./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa --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 d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:36:29,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:36:29,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:36:29,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:36:29,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:36:29,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:36:29,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:36:29,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:36:29,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:36:29,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:36:29,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:36:29,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:36:29,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:36:29,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:36:29,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:36:29,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:36:29,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:36:29,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:36:29,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:36:29,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:36:29,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:36:29,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:36:29,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:36:29,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:36:29,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:36:29,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:36:29,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:36:29,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:36:29,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:36:29,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:36:29,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:36:29,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:36:29,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:36:29,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:36:29,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:36:29,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:36:29,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:36:29,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:36:29,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:36:29,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:36:29,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:36:29,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-07 00:36:29,822 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:36:29,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:36:29,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:36:29,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:36:29,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:36:29,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:36:29,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:36:29,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:36:29,824 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:36:29,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:36:29,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:36:29,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:36:29,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:36:29,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:36:29,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:36:29,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:36:29,825 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:36:29,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:36:29,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:36:29,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:36:29,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:36:29,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:36:29,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:36:29,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:36:29,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:36:29,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:36:29,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:36:29,826 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:36:29,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:36:29,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:36:29,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:36:29,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd [2021-12-07 00:36:30,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:36:30,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:36:30,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:36:30,023 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:36:30,023 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:36:30,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2021-12-07 00:36:30,069 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/data/a192016fe/6f4ae06bc9af41f084772a8c0b9f3c87/FLAGca9a1a51c [2021-12-07 00:36:30,664 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:36:30,664 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2021-12-07 00:36:30,693 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/data/a192016fe/6f4ae06bc9af41f084772a8c0b9f3c87/FLAGca9a1a51c [2021-12-07 00:36:31,111 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/data/a192016fe/6f4ae06bc9af41f084772a8c0b9f3c87 [2021-12-07 00:36:31,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:36:31,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:36:31,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:36:31,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:36:31,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:36:31,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:36:31" (1/1) ... [2021-12-07 00:36:31,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b786288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:36:31, skipping insertion in model container [2021-12-07 00:36:31,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:36:31" (1/1) ... [2021-12-07 00:36:31,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:36:31,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:36:31,392 WARN L230 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_0052d08a-0a17-4c18-9df5-1c25fef604b5/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4499,4512] [2021-12-07 00:36:31,397 WARN L230 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_0052d08a-0a17-4c18-9df5-1c25fef604b5/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4559,4572] [2021-12-07 00:36:32,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,055 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,055 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,056 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,066 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,067 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,407 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 00:36:32,408 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 00:36:32,409 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 00:36:32,410 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 00:36:32,411 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 00:36:32,411 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 00:36:32,412 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 00:36:32,413 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 00:36:32,413 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 00:36:32,413 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 00:36:32,548 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 00:36:32,612 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,612 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:36:32,717 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:36:32,727 WARN L230 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_0052d08a-0a17-4c18-9df5-1c25fef604b5/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4499,4512] [2021-12-07 00:36:32,727 WARN L230 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_0052d08a-0a17-4c18-9df5-1c25fef604b5/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4559,4572] [2021-12-07 00:36:32,751 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,751 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,756 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,757 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,757 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,758 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,779 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 00:36:32,780 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 00:36:32,780 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 00:36:32,781 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 00:36:32,781 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 00:36:32,782 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 00:36:32,782 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 00:36:32,782 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 00:36:32,783 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 00:36:32,783 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 00:36:32,797 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 00:36:32,833 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,833 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:36:32,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:36:33,029 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:36:33,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:36:33 WrapperNode [2021-12-07 00:36:33,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:36:33,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:36:33,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:36:33,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:36:33,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:36:33" (1/1) ... [2021-12-07 00:36:33,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:36:33" (1/1) ... [2021-12-07 00:36:33,159 INFO L137 Inliner]: procedures = 690, calls = 2735, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 812 [2021-12-07 00:36:33,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:36:33,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:36:33,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:36:33,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:36:33,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:36:33" (1/1) ... [2021-12-07 00:36:33,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:36:33" (1/1) ... [2021-12-07 00:36:33,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:36:33" (1/1) ... [2021-12-07 00:36:33,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:36:33" (1/1) ... [2021-12-07 00:36:33,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:36:33" (1/1) ... [2021-12-07 00:36:33,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:36:33" (1/1) ... [2021-12-07 00:36:33,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:36:33" (1/1) ... [2021-12-07 00:36:33,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:36:33,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:36:33,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:36:33,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:36:33,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:36:33" (1/1) ... [2021-12-07 00:36:33,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:36:33,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:36:33,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:36:33,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:36:33,274 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-12-07 00:36:33,275 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-12-07 00:36:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:36:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-07 00:36:33,275 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-07 00:36:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-12-07 00:36:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-07 00:36:33,275 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-07 00:36:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-07 00:36:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-07 00:36:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:36:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-07 00:36:33,275 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-07 00:36:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-07 00:36:33,275 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-07 00:36:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 00:36:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 00:36:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 00:36:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:36:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 00:36:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:36:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:36:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-07 00:36:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-07 00:36:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-07 00:36:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-07 00:36:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-07 00:36:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-07 00:36:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-07 00:36:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-07 00:36:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-07 00:36:33,277 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-07 00:36:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:36:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-07 00:36:33,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-07 00:36:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-07 00:36:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2021-12-07 00:36:33,277 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2021-12-07 00:36:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-07 00:36:33,277 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-07 00:36:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-07 00:36:33,277 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-07 00:36:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-07 00:36:33,277 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-07 00:36:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:36:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-12-07 00:36:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:36:33,435 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:36:33,436 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:36:33,551 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2021-12-07 00:36:34,360 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:36:34,368 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:36:34,369 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 00:36:34,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:36:34 BoogieIcfgContainer [2021-12-07 00:36:34,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:36:34,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:36:34,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:36:34,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:36:34,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:36:31" (1/3) ... [2021-12-07 00:36:34,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc614dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:36:34, skipping insertion in model container [2021-12-07 00:36:34,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:36:33" (2/3) ... [2021-12-07 00:36:34,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc614dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:36:34, skipping insertion in model container [2021-12-07 00:36:34,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:36:34" (3/3) ... [2021-12-07 00:36:34,380 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_c_str_harness.i [2021-12-07 00:36:34,385 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:36:34,385 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:36:34,437 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:36:34,444 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:36:34,444 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:36:34,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-12-07 00:36:34,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-07 00:36:34,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:34,471 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:36:34,471 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:34,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:34,475 INFO L85 PathProgramCache]: Analyzing trace with hash -555983859, now seen corresponding path program 1 times [2021-12-07 00:36:34,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:34,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615801913] [2021-12-07 00:36:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:34,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:34,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:36:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:34,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:36:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:34,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:34,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:34,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:36:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:34,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:36:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:34,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:36:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:36:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:34,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-07 00:36:35,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:35,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615801913] [2021-12-07 00:36:35,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615801913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:35,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:35,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:36:35,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209193810] [2021-12-07 00:36:35,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:35,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:36:35,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:35,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:36:35,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:36:35,028 INFO L87 Difference]: Start difference. First operand has 136 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-07 00:36:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:35,352 INFO L93 Difference]: Finished difference Result 283 states and 370 transitions. [2021-12-07 00:36:35,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:36:35,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 74 [2021-12-07 00:36:35,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:35,363 INFO L225 Difference]: With dead ends: 283 [2021-12-07 00:36:35,363 INFO L226 Difference]: Without dead ends: 147 [2021-12-07 00:36:35,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:36:35,369 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 99 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:35,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 198 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:36:35,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-12-07 00:36:35,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2021-12-07 00:36:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.15) internal successors, (92), 81 states have internal predecessors, (92), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-07 00:36:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 159 transitions. [2021-12-07 00:36:35,421 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 159 transitions. Word has length 74 [2021-12-07 00:36:35,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:35,422 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 159 transitions. [2021-12-07 00:36:35,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-07 00:36:35,422 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 159 transitions. [2021-12-07 00:36:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-07 00:36:35,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:35,426 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:36:35,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:36:35,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:35,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:35,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1001240943, now seen corresponding path program 1 times [2021-12-07 00:36:35,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:35,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374759482] [2021-12-07 00:36:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:35,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:36:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:36:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:36:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:36:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:36:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:36:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-07 00:36:35,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:35,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374759482] [2021-12-07 00:36:35,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374759482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:35,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:35,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:36:35,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762406640] [2021-12-07 00:36:35,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:35,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:36:35,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:35,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:36:35,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:36:35,776 INFO L87 Difference]: Start difference. First operand 130 states and 159 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-07 00:36:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:36,271 INFO L93 Difference]: Finished difference Result 196 states and 238 transitions. [2021-12-07 00:36:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:36:36,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 74 [2021-12-07 00:36:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:36,273 INFO L225 Difference]: With dead ends: 196 [2021-12-07 00:36:36,273 INFO L226 Difference]: Without dead ends: 152 [2021-12-07 00:36:36,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:36:36,275 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 101 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:36,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 470 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:36:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-07 00:36:36,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 135. [2021-12-07 00:36:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 85 states have internal predecessors, (96), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2021-12-07 00:36:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 164 transitions. [2021-12-07 00:36:36,297 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 164 transitions. Word has length 74 [2021-12-07 00:36:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:36,297 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 164 transitions. [2021-12-07 00:36:36,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-07 00:36:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 164 transitions. [2021-12-07 00:36:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-07 00:36:36,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:36,299 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:36:36,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:36:36,299 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:36,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:36,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1994019405, now seen corresponding path program 1 times [2021-12-07 00:36:36,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:36,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096334161] [2021-12-07 00:36:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:36,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:36:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:36:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:36:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:36:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:36:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:36:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-07 00:36:36,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:36,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096334161] [2021-12-07 00:36:36,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096334161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:36,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:36,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:36:36,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88667959] [2021-12-07 00:36:36,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:36,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:36:36,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:36,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:36:36,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:36:36,571 INFO L87 Difference]: Start difference. First operand 135 states and 164 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-07 00:36:37,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:37,225 INFO L93 Difference]: Finished difference Result 217 states and 267 transitions. [2021-12-07 00:36:37,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:36:37,225 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 80 [2021-12-07 00:36:37,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:37,228 INFO L225 Difference]: With dead ends: 217 [2021-12-07 00:36:37,228 INFO L226 Difference]: Without dead ends: 178 [2021-12-07 00:36:37,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:36:37,229 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 180 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:37,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 590 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:36:37,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-12-07 00:36:37,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 140. [2021-12-07 00:36:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 89 states have internal predecessors, (100), 34 states have call successors, (34), 15 states have call predecessors, (34), 17 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) [2021-12-07 00:36:37,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2021-12-07 00:36:37,245 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 80 [2021-12-07 00:36:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:37,245 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2021-12-07 00:36:37,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-07 00:36:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2021-12-07 00:36:37,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-07 00:36:37,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:37,247 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:36:37,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:36:37,247 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:37,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1920697878, now seen corresponding path program 1 times [2021-12-07 00:36:37,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:37,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340328855] [2021-12-07 00:36:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:37,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:36:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:36:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:36:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:36:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:36:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:36:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-07 00:36:37,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:37,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340328855] [2021-12-07 00:36:37,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340328855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:37,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:37,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-07 00:36:37,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776420937] [2021-12-07 00:36:37,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:37,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 00:36:37,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:37,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 00:36:37,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:36:37,652 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-07 00:36:38,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:38,607 INFO L93 Difference]: Finished difference Result 178 states and 219 transitions. [2021-12-07 00:36:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:36:38,608 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 82 [2021-12-07 00:36:38,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:38,609 INFO L225 Difference]: With dead ends: 178 [2021-12-07 00:36:38,610 INFO L226 Difference]: Without dead ends: 161 [2021-12-07 00:36:38,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2021-12-07 00:36:38,611 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 185 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:38,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 982 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 00:36:38,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-07 00:36:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 126. [2021-12-07 00:36:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 78 states have internal predecessors, (86), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-07 00:36:38,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 151 transitions. [2021-12-07 00:36:38,627 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 151 transitions. Word has length 82 [2021-12-07 00:36:38,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:38,628 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 151 transitions. [2021-12-07 00:36:38,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-07 00:36:38,628 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 151 transitions. [2021-12-07 00:36:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-07 00:36:38,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:38,631 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-12-07 00:36:38,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:36:38,631 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:38,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:38,632 INFO L85 PathProgramCache]: Analyzing trace with hash -870191708, now seen corresponding path program 1 times [2021-12-07 00:36:38,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:38,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034698034] [2021-12-07 00:36:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:38,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:36:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:36:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:36:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:36:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:36:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:36:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:36:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:36:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:36:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:36:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:36:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:36:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:36:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-07 00:36:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-07 00:36:38,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:38,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034698034] [2021-12-07 00:36:38,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034698034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:38,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:38,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:36:38,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161454585] [2021-12-07 00:36:38,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:38,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:36:38,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:38,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:36:38,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:36:38,989 INFO L87 Difference]: Start difference. First operand 126 states and 151 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-07 00:36:39,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:39,736 INFO L93 Difference]: Finished difference Result 206 states and 249 transitions. [2021-12-07 00:36:39,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:36:39,736 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 123 [2021-12-07 00:36:39,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:39,738 INFO L225 Difference]: With dead ends: 206 [2021-12-07 00:36:39,738 INFO L226 Difference]: Without dead ends: 151 [2021-12-07 00:36:39,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:36:39,739 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 159 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:39,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 570 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:36:39,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-07 00:36:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 131. [2021-12-07 00:36:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 82 states have internal predecessors, (90), 33 states have call successors, (33), 15 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2021-12-07 00:36:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2021-12-07 00:36:39,750 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 123 [2021-12-07 00:36:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:39,750 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2021-12-07 00:36:39,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-07 00:36:39,751 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2021-12-07 00:36:39,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-07 00:36:39,752 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:39,752 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-12-07 00:36:39,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:36:39,752 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:39,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:39,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1724885987, now seen corresponding path program 1 times [2021-12-07 00:36:39,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:39,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381375494] [2021-12-07 00:36:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:39,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:36:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:36:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:36:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:36:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:36:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:36:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:36:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:36:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:36:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:40,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:36:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:40,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:36:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:40,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:36:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:40,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:40,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 00:36:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:40,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:36:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:40,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-07 00:36:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-07 00:36:40,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:40,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381375494] [2021-12-07 00:36:40,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381375494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:40,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:40,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-07 00:36:40,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628385914] [2021-12-07 00:36:40,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:40,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:36:40,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:40,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:36:40,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:36:40,055 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-07 00:36:40,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:40,817 INFO L93 Difference]: Finished difference Result 212 states and 257 transitions. [2021-12-07 00:36:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 00:36:40,818 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 129 [2021-12-07 00:36:40,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:40,820 INFO L225 Difference]: With dead ends: 212 [2021-12-07 00:36:40,820 INFO L226 Difference]: Without dead ends: 143 [2021-12-07 00:36:40,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:36:40,822 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 276 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:40,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 572 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:36:40,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-07 00:36:40,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 124. [2021-12-07 00:36:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 77 states have internal predecessors, (83), 32 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-07 00:36:40,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 146 transitions. [2021-12-07 00:36:40,835 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 146 transitions. Word has length 129 [2021-12-07 00:36:40,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:40,836 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 146 transitions. [2021-12-07 00:36:40,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-07 00:36:40,836 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 146 transitions. [2021-12-07 00:36:40,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-07 00:36:40,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:40,838 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-07 00:36:40,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:36:40,838 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:40,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1745997560, now seen corresponding path program 1 times [2021-12-07 00:36:40,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:40,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051382926] [2021-12-07 00:36:40,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:40,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:36:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:36:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:36:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:36:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:36:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:36:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:36:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:36:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:36:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:36:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:36:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:36:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:36:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:36:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:41,648 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-07 00:36:41,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:41,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051382926] [2021-12-07 00:36:41,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051382926] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:41,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:41,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-07 00:36:41,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730798577] [2021-12-07 00:36:41,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:41,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-07 00:36:41,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:41,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-07 00:36:41,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-12-07 00:36:41,650 INFO L87 Difference]: Start difference. First operand 124 states and 146 transitions. Second operand has 22 states, 20 states have (on average 3.25) internal successors, (65), 17 states have internal predecessors, (65), 8 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-07 00:36:43,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:43,356 INFO L93 Difference]: Finished difference Result 190 states and 229 transitions. [2021-12-07 00:36:43,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-07 00:36:43,357 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.25) internal successors, (65), 17 states have internal predecessors, (65), 8 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) Word has length 134 [2021-12-07 00:36:43,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:43,359 INFO L225 Difference]: With dead ends: 190 [2021-12-07 00:36:43,359 INFO L226 Difference]: Without dead ends: 143 [2021-12-07 00:36:43,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2021-12-07 00:36:43,361 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 87 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:43,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 1386 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-07 00:36:43,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-07 00:36:43,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 137. [2021-12-07 00:36:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 88 states have internal predecessors, (93), 34 states have call successors, (34), 15 states have call predecessors, (34), 17 states have return successors, (35), 33 states have call predecessors, (35), 33 states have call successors, (35) [2021-12-07 00:36:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 162 transitions. [2021-12-07 00:36:43,375 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 162 transitions. Word has length 134 [2021-12-07 00:36:43,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:43,376 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 162 transitions. [2021-12-07 00:36:43,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.25) internal successors, (65), 17 states have internal predecessors, (65), 8 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-07 00:36:43,376 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 162 transitions. [2021-12-07 00:36:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-07 00:36:43,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:43,378 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-07 00:36:43,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:36:43,379 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:43,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:43,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1524709556, now seen corresponding path program 1 times [2021-12-07 00:36:43,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:43,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359666689] [2021-12-07 00:36:43,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:43,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:36:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:36:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:36:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:36:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:36:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:36:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:36:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:36:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-07 00:36:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:36:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:36:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:36:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:36:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-07 00:36:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-07 00:36:43,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:43,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359666689] [2021-12-07 00:36:43,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359666689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:43,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:43,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-07 00:36:43,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553329042] [2021-12-07 00:36:43,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:43,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:36:43,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:43,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:36:43,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:36:43,672 INFO L87 Difference]: Start difference. First operand 137 states and 162 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-07 00:36:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:44,412 INFO L93 Difference]: Finished difference Result 225 states and 261 transitions. [2021-12-07 00:36:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:36:44,413 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) Word has length 140 [2021-12-07 00:36:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:44,414 INFO L225 Difference]: With dead ends: 225 [2021-12-07 00:36:44,414 INFO L226 Difference]: Without dead ends: 119 [2021-12-07 00:36:44,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:36:44,415 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 91 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:44,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 584 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:36:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-07 00:36:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-12-07 00:36:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.082191780821918) internal successors, (79), 74 states have internal predecessors, (79), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-07 00:36:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 140 transitions. [2021-12-07 00:36:44,422 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 140 transitions. Word has length 140 [2021-12-07 00:36:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:44,423 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 140 transitions. [2021-12-07 00:36:44,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-07 00:36:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 140 transitions. [2021-12-07 00:36:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-07 00:36:44,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:44,424 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-07 00:36:44,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:36:44,424 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:44,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:44,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1517224244, now seen corresponding path program 1 times [2021-12-07 00:36:44,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:44,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52207633] [2021-12-07 00:36:44,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:44,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:36:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:36:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:36:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:36:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:36:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:36:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:36:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:36:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:36:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:36:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:36:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:36:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:36:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-07 00:36:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-07 00:36:44,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:44,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52207633] [2021-12-07 00:36:44,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52207633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:44,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:44,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:36:44,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617118799] [2021-12-07 00:36:44,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:44,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:36:44,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:44,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:36:44,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:36:44,833 INFO L87 Difference]: Start difference. First operand 119 states and 140 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-07 00:36:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:45,413 INFO L93 Difference]: Finished difference Result 166 states and 196 transitions. [2021-12-07 00:36:45,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:36:45,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 135 [2021-12-07 00:36:45,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:45,415 INFO L225 Difference]: With dead ends: 166 [2021-12-07 00:36:45,415 INFO L226 Difference]: Without dead ends: 120 [2021-12-07 00:36:45,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:36:45,416 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 117 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:45,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 348 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:36:45,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-07 00:36:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-12-07 00:36:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 74 states have (on average 1.0810810810810811) internal successors, (80), 75 states have internal predecessors, (80), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-07 00:36:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2021-12-07 00:36:45,426 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 135 [2021-12-07 00:36:45,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:45,426 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2021-12-07 00:36:45,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-07 00:36:45,426 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2021-12-07 00:36:45,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-07 00:36:45,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:45,427 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-07 00:36:45,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:36:45,428 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:45,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:45,428 INFO L85 PathProgramCache]: Analyzing trace with hash -473758278, now seen corresponding path program 1 times [2021-12-07 00:36:45,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:45,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6406827] [2021-12-07 00:36:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:45,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:36:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:36:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:36:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:36:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:36:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:36:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:36:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:36:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:36:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:36:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:36:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:36:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:45,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:36:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-07 00:36:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-07 00:36:46,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:46,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6406827] [2021-12-07 00:36:46,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6406827] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:46,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232916576] [2021-12-07 00:36:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:46,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:46,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:36:46,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:36:46,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:36:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 118 conjunts are in the unsatisfiable core [2021-12-07 00:36:46,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:36:47,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-07 00:36:54,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:36:54,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:36:54,178 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-12-07 00:36:54,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 33 [2021-12-07 00:36:54,254 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-07 00:36:54,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2021-12-07 00:36:55,017 INFO L354 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-07 00:36:55,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 69 [2021-12-07 00:36:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-07 00:36:55,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:36:59,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232916576] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:59,502 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:36:59,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 37] total 57 [2021-12-07 00:36:59,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505020670] [2021-12-07 00:36:59,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:36:59,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-12-07 00:36:59,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:59,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-12-07 00:36:59,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=4118, Unknown=3, NotChecked=0, Total=4290 [2021-12-07 00:36:59,505 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand has 57 states, 50 states have (on average 2.48) internal successors, (124), 42 states have internal predecessors, (124), 15 states have call successors, (43), 10 states have call predecessors, (43), 16 states have return successors, (40), 19 states have call predecessors, (40), 14 states have call successors, (40) [2021-12-07 00:37:04,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:04,907 INFO L93 Difference]: Finished difference Result 174 states and 206 transitions. [2021-12-07 00:37:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-12-07 00:37:04,908 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 50 states have (on average 2.48) internal successors, (124), 42 states have internal predecessors, (124), 15 states have call successors, (43), 10 states have call predecessors, (43), 16 states have return successors, (40), 19 states have call predecessors, (40), 14 states have call successors, (40) Word has length 136 [2021-12-07 00:37:04,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:04,909 INFO L225 Difference]: With dead ends: 174 [2021-12-07 00:37:04,909 INFO L226 Difference]: Without dead ends: 123 [2021-12-07 00:37:04,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=464, Invalid=9039, Unknown=3, NotChecked=0, Total=9506 [2021-12-07 00:37:04,912 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 223 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 3710 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 4172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 3710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:04,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 1849 Invalid, 4172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 3710 Invalid, 0 Unknown, 217 Unchecked, 3.1s Time] [2021-12-07 00:37:04,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-07 00:37:04,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-12-07 00:37:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 75 states have (on average 1.08) internal successors, (81), 76 states have internal predecessors, (81), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-07 00:37:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2021-12-07 00:37:04,919 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 136 [2021-12-07 00:37:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:04,919 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2021-12-07 00:37:04,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 50 states have (on average 2.48) internal successors, (124), 42 states have internal predecessors, (124), 15 states have call successors, (43), 10 states have call predecessors, (43), 16 states have return successors, (40), 19 states have call predecessors, (40), 14 states have call successors, (40) [2021-12-07 00:37:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2021-12-07 00:37:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-07 00:37:04,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:04,920 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-07 00:37:04,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:37:05,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 00:37:05,122 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:37:05,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1103785842, now seen corresponding path program 2 times [2021-12-07 00:37:05,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:05,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262552828] [2021-12-07 00:37:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:05,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:37:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:37:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:37:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:37:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:37:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:37:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:37:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:37:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:37:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:37:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:37:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:37:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:37:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:37:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:37:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-07 00:37:05,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:05,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262552828] [2021-12-07 00:37:05,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262552828] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:05,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623093300] [2021-12-07 00:37:05,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:37:05,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:05,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:37:05,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:37:05,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:37:08,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:37:08,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:37:08,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 75 conjunts are in the unsatisfiable core [2021-12-07 00:37:08,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:37:08,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-07 00:37:17,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:17,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:17,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:17,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:17,658 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-12-07 00:37:17,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 46 [2021-12-07 00:37:17,739 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-07 00:37:17,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2021-12-07 00:37:18,391 INFO L354 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-07 00:37:18,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 59 [2021-12-07 00:37:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-07 00:37:18,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:37:22,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623093300] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:22,589 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:37:22,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27] total 49 [2021-12-07 00:37:22,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026538981] [2021-12-07 00:37:22,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:37:22,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-07 00:37:22,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:22,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-07 00:37:22,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=3160, Unknown=3, NotChecked=0, Total=3306 [2021-12-07 00:37:22,591 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand has 49 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 36 states have internal predecessors, (107), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) [2021-12-07 00:37:36,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:36,643 INFO L93 Difference]: Finished difference Result 173 states and 205 transitions. [2021-12-07 00:37:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-07 00:37:36,644 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 36 states have internal predecessors, (107), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) Word has length 137 [2021-12-07 00:37:36,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:36,645 INFO L225 Difference]: With dead ends: 173 [2021-12-07 00:37:36,645 INFO L226 Difference]: Without dead ends: 122 [2021-12-07 00:37:36,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=327, Invalid=6640, Unknown=5, NotChecked=0, Total=6972 [2021-12-07 00:37:36,647 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 101 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 764 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:36,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 2212 Invalid, 3133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2258 Invalid, 0 Unknown, 764 Unchecked, 2.3s Time] [2021-12-07 00:37:36,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-07 00:37:36,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-12-07 00:37:36,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 77 states have internal predecessors, (82), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-07 00:37:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 143 transitions. [2021-12-07 00:37:36,655 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 143 transitions. Word has length 137 [2021-12-07 00:37:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:36,655 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 143 transitions. [2021-12-07 00:37:36,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 36 states have internal predecessors, (107), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) [2021-12-07 00:37:36,655 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 143 transitions. [2021-12-07 00:37:36,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-07 00:37:36,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:36,656 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:37:36,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:37:36,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:36,858 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:37:36,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash 840196154, now seen corresponding path program 3 times [2021-12-07 00:37:36,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:36,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857042299] [2021-12-07 00:37:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:36,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:37:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:37:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:37:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:37:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:37:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:37:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:37:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:37:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:37:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:37:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:37:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:37:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:37:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:37:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-07 00:37:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-07 00:37:37,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:37,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857042299] [2021-12-07 00:37:37,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857042299] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:37,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096283111] [2021-12-07 00:37:37,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:37:37,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:37,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:37:37,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:37:37,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:37:41,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-07 00:37:41,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:37:41,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 2868 conjuncts, 83 conjunts are in the unsatisfiable core [2021-12-07 00:37:41,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:37:41,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-07 00:37:54,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:54,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:54,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:54,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:54,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:54,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:54,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 38 [2021-12-07 00:37:54,779 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-07 00:37:54,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2021-12-07 00:37:55,487 INFO L354 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-07 00:37:55,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 59 [2021-12-07 00:37:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-07 00:37:55,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:37:59,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096283111] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:59,490 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:37:59,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29] total 52 [2021-12-07 00:37:59,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189811785] [2021-12-07 00:37:59,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:37:59,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-07 00:37:59,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:59,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-07 00:37:59,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=3505, Unknown=4, NotChecked=0, Total=3660 [2021-12-07 00:37:59,492 INFO L87 Difference]: Start difference. First operand 122 states and 143 transitions. Second operand has 52 states, 47 states have (on average 2.3191489361702127) internal successors, (109), 39 states have internal predecessors, (109), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) [2021-12-07 00:38:16,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:16,862 INFO L93 Difference]: Finished difference Result 174 states and 206 transitions. [2021-12-07 00:38:16,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-07 00:38:16,862 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 47 states have (on average 2.3191489361702127) internal successors, (109), 39 states have internal predecessors, (109), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) Word has length 138 [2021-12-07 00:38:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:16,863 INFO L225 Difference]: With dead ends: 174 [2021-12-07 00:38:16,863 INFO L226 Difference]: Without dead ends: 123 [2021-12-07 00:38:16,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=341, Invalid=7309, Unknown=6, NotChecked=0, Total=7656 [2021-12-07 00:38:16,866 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 133 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 565 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:16,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 2330 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2564 Invalid, 0 Unknown, 565 Unchecked, 2.4s Time] [2021-12-07 00:38:16,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-07 00:38:16,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-12-07 00:38:16,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 77 states have (on average 1.077922077922078) internal successors, (83), 78 states have internal predecessors, (83), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-07 00:38:16,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2021-12-07 00:38:16,873 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 138 [2021-12-07 00:38:16,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:16,873 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2021-12-07 00:38:16,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 47 states have (on average 2.3191489361702127) internal successors, (109), 39 states have internal predecessors, (109), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) [2021-12-07 00:38:16,874 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2021-12-07 00:38:16,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-07 00:38:16,874 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:16,874 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 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] [2021-12-07 00:38:16,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:38:17,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:17,075 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:38:17,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:17,076 INFO L85 PathProgramCache]: Analyzing trace with hash 974095886, now seen corresponding path program 4 times [2021-12-07 00:38:17,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:38:17,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341526116] [2021-12-07 00:38:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:17,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:38:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:38:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:38:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:38:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:38:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:38:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:38:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:38:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:38:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:38:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:38:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:38:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:38:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:38:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:38:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:38:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:38:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:38:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:38:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:38:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:38:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:38:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-07 00:38:17,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:38:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341526116] [2021-12-07 00:38:17,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341526116] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99304243] [2021-12-07 00:38:17,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:38:17,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:17,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:38:17,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:38:18,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:38:20,333 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:38:20,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:38:20,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 3327 conjuncts, 146 conjunts are in the unsatisfiable core [2021-12-07 00:38:20,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:21,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-07 00:38:43,844 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2816 Int) (|aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_26_67| Int) (v_ArrVal_2809 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_29| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_28| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_27| Int) (v_ArrVal_2820 Int) (|aux_div_v_#Ultimate.C_memcpy_#t~loopctr1326_26_67| Int) (v_ArrVal_2813 Int)) (let ((.cse0 (* 18446744073709551616 |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1326_26_67|))) (and (<= 0 (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_26_67|)) (<= 0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_26_67|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_27| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_28|) (< |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_26_67| (mod |c_#Ultimate.C_memcpy_size| 18446744073709551616)) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_28| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_29|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) (+ (* |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1326_26_67| 18446744073709551616) |c_#Ultimate.C_memcpy_dest.offset| |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_26_67|) v_ArrVal_2809) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_27| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_2813) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_28| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_2816) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_29| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_2820))) (<= (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_26_67| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_27|)))) is different from true [2021-12-07 00:38:51,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:51,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:51,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:51,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:51,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:51,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:51,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:51,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:51,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:51,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:51,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:51,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:52,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:52,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:52,012 INFO L354 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2021-12-07 00:38:52,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 67 [2021-12-07 00:38:52,131 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-07 00:38:52,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2021-12-07 00:38:55,243 INFO L354 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-07 00:38:55,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 69 [2021-12-07 00:38:55,460 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 20 proven. 10 refuted. 3 times theorem prover too weak. 126 trivial. 4 not checked. [2021-12-07 00:38:55,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:39:07,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99304243] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:39:07,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:39:07,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 43] total 66 [2021-12-07 00:39:07,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227617183] [2021-12-07 00:39:07,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:39:07,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-12-07 00:39:07,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:07,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-12-07 00:39:07,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=5214, Unknown=12, NotChecked=144, Total=5550 [2021-12-07 00:39:07,980 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand has 66 states, 57 states have (on average 2.1228070175438596) internal successors, (121), 49 states have internal predecessors, (121), 17 states have call successors, (42), 10 states have call predecessors, (42), 15 states have return successors, (38), 21 states have call predecessors, (38), 16 states have call successors, (38) [2021-12-07 00:39:49,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:39:49,705 INFO L93 Difference]: Finished difference Result 177 states and 209 transitions. [2021-12-07 00:39:49,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-07 00:39:49,706 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 57 states have (on average 2.1228070175438596) internal successors, (121), 49 states have internal predecessors, (121), 17 states have call successors, (42), 10 states have call predecessors, (42), 15 states have return successors, (38), 21 states have call predecessors, (38), 16 states have call successors, (38) Word has length 139 [2021-12-07 00:39:49,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:39:49,706 INFO L225 Difference]: With dead ends: 177 [2021-12-07 00:39:49,707 INFO L226 Difference]: Without dead ends: 126 [2021-12-07 00:39:49,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1987 ImplicationChecksByTransitivity, 76.3s TimeCoverageRelationStatistics Valid=495, Invalid=12369, Unknown=22, NotChecked=224, Total=13110 [2021-12-07 00:39:49,711 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 121 mSDsluCounter, 2446 mSDsCounter, 0 mSdLazyCounter, 3704 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 4916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 3704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1075 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:39:49,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 2540 Invalid, 4916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 3704 Invalid, 0 Unknown, 1075 Unchecked, 3.6s Time] [2021-12-07 00:39:49,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-07 00:39:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2021-12-07 00:39:49,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 78 states have (on average 1.0769230769230769) internal successors, (84), 79 states have internal predecessors, (84), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-07 00:39:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2021-12-07 00:39:49,719 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 139 [2021-12-07 00:39:49,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:39:49,719 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2021-12-07 00:39:49,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 57 states have (on average 2.1228070175438596) internal successors, (121), 49 states have internal predecessors, (121), 17 states have call successors, (42), 10 states have call predecessors, (42), 15 states have return successors, (38), 21 states have call predecessors, (38), 16 states have call successors, (38) [2021-12-07 00:39:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2021-12-07 00:39:49,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-07 00:39:49,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:49,720 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 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] [2021-12-07 00:39:49,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-07 00:39:49,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-07 00:39:49,922 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:39:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:49,923 INFO L85 PathProgramCache]: Analyzing trace with hash 830020282, now seen corresponding path program 5 times [2021-12-07 00:39:49,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:49,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847292096] [2021-12-07 00:39:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:49,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:39:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:39:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:39:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:39:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:39:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:39:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:39:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:39:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:39:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:39:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:39:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:39:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:39:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:39:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:39:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:39:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:39:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:39:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:39:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:39:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:51,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-07 00:39:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-07 00:39:51,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:51,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847292096] [2021-12-07 00:39:51,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847292096] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:39:51,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220829836] [2021-12-07 00:39:51,132 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 00:39:51,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:39:51,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:39:51,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:39:51,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:40:12,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-12-07 00:40:12,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:40:12,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 3458 conjuncts, 162 conjunts are in the unsatisfiable core [2021-12-07 00:40:12,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:40:13,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-07 00:40:37,715 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3848 Int) (v_ArrVal_3859 Int) (v_ArrVal_3857 Int) (v_ArrVal_3852 Int) (v_ArrVal_3863 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_49| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_48| Int)) (and (<= 3 |v_#Ultimate.C_memcpy_#t~loopctr1326_48|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (store (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) |c_#Ultimate.C_memcpy_dest.offset| v_ArrVal_3848) (+ |c_#Ultimate.C_memcpy_dest.offset| 1) v_ArrVal_3852) (+ 2 |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_3857) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_48| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_3859) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_49| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_3863))) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_48| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_49|))) is different from true [2021-12-07 00:40:48,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:40:48,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 60 [2021-12-07 00:40:48,512 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-07 00:40:48,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2021-12-07 00:40:49,510 INFO L354 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-07 00:40:49,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 59 [2021-12-07 00:40:49,689 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 20 proven. 16 refuted. 1 times theorem prover too weak. 126 trivial. 5 not checked. [2021-12-07 00:40:49,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:40:55,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220829836] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:40:55,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:40:55,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 44] total 70 [2021-12-07 00:40:55,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265270278] [2021-12-07 00:40:55,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:40:55,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-12-07 00:40:55,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:40:55,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-12-07 00:40:55,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=5804, Unknown=14, NotChecked=152, Total=6162 [2021-12-07 00:40:55,212 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand has 70 states, 61 states have (on average 2.0163934426229506) internal successors, (123), 53 states have internal predecessors, (123), 17 states have call successors, (42), 10 states have call predecessors, (42), 15 states have return successors, (38), 21 states have call predecessors, (38), 16 states have call successors, (38) [2021-12-07 00:41:34,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:34,871 INFO L93 Difference]: Finished difference Result 179 states and 212 transitions. [2021-12-07 00:41:34,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-12-07 00:41:34,872 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 61 states have (on average 2.0163934426229506) internal successors, (123), 53 states have internal predecessors, (123), 17 states have call successors, (42), 10 states have call predecessors, (42), 15 states have return successors, (38), 21 states have call predecessors, (38), 16 states have call successors, (38) Word has length 140 [2021-12-07 00:41:34,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:34,873 INFO L225 Difference]: With dead ends: 179 [2021-12-07 00:41:34,873 INFO L226 Difference]: Without dead ends: 131 [2021-12-07 00:41:34,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2219 ImplicationChecksByTransitivity, 76.8s TimeCoverageRelationStatistics Valid=511, Invalid=13277, Unknown=22, NotChecked=232, Total=14042 [2021-12-07 00:41:34,875 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 94 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 3810 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 5222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 3810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1302 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:34,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 2752 Invalid, 5222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 3810 Invalid, 0 Unknown, 1302 Unchecked, 3.9s Time] [2021-12-07 00:41:34,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-07 00:41:34,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2021-12-07 00:41:34,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 82 states have internal predecessors, (88), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-07 00:41:34,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2021-12-07 00:41:34,883 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 140 [2021-12-07 00:41:34,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:34,884 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2021-12-07 00:41:34,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 61 states have (on average 2.0163934426229506) internal successors, (123), 53 states have internal predecessors, (123), 17 states have call successors, (42), 10 states have call predecessors, (42), 15 states have return successors, (38), 21 states have call predecessors, (38), 16 states have call successors, (38) [2021-12-07 00:41:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2021-12-07 00:41:34,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-07 00:41:34,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:34,885 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 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] [2021-12-07 00:41:34,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 00:41:35,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-07 00:41:35,087 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:35,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:35,088 INFO L85 PathProgramCache]: Analyzing trace with hash 658643854, now seen corresponding path program 6 times [2021-12-07 00:41:35,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:35,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390282719] [2021-12-07 00:41:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:35,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:41:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:41:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:41:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:41:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:41:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:41:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:41:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:41:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:41:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:41:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:41:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:41:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:41:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:41:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:41:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:41:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:41:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:41:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:41:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:35,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:41:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:36,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-07 00:41:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-07 00:41:36,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:36,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390282719] [2021-12-07 00:41:36,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390282719] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:41:36,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915033709] [2021-12-07 00:41:36,282 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 00:41:36,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:41:36,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:41:36,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:41:36,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:42:31,841 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-07 00:42:31,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:42:31,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 3563 conjuncts, 104 conjunts are in the unsatisfiable core [2021-12-07 00:42:31,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:32,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-07 00:43:30,209 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memcpy_#t~loopctr1326_65| Int) (v_ArrVal_5086 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_64| Int) (|aux_div_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_63| Int) (v_ArrVal_5071 Int) (|aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67| Int) (v_ArrVal_5079 Int) (v_ArrVal_5078 Int) (v_ArrVal_5089 Int)) (let ((.cse0 (* 18446744073709551616 |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67|))) (and (<= 0 (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67|)) (<= (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_63|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_65| 2) |c_#Ultimate.C_memcpy_#t~loopctr1326|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_63| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_64|) (< |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67| (mod |c_#Ultimate.C_memcpy_size| 18446744073709551616)) (<= 0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (store (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) (+ (* |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67| 18446744073709551616) |c_#Ultimate.C_memcpy_dest.offset| |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67|) v_ArrVal_5071) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_63| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_5078) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_64| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_5079) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_65| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_5086) (+ (- 1) |c_#Ultimate.C_memcpy_dest.offset| |c_#Ultimate.C_memcpy_#t~loopctr1326|) v_ArrVal_5089))) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_64| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_65|)))) is different from true [2021-12-07 00:43:32,674 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memcpy_#t~loopctr1326_65| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_64| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_63| Int) (|aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_67_67| Int) (v_ArrVal_5079 Int) (v_ArrVal_5078 Int) (v_ArrVal_5089 Int) (v_ArrVal_5086 Int) (|aux_div_v_#Ultimate.C_memcpy_#t~loopctr1326_67_67| Int) (|aux_div_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67| Int) (v_ArrVal_5094 Int) (v_ArrVal_5071 Int) (|aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67| Int)) (let ((.cse0 (* 18446744073709551616 |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67|)) (.cse1 (mod |c_#Ultimate.C_memcpy_size| 18446744073709551616))) (and (<= 0 (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67|)) (< |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_67_67| .cse1) (<= (+ .cse0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_63|) (<= 0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_67_67|) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (let ((.cse2 (* |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1326_67_67| 18446744073709551616))) (store (store (store (store (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) (+ (* |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67| 18446744073709551616) |c_#Ultimate.C_memcpy_dest.offset| |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67|) v_ArrVal_5071) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_63| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_5078) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_64| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_5079) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_65| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_5086) (+ (- 1) |c_#Ultimate.C_memcpy_dest.offset| |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_67_67| .cse2) v_ArrVal_5089) (+ |c_#Ultimate.C_memcpy_dest.offset| |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_67_67| .cse2) v_ArrVal_5094))) |c_#memory_int|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_63| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_64|) (< |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67| .cse1) (<= 0 |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_62_67|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_65| 2) (+ (* 18446744073709551616 |aux_div_v_#Ultimate.C_memcpy_#t~loopctr1326_67_67|) |aux_mod_v_#Ultimate.C_memcpy_#t~loopctr1326_67_67|)) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_64| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_65|)))) is different from true [2021-12-07 00:43:52,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:43:52,850 INFO L354 Elim1Store]: treesize reduction 31, result has 40.4 percent of original size [2021-12-07 00:43:52,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 27 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 99 [2021-12-07 00:43:53,105 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-07 00:43:53,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2021-12-07 00:43:54,487 INFO L354 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-07 00:43:54,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 69 [2021-12-07 00:43:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 2 proven. 5 refuted. 6 times theorem prover too weak. 150 trivial. 11 not checked. [2021-12-07 00:43:54,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:44:16,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915033709] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:44:16,305 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:44:16,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 32] total 60 [2021-12-07 00:44:16,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818748976] [2021-12-07 00:44:16,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:44:16,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-12-07 00:44:16,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:44:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-12-07 00:44:16,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=4232, Unknown=34, NotChecked=262, Total=4692 [2021-12-07 00:44:16,306 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand has 60 states, 55 states have (on average 2.090909090909091) internal successors, (115), 47 states have internal predecessors, (115), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) [2021-12-07 00:45:28,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:45:28,962 INFO L93 Difference]: Finished difference Result 180 states and 213 transitions. [2021-12-07 00:45:28,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-07 00:45:28,962 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 55 states have (on average 2.090909090909091) internal successors, (115), 47 states have internal predecessors, (115), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) Word has length 141 [2021-12-07 00:45:28,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:45:28,964 INFO L225 Difference]: With dead ends: 180 [2021-12-07 00:45:28,964 INFO L226 Difference]: Without dead ends: 132 [2021-12-07 00:45:28,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 161.8s TimeCoverageRelationStatistics Valid=380, Invalid=9275, Unknown=55, NotChecked=390, Total=10100 [2021-12-07 00:45:28,965 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 134 mSDsluCounter, 2510 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 4101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1205 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:45:28,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 2611 Invalid, 4101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2747 Invalid, 0 Unknown, 1205 Unchecked, 3.2s Time] [2021-12-07 00:45:28,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-07 00:45:28,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2021-12-07 00:45:28,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 82 states have (on average 1.0975609756097562) internal successors, (90), 83 states have internal predecessors, (90), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-07 00:45:28,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2021-12-07 00:45:28,975 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 141 [2021-12-07 00:45:28,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:45:28,976 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2021-12-07 00:45:28,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 55 states have (on average 2.090909090909091) internal successors, (115), 47 states have internal predecessors, (115), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) [2021-12-07 00:45:28,976 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2021-12-07 00:45:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-07 00:45:28,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:45:28,977 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:45:29,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 00:45:29,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-07 00:45:29,178 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:45:29,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:45:29,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1641892614, now seen corresponding path program 7 times [2021-12-07 00:45:29,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:45:29,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653757173] [2021-12-07 00:45:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:45:29,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:45:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:45:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:45:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:45:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:45:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:45:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:45:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:45:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:45:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:45:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:45:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:45:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:45:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:45:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:45:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:45:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:45:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:45:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:45:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:45:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:45:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-07 00:45:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:45:29,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:45:29,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653757173] [2021-12-07 00:45:29,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653757173] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:45:29,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730740419] [2021-12-07 00:45:29,765 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 00:45:29,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:45:29,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:45:29,766 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:45:29,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:45:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:32,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 3504 conjuncts, 146 conjunts are in the unsatisfiable core [2021-12-07 00:45:32,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:45:33,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-07 00:45:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:45:58,354 INFO L354 Elim1Store]: treesize reduction 104, result has 38.1 percent of original size [2021-12-07 00:45:58,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 31 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 103 [2021-12-07 00:45:58,465 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-07 00:45:58,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2021-12-07 00:45:59,388 INFO L354 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-07 00:45:59,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 69 [2021-12-07 00:45:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 113 refuted. 3 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-07 00:45:59,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:46:12,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730740419] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:46:12,411 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:46:12,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 43] total 55 [2021-12-07 00:46:12,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811962629] [2021-12-07 00:46:12,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:46:12,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-07 00:46:12,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:46:12,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-07 00:46:12,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3854, Unknown=6, NotChecked=0, Total=4032 [2021-12-07 00:46:12,412 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand has 55 states, 50 states have (on average 2.48) internal successors, (124), 41 states have internal predecessors, (124), 9 states have call successors, (38), 10 states have call predecessors, (38), 11 states have return successors, (33), 11 states have call predecessors, (33), 8 states have call successors, (33) [2021-12-07 00:46:27,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:46:27,572 INFO L93 Difference]: Finished difference Result 180 states and 212 transitions. [2021-12-07 00:46:27,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-07 00:46:27,573 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 50 states have (on average 2.48) internal successors, (124), 41 states have internal predecessors, (124), 9 states have call successors, (38), 10 states have call predecessors, (38), 11 states have return successors, (33), 11 states have call predecessors, (33), 8 states have call successors, (33) Word has length 142 [2021-12-07 00:46:27,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:46:27,574 INFO L225 Difference]: With dead ends: 180 [2021-12-07 00:46:27,574 INFO L226 Difference]: Without dead ends: 130 [2021-12-07 00:46:27,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1453 ImplicationChecksByTransitivity, 41.6s TimeCoverageRelationStatistics Valid=361, Invalid=7286, Unknown=9, NotChecked=0, Total=7656 [2021-12-07 00:46:27,575 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 295 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 2799 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 3965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 2799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 851 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:46:27,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 1617 Invalid, 3965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 2799 Invalid, 0 Unknown, 851 Unchecked, 2.8s Time] [2021-12-07 00:46:27,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-07 00:46:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2021-12-07 00:46:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 82 states have (on average 1.0853658536585367) internal successors, (89), 83 states have internal predecessors, (89), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-07 00:46:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2021-12-07 00:46:27,585 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 142 [2021-12-07 00:46:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:46:27,585 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2021-12-07 00:46:27,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 50 states have (on average 2.48) internal successors, (124), 41 states have internal predecessors, (124), 9 states have call successors, (38), 10 states have call predecessors, (38), 11 states have return successors, (33), 11 states have call predecessors, (33), 8 states have call successors, (33) [2021-12-07 00:46:27,586 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2021-12-07 00:46:27,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-07 00:46:27,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:46:27,586 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 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] [2021-12-07 00:46:27,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 00:46:27,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-07 00:46:27,787 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:46:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:46:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash -359058118, now seen corresponding path program 8 times [2021-12-07 00:46:27,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:46:27,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453340282] [2021-12-07 00:46:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:46:27,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:46:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:46:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:46:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:46:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:46:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:46:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:46:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:46:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:46:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:46:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:46:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:46:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:46:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:46:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:46:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:46:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:46:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:46:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:46:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:46:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:46:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:28,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:46:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-07 00:46:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:46:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 28 proven. 29 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-07 00:46:29,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:46:29,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453340282] [2021-12-07 00:46:29,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453340282] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:46:29,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352405161] [2021-12-07 00:46:29,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:46:29,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:46:29,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:46:29,113 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:46:29,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 00:46:40,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:46:40,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:46:40,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 3720 conjuncts, 99 conjunts are in the unsatisfiable core [2021-12-07 00:46:40,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:46:41,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-07 00:48:21,571 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7608 Int) (v_ArrVal_7603 Int) (v_ArrVal_7616 Int) (v_ArrVal_7610 Int) (v_ArrVal_7600 Int) (v_ArrVal_7596 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_104| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_103| Int) (v_ArrVal_7592 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_106| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_105| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_100| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_102| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_101| Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (store (store (store (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_100| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_7592) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_101| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_7596) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_102| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_7600) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_103| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_7603) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_104| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_7608) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_105| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_7610) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_106| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_7616))) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_103| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_104|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_105| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_106|) (<= 0 |v_#Ultimate.C_memcpy_#t~loopctr1326_100|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_100| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_101|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_104| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_105|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_102| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_103|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_101| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_102|))) is different from true [2021-12-07 00:48:44,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:48:44,660 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-12-07 00:48:44,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 35 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 87 [2021-12-07 00:48:44,936 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-07 00:48:44,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2021-12-07 00:48:52,354 INFO L354 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-07 00:48:52,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 59 [2021-12-07 00:48:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 2 proven. 7 refuted. 15 times theorem prover too weak. 150 trivial. 7 not checked. [2021-12-07 00:48:52,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:49:13,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352405161] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:49:13,994 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:49:13,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 33] total 62 [2021-12-07 00:49:13,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867084260] [2021-12-07 00:49:13,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:49:13,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-12-07 00:49:13,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:13,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-12-07 00:49:13,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=4610, Unknown=56, NotChecked=136, Total=4970 [2021-12-07 00:49:13,996 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand has 62 states, 57 states have (on average 2.0526315789473686) internal successors, (117), 49 states have internal predecessors, (117), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) [2021-12-07 00:50:40,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:50:40,332 INFO L93 Difference]: Finished difference Result 181 states and 214 transitions. [2021-12-07 00:50:40,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-12-07 00:50:40,332 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 57 states have (on average 2.0526315789473686) internal successors, (117), 49 states have internal predecessors, (117), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) Word has length 142 [2021-12-07 00:50:40,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:50:40,333 INFO L225 Difference]: With dead ends: 181 [2021-12-07 00:50:40,333 INFO L226 Difference]: Without dead ends: 133 [2021-12-07 00:50:40,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1381 ImplicationChecksByTransitivity, 224.7s TimeCoverageRelationStatistics Valid=389, Invalid=10036, Unknown=85, NotChecked=202, Total=10712 [2021-12-07 00:50:40,335 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 160 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 2758 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 4293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1358 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:50:40,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 2656 Invalid, 4293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 2758 Invalid, 0 Unknown, 1358 Unchecked, 3.5s Time] [2021-12-07 00:50:40,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-07 00:50:40,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2021-12-07 00:50:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 83 states have (on average 1.0963855421686748) internal successors, (91), 84 states have internal predecessors, (91), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-07 00:50:40,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2021-12-07 00:50:40,346 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 142 [2021-12-07 00:50:40,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:50:40,346 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2021-12-07 00:50:40,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 57 states have (on average 2.0526315789473686) internal successors, (117), 49 states have internal predecessors, (117), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) [2021-12-07 00:50:40,346 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2021-12-07 00:50:40,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-07 00:50:40,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:50:40,347 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:50:40,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-07 00:50:40,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-07 00:50:40,548 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:50:40,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:50:40,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1169084622, now seen corresponding path program 9 times [2021-12-07 00:50:40,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:50:40,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133698545] [2021-12-07 00:50:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:50:40,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:50:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:50:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:50:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:50:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:50:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:50:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:50:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:50:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-07 00:50:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:50:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:50:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:50:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:50:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:50:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:50:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:50:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:50:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:50:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:50:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:50:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:50:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:40,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:50:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:50:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:50:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:50:41,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:50:41,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133698545] [2021-12-07 00:50:41,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133698545] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:50:41,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877309529] [2021-12-07 00:50:41,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:50:41,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:50:41,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:50:41,193 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:50:41,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0052d08a-0a17-4c18-9df5-1c25fef604b5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process