states have call predecessors, (44015), 43467 states have call successors, (44015) [2022-12-13 15:49:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147177 states to 147177 states and 214305 transitions. [2022-12-13 15:49:04,417 INFO L78 Accepts]: Start accepts. Automaton has 147177 states and 214305 transitions. Word has length 870 [2022-12-13 15:49:04,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:49:04,417 INFO L495 AbstractCegarLoop]: Abstraction has 147177 states and 214305 transitions. [2022-12-13 15:49:04,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 4 states have call successors, (219), 2 states have call predecessors, (219), 2 states have return successors, (213), 4 states have call predecessors, (213), 4 states have call successors, (213) [2022-12-13 15:49:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand 147177 states and 214305 transitions. [2022-12-13 15:49:04,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2022-12-13 15:49:04,477 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:49:04,477 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 23, 23, 11, 11, 10, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:04,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-13 15:49:04,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 15:49:04,679 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:49:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:04,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1538452334, now seen corresponding path program 3 times [2022-12-13 15:49:04,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:04,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877115362] [2022-12-13 15:49:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:04,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:04,813 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:49:04,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676948857] [2022-12-13 15:49:04,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:49:04,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:04,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:04,814 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:04,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-13 15:49:05,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 15:49:05,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:49:05,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 2427 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:49:05,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:05,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 490 proven. 0 refuted. 0 times theorem prover too weak. 4551 trivial. 0 not checked. [2022-12-13 15:49:05,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:49:05,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:05,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877115362] [2022-12-13 15:49:05,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:49:05,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676948857] [2022-12-13 15:49:05,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676948857] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:49:05,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:49:05,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:49:05,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928625711] [2022-12-13 15:49:05,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:49:05,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:49:05,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:05,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:49:05,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:49:05,822 INFO L87 Difference]: Start difference. First operand 147177 states and 214305 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-12-13 15:49:10,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:49:10,713 INFO L93 Difference]: Finished difference Result 295274 states and 430148 transitions. [2022-12-13 15:49:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:49:10,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 902 [2022-12-13 15:49:10,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:49:11,250 INFO L225 Difference]: With dead ends: 295274 [2022-12-13 15:49:11,250 INFO L226 Difference]: Without dead ends: 148137 [2022-12-13 15:49:11,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 899 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:49:11,633 INFO L413 NwaCegarLoop]: 2241 mSDtfsCounter, 27 mSDsluCounter, 4452 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6693 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:49:11,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6693 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:49:11,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148137 states. [2022-12-13 15:49:18,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148137 to 147273. [2022-12-13 15:49:18,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147273 states, 96447 states have (on average 1.315935176832872) internal successors, (126918), 100575 states have internal predecessors, (126918), 43468 states have call successors, (43468), 7145 states have call predecessors, (43468), 7357 states have return successors, (44015), 42231 states have call predecessors, (44015), 43467 states have call successors, (44015) [2022-12-13 15:49:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147273 states to 147273 states and 214401 transitions. [2022-12-13 15:49:19,088 INFO L78 Accepts]: Start accepts. Automaton has 147273 states and 214401 transitions. Word has length 902 [2022-12-13 15:49:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:49:19,089 INFO L495 AbstractCegarLoop]: Abstraction has 147273 states and 214401 transitions. [2022-12-13 15:49:19,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-12-13 15:49:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 147273 states and 214401 transitions. [2022-12-13 15:49:19,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2022-12-13 15:49:19,148 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:49:19,148 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 23, 23, 11, 11, 10, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:19,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-12-13 15:49:19,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:19,350 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:49:19,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:19,351 INFO L85 PathProgramCache]: Analyzing trace with hash 699418672, now seen corresponding path program 1 times [2022-12-13 15:49:19,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:19,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203381929] [2022-12-13 15:49:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:19,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:19,483 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:49:19,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500679757] [2022-12-13 15:49:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:19,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:19,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:19,485 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:19,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-13 15:49:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:20,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 5377 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:49:20,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 802 proven. 22 refuted. 0 times theorem prover too weak. 4217 trivial. 0 not checked. [2022-12-13 15:49:20,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:49:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 14 proven. 22 refuted. 0 times theorem prover too weak. 5005 trivial. 0 not checked. [2022-12-13 15:49:20,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:20,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203381929] [2022-12-13 15:49:20,981 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:49:20,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500679757] [2022-12-13 15:49:20,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500679757] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:49:20,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:49:20,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 15:49:20,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68520515] [2022-12-13 15:49:20,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:49:20,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:49:20,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:49:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:49:20,985 INFO L87 Difference]: Start difference. First operand 147273 states and 214401 transitions. Second operand has 9 states, 9 states have (on average 44.44444444444444) internal successors, (400), 9 states have internal predecessors, (400), 8 states have call successors, (223), 2 states have call predecessors, (223), 2 states have return successors, (217), 8 states have call predecessors, (217), 8 states have call successors, (217) [2022-12-13 15:49:26,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:49:26,887 INFO L93 Difference]: Finished difference Result 319046 states and 466432 transitions. [2022-12-13 15:49:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:49:26,888 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 44.44444444444444) internal successors, (400), 9 states have internal predecessors, (400), 8 states have call successors, (223), 2 states have call predecessors, (223), 2 states have return successors, (217), 8 states have call predecessors, (217), 8 states have call successors, (217) Word has length 902 [2022-12-13 15:49:26,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:49:27,479 INFO L225 Difference]: With dead ends: 319046 [2022-12-13 15:49:27,479 INFO L226 Difference]: Without dead ends: 171813 [2022-12-13 15:49:27,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1802 GetRequests, 1792 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:49:27,854 INFO L413 NwaCegarLoop]: 2517 mSDtfsCounter, 379 mSDsluCounter, 7016 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 9533 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:49:27,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 9533 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 15:49:27,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171813 states. [2022-12-13 15:49:35,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171813 to 148785. [2022-12-13 15:49:35,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148785 states, 97527 states have (on average 1.3124365560306377) internal successors, (127998), 101655 states have internal predecessors, (127998), 43900 states have call successors, (43900), 7145 states have call predecessors, (43900), 7357 states have return successors, (44447), 42663 states have call predecessors, (44447), 43899 states have call successors, (44447) [2022-12-13 15:49:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148785 states to 148785 states and 216345 transitions. [2022-12-13 15:49:36,212 INFO L78 Accepts]: Start accepts. Automaton has 148785 states and 216345 transitions. Word has length 902 [2022-12-13 15:49:36,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:49:36,213 INFO L495 AbstractCegarLoop]: Abstraction has 148785 states and 216345 transitions. [2022-12-13 15:49:36,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.44444444444444) internal successors, (400), 9 states have internal predecessors, (400), 8 states have call successors, (223), 2 states have call predecessors, (223), 2 states have return successors, (217), 8 states have call predecessors, (217), 8 states have call successors, (217) [2022-12-13 15:49:36,213 INFO L276 IsEmpty]: Start isEmpty. Operand 148785 states and 216345 transitions. [2022-12-13 15:49:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2022-12-13 15:49:36,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:49:36,272 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 29, 29, 11, 11, 10, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:36,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-12-13 15:49:36,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:36,473 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:49:36,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1843341243, now seen corresponding path program 2 times [2022-12-13 15:49:36,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:36,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130422630] [2022-12-13 15:49:36,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:36,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:36,620 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:49:36,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602874885] [2022-12-13 15:49:36,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:49:36,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:36,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:36,622 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:36,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-13 15:49:37,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:49:37,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:49:37,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 5521 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:49:37,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5599 backedges. 1786 proven. 1 refuted. 0 times theorem prover too weak. 3812 trivial. 0 not checked. [2022-12-13 15:49:37,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:49:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5599 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 5584 trivial. 0 not checked. [2022-12-13 15:49:38,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:38,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130422630] [2022-12-13 15:49:38,160 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:49:38,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602874885] [2022-12-13 15:49:38,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602874885] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:49:38,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:49:38,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 15:49:38,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852077472] [2022-12-13 15:49:38,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:49:38,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:49:38,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:38,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:49:38,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:49:38,163 INFO L87 Difference]: Start difference. First operand 148785 states and 216345 transitions. Second operand has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 4 states have call successors, (158), 2 states have call predecessors, (158), 2 states have return successors, (152), 4 states have call predecessors, (152), 4 states have call successors, (152) [2022-12-13 15:49:43,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:49:43,494 INFO L93 Difference]: Finished difference Result 299738 states and 436548 transitions. [2022-12-13 15:49:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:49:43,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 4 states have call successors, (158), 2 states have call predecessors, (158), 2 states have return successors, (152), 4 states have call predecessors, (152), 4 states have call successors, (152) Word has length 941 [2022-12-13 15:49:43,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:49:44,018 INFO L225 Difference]: With dead ends: 299738 [2022-12-13 15:49:44,019 INFO L226 Difference]: Without dead ends: 150993 [2022-12-13 15:49:44,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1880 GetRequests, 1876 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:49:44,405 INFO L413 NwaCegarLoop]: 2227 mSDtfsCounter, 9 mSDsluCounter, 6639 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 8866 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:49:44,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 8866 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:49:44,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150993 states. [2022-12-13 15:49:51,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150993 to 150801. [2022-12-13 15:49:51,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150801 states, 98967 states have (on average 1.3078905089575312) internal successors, (129438), 103095 states have internal predecessors, (129438), 44476 states have call successors, (44476), 7145 states have call predecessors, (44476), 7357 states have return successors, (45023), 43239 states have call predecessors, (45023), 44475 states have call successors, (45023) [2022-12-13 15:49:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150801 states to 150801 states and 218937 transitions. [2022-12-13 15:49:51,996 INFO L78 Accepts]: Start accepts. Automaton has 150801 states and 218937 transitions. Word has length 941 [2022-12-13 15:49:51,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:49:51,997 INFO L495 AbstractCegarLoop]: Abstraction has 150801 states and 218937 transitions. [2022-12-13 15:49:51,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 4 states have call successors, (158), 2 states have call predecessors, (158), 2 states have return successors, (152), 4 states have call predecessors, (152), 4 states have call successors, (152) [2022-12-13 15:49:51,997 INFO L276 IsEmpty]: Start isEmpty. Operand 150801 states and 218937 transitions. [2022-12-13 15:49:52,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2022-12-13 15:49:52,057 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:49:52,057 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 29, 29, 17, 17, 10, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:52,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-13 15:49:52,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:52,259 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:49:52,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:52,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1158027723, now seen corresponding path program 3 times [2022-12-13 15:49:52,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:52,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683211567] [2022-12-13 15:49:52,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:52,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:52,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:49:52,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40585793] [2022-12-13 15:49:52,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:49:52,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:52,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:52,400 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:52,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-13 15:49:53,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 15:49:53,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:49:53,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 2428 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 15:49:53,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5890 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 5787 trivial. 0 not checked. [2022-12-13 15:49:53,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:49:53,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:53,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683211567] [2022-12-13 15:49:53,326 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:49:53,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40585793] [2022-12-13 15:49:53,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40585793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:49:53,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:49:53,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:49:53,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871308202] [2022-12-13 15:49:53,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:49:53,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:49:53,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:53,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:49:53,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:49:53,328 INFO L87 Difference]: Start difference. First operand 150801 states and 218937 transitions. Second operand has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 2 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2022-12-13 15:50:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:50:03,012 INFO L93 Difference]: Finished difference Result 452323 states and 656503 transitions. [2022-12-13 15:50:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:50:03,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 2 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 980 [2022-12-13 15:50:03,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:50:04,400 INFO L225 Difference]: With dead ends: 452323 [2022-12-13 15:50:04,400 INFO L226 Difference]: Without dead ends: 300842 [2022-12-13 15:50:04,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 976 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:50:04,952 INFO L413 NwaCegarLoop]: 4413 mSDtfsCounter, 2196 mSDsluCounter, 11033 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 15446 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:50:04,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2196 Valid, 15446 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:50:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300842 states. [2022-12-13 15:50:15,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300842 to 150441. [2022-12-13 15:50:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150441 states, 98607 states have (on average 1.30609388785786) internal successors, (128790), 102735 states have internal predecessors, (128790), 44476 states have call successors, (44476), 7145 states have call predecessors, (44476), 7357 states have return successors, (45023), 43239 states have call predecessors, (45023), 44475 states have call successors, (45023) [2022-12-13 15:50:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150441 states to 150441 states and 218289 transitions. [2022-12-13 15:50:16,248 INFO L78 Accepts]: Start accepts. Automaton has 150441 states and 218289 transitions. Word has length 980 [2022-12-13 15:50:16,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:50:16,248 INFO L495 AbstractCegarLoop]: Abstraction has 150441 states and 218289 transitions. [2022-12-13 15:50:16,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 2 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2022-12-13 15:50:16,249 INFO L276 IsEmpty]: Start isEmpty. Operand 150441 states and 218289 transitions. [2022-12-13 15:50:16,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2022-12-13 15:50:16,309 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:50:16,310 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 29, 29, 17, 17, 10, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:50:16,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-12-13 15:50:16,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:50:16,511 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:50:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:16,513 INFO L85 PathProgramCache]: Analyzing trace with hash -812717385, now seen corresponding path program 1 times [2022-12-13 15:50:16,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:16,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784904586] [2022-12-13 15:50:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:16,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:16,655 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:50:16,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399480967] [2022-12-13 15:50:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:16,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:50:16,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:50:16,656 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:50:16,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-12-13 15:50:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:17,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 5628 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:50:17,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:50:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5890 backedges. 1912 proven. 28 refuted. 0 times theorem prover too weak. 3950 trivial. 0 not checked. [2022-12-13 15:50:17,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:50:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5890 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 5848 trivial. 0 not checked. [2022-12-13 15:50:18,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:18,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784904586] [2022-12-13 15:50:18,265 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:50:18,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399480967] [2022-12-13 15:50:18,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399480967] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:50:18,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:50:18,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-12-13 15:50:18,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970139430] [2022-12-13 15:50:18,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:50:18,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:50:18,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:18,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:50:18,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:50:18,269 INFO L87 Difference]: Start difference. First operand 150441 states and 218289 transitions. Second operand has 8 states, 8 states have (on average 42.875) internal successors, (343), 8 states have internal predecessors, (343), 7 states have call successors, (161), 2 states have call predecessors, (161), 2 states have return successors, (155), 7 states have call predecessors, (155), 7 states have call successors, (155) [2022-12-13 15:50:24,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:50:24,699 INFO L93 Difference]: Finished difference Result 302378 states and 439380 transitions. [2022-12-13 15:50:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:50:24,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 42.875) internal successors, (343), 8 states have internal predecessors, (343), 7 states have call successors, (161), 2 states have call predecessors, (161), 2 states have return successors, (155), 7 states have call predecessors, (155), 7 states have call successors, (155) Word has length 980 [2022-12-13 15:50:24,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:50:25,239 INFO L225 Difference]: With dead ends: 302378 [2022-12-13 15:50:25,239 INFO L226 Difference]: Without dead ends: 151977 [2022-12-13 15:50:25,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1958 GetRequests, 1948 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:50:25,680 INFO L413 NwaCegarLoop]: 2229 mSDtfsCounter, 11 mSDsluCounter, 6633 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 8862 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:50:25,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 8862 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:50:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151977 states. [2022-12-13 15:50:34,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151977 to 151785. [2022-12-13 15:50:34,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151785 states, 99567 states have (on average 1.3031426074904335) internal successors, (129750), 103695 states have internal predecessors, (129750), 44860 states have call successors, (44860), 7145 states have call predecessors, (44860), 7357 states have return successors, (45407), 43623 states have call predecessors, (45407), 44859 states have call successors, (45407) [2022-12-13 15:50:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151785 states to 151785 states and 220017 transitions. [2022-12-13 15:50:35,223 INFO L78 Accepts]: Start accepts. Automaton has 151785 states and 220017 transitions. Word has length 980 [2022-12-13 15:50:35,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:50:35,224 INFO L495 AbstractCegarLoop]: Abstraction has 151785 states and 220017 transitions. [2022-12-13 15:50:35,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 42.875) internal successors, (343), 8 states have internal predecessors, (343), 7 states have call successors, (161), 2 states have call predecessors, (161), 2 states have return successors, (155), 7 states have call predecessors, (155), 7 states have call successors, (155) [2022-12-13 15:50:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 151785 states and 220017 transitions. [2022-12-13 15:50:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2022-12-13 15:50:35,282 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:50:35,283 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 29, 29, 21, 21, 10, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:50:35,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-12-13 15:50:35,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:50:35,484 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:50:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2057337855, now seen corresponding path program 2 times [2022-12-13 15:50:35,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:35,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640764025] [2022-12-13 15:50:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:35,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:35,618 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:50:35,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993243418] [2022-12-13 15:50:35,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:50:35,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:50:35,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:50:35,620 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:50:35,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-12-13 15:50:36,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:50:36,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:50:36,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 5700 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 15:50:36,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:50:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6179 backedges. 1936 proven. 51 refuted. 0 times theorem prover too weak. 4192 trivial. 0 not checked. [2022-12-13 15:50:37,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:50:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6179 backedges. 14 proven. 51 refuted. 0 times theorem prover too weak. 6114 trivial. 0 not checked. [2022-12-13 15:50:37,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:37,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640764025] [2022-12-13 15:50:37,416 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:50:37,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993243418] [2022-12-13 15:50:37,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993243418] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:50:37,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:50:37,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2022-12-13 15:50:37,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843314441] [2022-12-13 15:50:37,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:50:37,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 15:50:37,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:37,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 15:50:37,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:50:37,418 INFO L87 Difference]: Start difference. First operand 151785 states and 220017 transitions. Second operand has 10 states, 10 states have (on average 34.3) internal successors, (343), 10 states have internal predecessors, (343), 9 states have call successors, (162), 2 states have call predecessors, (162), 2 states have return successors, (156), 9 states have call predecessors, (156), 9 states have call successors, (156) [2022-12-13 15:50:43,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:50:43,647 INFO L93 Difference]: Finished difference Result 304106 states and 441396 transitions. [2022-12-13 15:50:43,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:50:43,648 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 34.3) internal successors, (343), 10 states have internal predecessors, (343), 9 states have call successors, (162), 2 states have call predecessors, (162), 2 states have return successors, (156), 9 states have call predecessors, (156), 9 states have call successors, (156) Word has length 1006 [2022-12-13 15:50:43,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:50:44,227 INFO L225 Difference]: With dead ends: 304106 [2022-12-13 15:50:44,227 INFO L226 Difference]: Without dead ends: 152361 [2022-12-13 15:50:44,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2010 GetRequests, 1996 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:50:44,683 INFO L413 NwaCegarLoop]: 2229 mSDtfsCounter, 37 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 4439 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:50:44,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 4439 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:50:44,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152361 states. [2022-12-13 15:50:52,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152361 to 152361. [2022-12-13 15:50:52,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152361 states, 99951 states have (on average 1.3019779692049105) internal successors, (130134), 104079 states have internal predecessors, (130134), 45052 states have call successors, (45052), 7145 states have call predecessors, (45052), 7357 states have return successors, (45599), 43815 states have call predecessors, (45599), 45051 states have call successors, (45599) [2022-12-13 15:50:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152361 states to 152361 states and 220785 transitions. [2022-12-13 15:50:53,561 INFO L78 Accepts]: Start accepts. Automaton has 152361 states and 220785 transitions. Word has length 1006 [2022-12-13 15:50:53,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:50:53,562 INFO L495 AbstractCegarLoop]: Abstraction has 152361 states and 220785 transitions. [2022-12-13 15:50:53,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.3) internal successors, (343), 10 states have internal predecessors, (343), 9 states have call successors, (162), 2 states have call predecessors, (162), 2 states have return successors, (156), 9 states have call predecessors, (156), 9 states have call successors, (156) [2022-12-13 15:50:53,563 INFO L276 IsEmpty]: Start isEmpty. Operand 152361 states and 220785 transitions. [2022-12-13 15:50:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2022-12-13 15:50:53,621 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:50:53,621 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 29, 29, 23, 23, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:50:53,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-12-13 15:50:53,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 15:50:53,823 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:50:53,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1490298119, now seen corresponding path program 3 times [2022-12-13 15:50:53,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:53,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569856124] [2022-12-13 15:50:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:53,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:53,949 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:50:53,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579591617] [2022-12-13 15:50:53,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:50:53,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:50:53,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:50:53,950 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:50:53,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-12-13 15:50:54,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 15:50:54,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:50:54,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 2427 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:50:54,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:50:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6349 backedges. 490 proven. 0 refuted. 0 times theorem prover too weak. 5859 trivial. 0 not checked. [2022-12-13 15:50:54,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:50:54,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:54,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569856124] [2022-12-13 15:50:54,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:50:54,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579591617] [2022-12-13 15:50:54,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579591617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:50:54,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:50:54,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:50:54,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867568000] [2022-12-13 15:50:54,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:50:54,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:50:54,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:54,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:50:54,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:50:54,904 INFO L87 Difference]: Start difference. First operand 152361 states and 220785 transitions. Second operand has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-12-13 15:51:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:51:01,662 INFO L93 Difference]: Finished difference Result 305642 states and 443060 transitions. [2022-12-13 15:51:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:51:01,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 1018 [2022-12-13 15:51:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:51:02,222 INFO L225 Difference]: With dead ends: 305642 [2022-12-13 15:51:02,222 INFO L226 Difference]: Without dead ends: 153321 [2022-12-13 15:51:02,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1019 GetRequests, 1014 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:51:02,602 INFO L413 NwaCegarLoop]: 2237 mSDtfsCounter, 40 mSDsluCounter, 6646 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 8883 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:51:02,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 8883 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:51:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153321 states. [2022-12-13 15:51:10,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153321 to 152505. [2022-12-13 15:51:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152505 states, 100095 states have (on average 1.300664368849593) internal successors, (130190), 104223 states have internal predecessors, (130190), 45052 states have call successors, (45052), 7145 states have call predecessors, (45052), 7357 states have return successors, (45599), 43815 states have call predecessors, (45599), 45051 states have call successors, (45599) [2022-12-13 15:51:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152505 states to 152505 states and 220841 transitions. [2022-12-13 15:51:11,782 INFO L78 Accepts]: Start accepts. Automaton has 152505 states and 220841 transitions. Word has length 1018 [2022-12-13 15:51:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:51:11,783 INFO L495 AbstractCegarLoop]: Abstraction has 152505 states and 220841 transitions. [2022-12-13 15:51:11,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-12-13 15:51:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 152505 states and 220841 transitions. [2022-12-13 15:51:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1144 [2022-12-13 15:51:11,810 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:51:11,810 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 33, 33, 25, 25, 14, 14, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:51:11,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-12-13 15:51:12,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 15:51:12,012 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:51:12,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:51:12,013 INFO L85 PathProgramCache]: Analyzing trace with hash 249375327, now seen corresponding path program 1 times [2022-12-13 15:51:12,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:51:12,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108534818] [2022-12-13 15:51:12,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:51:12,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:51:12,155 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:51:12,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621851846] [2022-12-13 15:51:12,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:51:12,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:51:12,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:51:12,156 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:51:12,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-12-13 15:51:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:51:13,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 5957 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:51:13,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:51:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9302 backedges. 2994 proven. 0 refuted. 0 times theorem prover too weak. 6308 trivial. 0 not checked. [2022-12-13 15:51:13,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:51:13,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:51:13,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108534818] [2022-12-13 15:51:13,563 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:51:13,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621851846] [2022-12-13 15:51:13,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621851846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:51:13,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:51:13,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:51:13,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897523017] [2022-12-13 15:51:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:51:13,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:51:13,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:51:13,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:51:13,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:51:13,565 INFO L87 Difference]: Start difference. First operand 152505 states and 220841 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 2 states have call successors, (152), 2 states have call predecessors, (152), 2 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2022-12-13 15:51:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:51:22,182 INFO L93 Difference]: Finished difference Result 358165 states and 519486 transitions. [2022-12-13 15:51:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:51:22,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 2 states have call successors, (152), 2 states have call predecessors, (152), 2 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) Word has length 1143 [2022-12-13 15:51:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:51:23,113 INFO L225 Difference]: With dead ends: 358165 [2022-12-13 15:51:23,113 INFO L226 Difference]: Without dead ends: 205700 [2022-12-13 15:51:23,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:51:23,550 INFO L413 NwaCegarLoop]: 2723 mSDtfsCounter, 2009 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 4738 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:51:23,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2009 Valid, 4738 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:51:23,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205700 states. [2022-12-13 15:51:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205700 to 205001. [2022-12-13 15:51:35,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205001 states, 133859 states have (on average 1.3040438072897602) internal successors, (174558), 139543 states have internal predecessors, (174558), 61100 states have call successors, (61100), 9785 states have call predecessors, (61100), 10041 states have return successors, (61735), 59359 states have call predecessors, (61735), 61099 states have call successors, (61735) [2022-12-13 15:51:36,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205001 states to 205001 states and 297393 transitions. [2022-12-13 15:51:36,300 INFO L78 Accepts]: Start accepts. Automaton has 205001 states and 297393 transitions. Word has length 1143 [2022-12-13 15:51:36,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:51:36,301 INFO L495 AbstractCegarLoop]: Abstraction has 205001 states and 297393 transitions. [2022-12-13 15:51:36,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 2 states have call successors, (152), 2 states have call predecessors, (152), 2 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2022-12-13 15:51:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 205001 states and 297393 transitions. [2022-12-13 15:51:36,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1118 [2022-12-13 15:51:36,340 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:51:36,340 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 33, 33, 25, 25, 14, 14, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:51:36,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-12-13 15:51:36,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-13 15:51:36,542 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:51:36,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:51:36,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2089408296, now seen corresponding path program 1 times [2022-12-13 15:51:36,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:51:36,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882372137] [2022-12-13 15:51:36,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:51:36,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:51:36,883 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:51:36,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061544059] [2022-12-13 15:51:36,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:51:36,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:51:36,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:51:36,885 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:51:36,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-12-13 15:51:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:51:37,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 6064 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:51:37,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:51:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8255 backedges. 2177 proven. 0 refuted. 0 times theorem prover too weak. 6078 trivial. 0 not checked. [2022-12-13 15:51:37,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:51:37,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:51:37,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882372137] [2022-12-13 15:51:37,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:51:37,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061544059] [2022-12-13 15:51:37,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061544059] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:51:37,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:51:37,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:51:37,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671004688] [2022-12-13 15:51:37,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:51:37,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:51:37,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:51:37,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:51:37,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:51:37,981 INFO L87 Difference]: Start difference. First operand 205001 states and 297393 transitions. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 4 states have internal predecessors, (311), 2 states have call successors, (143), 2 states have call predecessors, (143), 3 states have return successors, (136), 3 states have call predecessors, (136), 2 states have call successors, (136) [2022-12-13 15:51:54,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:51:54,260 INFO L93 Difference]: Finished difference Result 557003 states and 806791 transitions. [2022-12-13 15:51:54,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:51:54,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 4 states have internal predecessors, (311), 2 states have call successors, (143), 2 states have call predecessors, (143), 3 states have return successors, (136), 3 states have call predecessors, (136), 2 states have call successors, (136) Word has length 1117 [2022-12-13 15:51:54,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:51:55,744 INFO L225 Difference]: With dead ends: 557003 [2022-12-13 15:51:55,745 INFO L226 Difference]: Without dead ends: 352042 [2022-12-13 15:51:56,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1118 GetRequests, 1113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:51:56,291 INFO L413 NwaCegarLoop]: 4226 mSDtfsCounter, 2007 mSDsluCounter, 10664 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 14890 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:51:56,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2008 Valid, 14890 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:51:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352042 states. [2022-12-13 15:52:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352042 to 205193. [2022-12-13 15:52:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205193 states, 134003 states have (on average 1.303717080960874) internal successors, (174702), 139687 states have internal predecessors, (174702), 61100 states have call successors, (61100), 9785 states have call predecessors, (61100), 10089 states have return successors, (61783), 59407 states have call predecessors, (61783), 61099 states have call successors, (61783) [2022-12-13 15:52:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205193 states to 205193 states and 297585 transitions. [2022-12-13 15:52:12,629 INFO L78 Accepts]: Start accepts. Automaton has 205193 states and 297585 transitions. Word has length 1117 [2022-12-13 15:52:12,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:52:12,630 INFO L495 AbstractCegarLoop]: Abstraction has 205193 states and 297585 transitions. [2022-12-13 15:52:12,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 4 states have internal predecessors, (311), 2 states have call successors, (143), 2 states have call predecessors, (143), 3 states have return successors, (136), 3 states have call predecessors, (136), 2 states have call successors, (136) [2022-12-13 15:52:12,630 INFO L276 IsEmpty]: Start isEmpty. Operand 205193 states and 297585 transitions. [2022-12-13 15:52:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1506 [2022-12-13 15:52:12,689 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:52:12,690 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 48, 48, 37, 37, 17, 17, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:52:12,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-12-13 15:52:12,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 15:52:12,891 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:52:12,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:52:12,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1921983887, now seen corresponding path program 1 times [2022-12-13 15:52:12,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:52:12,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652248945] [2022-12-13 15:52:12,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:12,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:52:13,050 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:52:13,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150825244] [2022-12-13 15:52:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:13,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:52:13,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:52:13,052 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:52:13,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-12-13 15:52:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:52:14,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 7228 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 15:52:14,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:52:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 20142 backedges. 5975 proven. 0 refuted. 0 times theorem prover too weak. 14167 trivial. 0 not checked. [2022-12-13 15:52:14,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:52:14,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:52:14,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652248945] [2022-12-13 15:52:14,522 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:52:14,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150825244] [2022-12-13 15:52:14,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150825244] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:52:14,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:52:14,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:52:14,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733973555] [2022-12-13 15:52:14,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:52:14,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:52:14,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:52:14,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:52:14,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:52:14,525 INFO L87 Difference]: Start difference. First operand 205193 states and 297585 transitions. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 3 states have call successors, (172), 2 states have call predecessors, (172), 3 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) [2022-12-13 15:52:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:52:25,622 INFO L93 Difference]: Finished difference Result 412266 states and 598572 transitions. [2022-12-13 15:52:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:52:25,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 3 states have call successors, (172), 2 states have call predecessors, (172), 3 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) Word has length 1505 [2022-12-13 15:52:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:52:26,570 INFO L225 Difference]: With dead ends: 412266 [2022-12-13 15:52:26,571 INFO L226 Difference]: Without dead ends: 206729 [2022-12-13 15:52:27,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1506 GetRequests, 1503 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:52:27,105 INFO L413 NwaCegarLoop]: 2230 mSDtfsCounter, 21 mSDsluCounter, 4414 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6644 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:52:27,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6644 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:52:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206729 states. [2022-12-13 15:52:40,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206729 to 206729. [2022-12-13 15:52:40,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206729 states, 134867 states have (on average 1.3030170464235136) internal successors, (175734), 140647 states have internal predecessors, (175734), 61676 states have call successors, (61676), 9785 states have call predecessors, (61676), 10185 states have return successors, (62455), 59983 states have call predecessors, (62455), 61675 states have call successors, (62455) [2022-12-13 15:52:41,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206729 states to 206729 states and 299865 transitions. [2022-12-13 15:52:41,377 INFO L78 Accepts]: Start accepts. Automaton has 206729 states and 299865 transitions. Word has length 1505 [2022-12-13 15:52:41,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:52:41,378 INFO L495 AbstractCegarLoop]: Abstraction has 206729 states and 299865 transitions. [2022-12-13 15:52:41,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 3 states have call successors, (172), 2 states have call predecessors, (172), 3 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) [2022-12-13 15:52:41,379 INFO L276 IsEmpty]: Start isEmpty. Operand 206729 states and 299865 transitions. [2022-12-13 15:52:41,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1506 [2022-12-13 15:52:41,439 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:52:41,440 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 48, 48, 37, 37, 17, 17, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:52:41,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-12-13 15:52:41,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 15:52:41,641 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:52:41,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:52:41,641 INFO L85 PathProgramCache]: Analyzing trace with hash -361074481, now seen corresponding path program 1 times [2022-12-13 15:52:41,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:52:41,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553219768] [2022-12-13 15:52:41,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:41,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:52:41,760 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:52:41,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057199536] [2022-12-13 15:52:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:41,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:52:41,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:52:41,762 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:52:41,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-12-13 15:52:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:52:43,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 7234 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 15:52:43,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:52:43,780 INFO L134 CoverageAnalysis]: Checked inductivity of 20142 backedges. 6348 proven. 823 refuted. 0 times theorem prover too weak. 12971 trivial. 0 not checked. [2022-12-13 15:52:43,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:52:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 20142 backedges. 13 proven. 446 refuted. 0 times theorem prover too weak. 19683 trivial. 0 not checked. [2022-12-13 15:52:44,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:52:44,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553219768] [2022-12-13 15:52:44,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:52:44,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057199536] [2022-12-13 15:52:44,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057199536] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:52:44,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:52:44,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2022-12-13 15:52:44,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033633469] [2022-12-13 15:52:44,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:52:44,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:52:44,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:52:44,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:52:44,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:52:44,521 INFO L87 Difference]: Start difference. First operand 206729 states and 299865 transitions. Second operand has 8 states, 8 states have (on average 61.75) internal successors, (494), 8 states have internal predecessors, (494), 8 states have call successors, (318), 3 states have call predecessors, (318), 6 states have return successors, (314), 8 states have call predecessors, (314), 8 states have call successors, (314) [2022-12-13 15:52:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:52:57,273 INFO L93 Difference]: Finished difference Result 414066 states and 602148 transitions. [2022-12-13 15:52:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:52:57,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 61.75) internal successors, (494), 8 states have internal predecessors, (494), 8 states have call successors, (318), 3 states have call predecessors, (318), 6 states have return successors, (314), 8 states have call predecessors, (314), 8 states have call successors, (314) Word has length 1505 [2022-12-13 15:52:57,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:52:58,152 INFO L225 Difference]: With dead ends: 414066 [2022-12-13 15:52:58,152 INFO L226 Difference]: Without dead ends: 207377 [2022-12-13 15:52:58,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3014 GetRequests, 3004 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:52:58,705 INFO L413 NwaCegarLoop]: 2204 mSDtfsCounter, 2077 mSDsluCounter, 6580 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2081 SdHoareTripleChecker+Valid, 8784 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:52:58,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2081 Valid, 8784 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:52:58,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207377 states. [2022-12-13 15:53:12,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207377 to 207377. [2022-12-13 15:53:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207377 states, 135347 states have (on average 1.3008784827147997) internal successors, (176070), 140983 states have internal predecessors, (176070), 61724 states have call successors, (61724), 9905 states have call predecessors, (61724), 10305 states have return successors, (62503), 60175 states have call predecessors, (62503), 61723 states have call successors, (62503) [2022-12-13 15:53:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207377 states to 207377 states and 300297 transitions. [2022-12-13 15:53:13,153 INFO L78 Accepts]: Start accepts. Automaton has 207377 states and 300297 transitions. Word has length 1505 [2022-12-13 15:53:13,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:53:13,154 INFO L495 AbstractCegarLoop]: Abstraction has 207377 states and 300297 transitions. [2022-12-13 15:53:13,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 61.75) internal successors, (494), 8 states have internal predecessors, (494), 8 states have call successors, (318), 3 states have call predecessors, (318), 6 states have return successors, (314), 8 states have call predecessors, (314), 8 states have call successors, (314) [2022-12-13 15:53:13,155 INFO L276 IsEmpty]: Start isEmpty. Operand 207377 states and 300297 transitions. [2022-12-13 15:53:13,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1494 [2022-12-13 15:53:13,209 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:53:13,210 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 48, 48, 37, 37, 17, 17, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:53:13,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-12-13 15:53:13,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-12-13 15:53:13,413 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:53:13,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:53:13,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1422434513, now seen corresponding path program 2 times [2022-12-13 15:53:13,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:53:13,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128742762] [2022-12-13 15:53:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:53:13,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:53:13,569 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:53:13,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465248043] [2022-12-13 15:53:13,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:53:13,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:53:13,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:53:13,571 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:53:13,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d188b1-89bc-45ea-9bf3-b78cda88830b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-12-13 15:53:15,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:53:15,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:53:15,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 7198 conjuncts, 135 conjunts are in the unsatisfiable core [2022-12-13 15:53:15,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:53:15,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 15:53:15,400 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:53:15,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-12-13 15:53:15,477 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-13 15:53:15,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 34 [2022-12-13 15:53:15,543 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-13 15:53:15,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 34 [2022-12-13 15:53:15,719 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-13 15:53:15,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 34 [2022-12-13 15:53:16,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 15:53:16,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-13 15:53:16,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 15:53:16,301 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 15:53:16,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-13 15:53:16,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-12-13 15:53:16,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2022-12-13 15:53:16,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2022-12-13 15:53:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 19542 backedges. 10310 proven. 647 refuted. 0 times theorem prover too weak. 8585 trivial. 0 not checked. [2022-12-13 15:53:33,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:53:35,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:53:35,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128742762] [2022-12-13 15:53:35,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:53:35,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465248043] [2022-12-13 15:53:35,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465248043] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:53:35,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:53:35,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2022-12-13 15:53:35,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2438979] [2022-12-13 15:53:35,189 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:53:35,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-13 15:53:35,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:53:35,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-13 15:53:35,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2248, Unknown=2, NotChecked=0, Total=2450 [2022-12-13 15:53:35,192 INFO L87 Difference]: Start difference. First operand 207377 states and 300297 transitions. Second operand has 40 states, 37 states have (on average 11.216216216216216) internal successors, (415), 33 states have internal predecessors, (415), 19 states have call successors, (218), 11 states have call predecessors, (218), 16 states have return successors, (211), 20 states have call predecessors, (211), 18 states have call successors, (211) [2022-12-13 15:53:38,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:53:40,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:53:43,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:53:45,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:53:49,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:53:51,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:53:54,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:53:56,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:53:58,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:00,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:02,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:04,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:06,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:09,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:13,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:15,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:17,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:21,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:23,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:25,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:27,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:29,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:31,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:33,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:35,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:37,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:39,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:41,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:43,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:45,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:47,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:49,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:51,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:53,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:55,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:54:58,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:55:00,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:55:04,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:55:06,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:55:08,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:55:12,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:55:14,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:55:16,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:55:18,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]