./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c2c8100e1f648cee1922c84a2421989bafb670d4445ddc160c17e3cd878eaa49 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:34:49,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:34:49,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:34:49,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:34:49,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:34:49,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:34:49,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:34:49,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:34:49,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:34:49,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:34:49,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:34:49,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:34:49,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:34:49,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:34:49,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:34:49,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:34:49,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:34:49,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:34:49,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:34:49,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:34:49,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:34:49,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:34:49,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:34:49,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:34:49,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:34:49,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:34:49,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:34:49,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:34:49,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:34:49,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:34:49,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:34:49,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:34:49,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:34:49,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:34:49,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:34:49,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:34:49,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:34:49,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:34:49,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:34:49,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:34:49,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:34:49,830 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:34:49,870 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:34:49,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:34:49,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:34:49,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:34:49,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:34:49,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:34:49,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:34:49,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:34:49,882 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:34:49,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:34:49,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:34:49,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:34:49,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:34:49,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:34:49,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:34:49,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:34:49,886 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:34:49,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:34:49,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:34:49,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:34:49,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:34:49,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:34:49,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:34:49,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:34:49,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:34:49,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:34:49,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:34:49,888 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:34:49,889 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:34:49,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:34:49,889 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_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2c8100e1f648cee1922c84a2421989bafb670d4445ddc160c17e3cd878eaa49 [2022-11-20 11:34:50,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:34:50,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:34:50,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:34:50,294 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:34:50,296 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:34:50,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2022-11-20 11:34:53,553 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:34:54,265 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:34:54,270 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2022-11-20 11:34:54,323 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/data/27cc70f5a/9476dcafa30e4ef084c11b643cab9119/FLAG9de77d8f0 [2022-11-20 11:34:54,346 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/data/27cc70f5a/9476dcafa30e4ef084c11b643cab9119 [2022-11-20 11:34:54,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:34:54,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:34:54,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:34:54,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:34:54,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:34:54,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:34:54" (1/1) ... [2022-11-20 11:34:54,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158a3bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:54, skipping insertion in model container [2022-11-20 11:34:54,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:34:54" (1/1) ... [2022-11-20 11:34:54,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:34:54,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:34:54,881 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2022-11-20 11:34:54,891 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2022-11-20 11:34:56,138 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:56,146 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:56,148 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:56,151 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:56,154 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:56,171 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:56,172 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:56,175 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:56,176 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:56,717 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 11:34:56,719 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 11:34:56,721 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 11:34:56,722 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 11:34:56,724 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 11:34:56,725 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 11:34:56,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 11:34:56,727 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 11:34:56,728 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 11:34:56,729 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 11:34:56,929 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 11:34:57,105 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:57,105 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:57,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:34:57,272 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:34:57,288 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2022-11-20 11:34:57,289 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2022-11-20 11:34:57,328 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:57,329 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:57,329 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:57,330 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:57,331 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:57,338 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:57,339 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:57,341 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:57,341 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:57,406 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 11:34:57,407 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 11:34:57,409 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 11:34:57,411 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 11:34:57,412 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 11:34:57,413 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 11:34:57,414 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 11:34:57,415 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 11:34:57,416 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 11:34:57,417 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 11:34:57,457 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 11:34:57,528 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:57,529 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:34:57,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:34:57,967 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:34:57,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:57 WrapperNode [2022-11-20 11:34:57,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:34:57,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:34:57,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:34:57,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:34:57,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:57" (1/1) ... [2022-11-20 11:34:58,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:57" (1/1) ... [2022-11-20 11:34:58,245 INFO L138 Inliner]: procedures = 691, calls = 2501, calls flagged for inlining = 53, calls inlined = 4, statements flattened = 752 [2022-11-20 11:34:58,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:34:58,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:34:58,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:34:58,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:34:58,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:57" (1/1) ... [2022-11-20 11:34:58,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:57" (1/1) ... [2022-11-20 11:34:58,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:57" (1/1) ... [2022-11-20 11:34:58,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:57" (1/1) ... [2022-11-20 11:34:58,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:57" (1/1) ... [2022-11-20 11:34:58,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:57" (1/1) ... [2022-11-20 11:34:58,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:57" (1/1) ... [2022-11-20 11:34:58,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:57" (1/1) ... [2022-11-20 11:34:58,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:34:58,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:34:58,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:34:58,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:34:58,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:57" (1/1) ... [2022-11-20 11:34:58,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:34:58,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:58,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:34:58,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:34:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_clean_up [2022-11-20 11:34:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_clean_up [2022-11-20 11:34:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-20 11:34:58,543 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-20 11:34:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:34:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 11:34:58,544 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 11:34:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:34:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 11:34:58,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 11:34:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:34:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:34:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:34:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:34:58,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:34:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 11:34:58,548 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 11:34:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-20 11:34:58,549 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-20 11:34:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:34:58,549 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:34:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:34:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:34:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:34:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 11:34:58,552 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 11:34:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:34:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:34:58,954 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:34:58,957 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:35:00,469 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:35:00,486 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:35:00,486 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:35:00,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:00 BoogieIcfgContainer [2022-11-20 11:35:00,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:35:00,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:35:00,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:35:00,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:35:00,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:34:54" (1/3) ... [2022-11-20 11:35:00,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793fc621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:00, skipping insertion in model container [2022-11-20 11:35:00,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:57" (2/3) ... [2022-11-20 11:35:00,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793fc621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:00, skipping insertion in model container [2022-11-20 11:35:00,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:00" (3/3) ... [2022-11-20 11:35:00,507 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_harness.i [2022-11-20 11:35:00,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:35:00,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:35:00,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:35:00,638 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a48cb3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:35:00,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:35:00,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-20 11:35:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 11:35:00,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:00,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-20 11:35:00,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:00,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:00,675 INFO L85 PathProgramCache]: Analyzing trace with hash 877800461, now seen corresponding path program 1 times [2022-11-20 11:35:00,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:00,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28080331] [2022-11-20 11:35:00,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:01,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:35:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:01,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:35:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:01,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:01,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:35:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:01,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:35:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:01,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:35:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:01,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:35:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 11:35:01,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:01,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28080331] [2022-11-20 11:35:01,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28080331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:01,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:01,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:35:01,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031054178] [2022-11-20 11:35:01,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:01,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:35:01,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:01,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:35:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:35:01,947 INFO L87 Difference]: Start difference. First operand has 84 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:35:02,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:02,585 INFO L93 Difference]: Finished difference Result 158 states and 207 transitions. [2022-11-20 11:35:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:35:02,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2022-11-20 11:35:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:02,600 INFO L225 Difference]: With dead ends: 158 [2022-11-20 11:35:02,600 INFO L226 Difference]: Without dead ends: 85 [2022-11-20 11:35:02,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:35:02,608 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 98 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:02,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 67 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:35:02,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-20 11:35:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2022-11-20 11:35:02,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 55 states have internal predecessors, (66), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:35:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2022-11-20 11:35:02,720 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 56 [2022-11-20 11:35:02,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:02,721 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2022-11-20 11:35:02,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:35:02,722 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2022-11-20 11:35:02,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 11:35:02,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:02,732 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-20 11:35:02,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:35:02,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:02,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:02,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1602789575, now seen corresponding path program 1 times [2022-11-20 11:35:02,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:02,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258749063] [2022-11-20 11:35:02,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:02,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:03,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:35:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:03,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:35:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:03,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:03,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:35:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:03,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:35:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:03,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:35:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:03,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:03,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:35:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:35:03,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:03,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258749063] [2022-11-20 11:35:04,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258749063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:35:04,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64698025] [2022-11-20 11:35:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:04,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:04,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:04,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:04,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:35:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:04,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:35:04,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:35:04,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:04,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64698025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:04,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:35:04,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-20 11:35:04,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203680913] [2022-11-20 11:35:04,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:04,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:35:04,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:04,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:35:04,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:35:04,917 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:35:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:05,144 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2022-11-20 11:35:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:35:05,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2022-11-20 11:35:05,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:05,152 INFO L225 Difference]: With dead ends: 139 [2022-11-20 11:35:05,152 INFO L226 Difference]: Without dead ends: 82 [2022-11-20 11:35:05,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:35:05,164 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 116 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:05,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 222 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:35:05,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-20 11:35:05,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-11-20 11:35:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 58 states have internal predecessors, (68), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-20 11:35:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2022-11-20 11:35:05,181 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 56 [2022-11-20 11:35:05,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:05,181 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2022-11-20 11:35:05,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:35:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2022-11-20 11:35:05,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 11:35:05,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:05,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-20 11:35:05,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:05,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:05,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:05,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:05,397 INFO L85 PathProgramCache]: Analyzing trace with hash -737763694, now seen corresponding path program 1 times [2022-11-20 11:35:05,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:05,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526511963] [2022-11-20 11:35:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:05,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:35:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:06,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:35:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:06,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:06,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:35:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:06,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:35:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:35:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:35:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:35:06,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:06,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526511963] [2022-11-20 11:35:06,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526511963] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:35:06,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20208994] [2022-11-20 11:35:06,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:06,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:06,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:06,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:06,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:35:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:07,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 2490 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:35:07,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:07,687 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:35:07,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:07,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20208994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:07,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:35:07,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-11-20 11:35:07,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794569050] [2022-11-20 11:35:07,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:07,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:35:07,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:07,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:35:07,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:35:07,691 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 11:35:08,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:08,071 INFO L93 Difference]: Finished difference Result 105 states and 129 transitions. [2022-11-20 11:35:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:35:08,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 62 [2022-11-20 11:35:08,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:08,074 INFO L225 Difference]: With dead ends: 105 [2022-11-20 11:35:08,074 INFO L226 Difference]: Without dead ends: 79 [2022-11-20 11:35:08,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:35:08,076 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 140 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:08,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 389 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:35:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-20 11:35:08,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-20 11:35:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 55 states have internal predecessors, (65), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:35:08,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2022-11-20 11:35:08,098 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 62 [2022-11-20 11:35:08,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:08,099 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2022-11-20 11:35:08,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 11:35:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2022-11-20 11:35:08,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 11:35:08,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:08,101 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:08,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:08,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:08,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:08,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:08,313 INFO L85 PathProgramCache]: Analyzing trace with hash -218893667, now seen corresponding path program 1 times [2022-11-20 11:35:08,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:08,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839752992] [2022-11-20 11:35:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:08,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:10,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:35:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:35:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:10,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:35:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:10,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:35:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:10,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:35:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:10,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:35:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:35:10,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:10,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839752992] [2022-11-20 11:35:10,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839752992] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:35:10,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764401971] [2022-11-20 11:35:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:10,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:10,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:10,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:10,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:35:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:11,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 2507 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 11:35:11,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:11,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-20 11:35:11,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-20 11:35:11,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:35:11,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:35:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:35:11,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:12,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6138 treesize of output 6042 [2022-11-20 11:35:31,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:35:31,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:35:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 11:35:31,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764401971] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:35:31,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:31,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 15] total 28 [2022-11-20 11:35:31,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981283682] [2022-11-20 11:35:31,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:31,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:35:31,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:31,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:35:31,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:35:31,643 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:35:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:32,006 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2022-11-20 11:35:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:35:32,007 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-20 11:35:32,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:32,013 INFO L225 Difference]: With dead ends: 85 [2022-11-20 11:35:32,014 INFO L226 Difference]: Without dead ends: 83 [2022-11-20 11:35:32,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:35:32,018 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 15 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:32,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 531 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:35:32,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-20 11:35:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-20 11:35:32,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 58 states have internal predecessors, (68), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:35:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2022-11-20 11:35:32,055 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 68 [2022-11-20 11:35:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:32,056 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2022-11-20 11:35:32,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:35:32,056 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2022-11-20 11:35:32,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 11:35:32,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:32,058 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:32,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:32,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:32,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:32,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:32,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1979939772, now seen corresponding path program 1 times [2022-11-20 11:35:32,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:32,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101489596] [2022-11-20 11:35:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:32,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:33,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:35:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:33,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:35:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:35:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:34,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:35:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:35:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:34,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:34,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:35:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:34,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 11:35:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:34,331 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:35:34,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:34,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101489596] [2022-11-20 11:35:34,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101489596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:35:34,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660880296] [2022-11-20 11:35:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:34,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:34,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:34,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:34,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:35:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:34,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 11:35:34,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:35,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:35:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:35:35,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:36,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-20 11:35:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:35:36,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660880296] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:35:36,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:36,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12, 14] total 26 [2022-11-20 11:35:36,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34136726] [2022-11-20 11:35:36,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:36,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:35:36,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:36,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:35:36,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:35:36,173 INFO L87 Difference]: Start difference. First operand 83 states and 99 transitions. Second operand has 13 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 6 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-20 11:35:37,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:37,400 INFO L93 Difference]: Finished difference Result 157 states and 191 transitions. [2022-11-20 11:35:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:35:37,401 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 6 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 74 [2022-11-20 11:35:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:37,402 INFO L225 Difference]: With dead ends: 157 [2022-11-20 11:35:37,402 INFO L226 Difference]: Without dead ends: 83 [2022-11-20 11:35:37,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 11:35:37,404 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 131 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:37,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 237 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 11:35:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-20 11:35:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-20 11:35:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 58 states have internal predecessors, (67), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:35:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 98 transitions. [2022-11-20 11:35:37,437 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 98 transitions. Word has length 74 [2022-11-20 11:35:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:37,437 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 98 transitions. [2022-11-20 11:35:37,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 6 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-20 11:35:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 98 transitions. [2022-11-20 11:35:37,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 11:35:37,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:37,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:37,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:37,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:37,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:37,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:37,643 INFO L85 PathProgramCache]: Analyzing trace with hash 103599828, now seen corresponding path program 1 times [2022-11-20 11:35:37,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:37,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724001729] [2022-11-20 11:35:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:37,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:38,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:35:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:38,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:35:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:38,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:35:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:38,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:35:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:38,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 11:35:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:39,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:39,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:35:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:39,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:35:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:39,035 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:35:39,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:39,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724001729] [2022-11-20 11:35:39,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724001729] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:35:39,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723911020] [2022-11-20 11:35:39,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:39,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:39,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:39,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:39,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:35:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:39,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 2544 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:35:39,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:39,838 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:35:39,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:39,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723911020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:39,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:35:39,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-11-20 11:35:39,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833779143] [2022-11-20 11:35:39,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:39,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:35:39,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:39,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:35:39,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:35:39,841 INFO L87 Difference]: Start difference. First operand 83 states and 98 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:35:40,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:40,047 INFO L93 Difference]: Finished difference Result 158 states and 193 transitions. [2022-11-20 11:35:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:35:40,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2022-11-20 11:35:40,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:40,049 INFO L225 Difference]: With dead ends: 158 [2022-11-20 11:35:40,049 INFO L226 Difference]: Without dead ends: 97 [2022-11-20 11:35:40,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:35:40,051 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 38 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:40,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 327 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 22 Unchecked, 0.2s Time] [2022-11-20 11:35:40,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-20 11:35:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2022-11-20 11:35:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 63 states have internal predecessors, (73), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:35:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2022-11-20 11:35:40,066 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 82 [2022-11-20 11:35:40,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:40,067 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2022-11-20 11:35:40,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:35:40,067 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2022-11-20 11:35:40,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 11:35:40,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:40,069 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:40,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:40,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:35:40,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:40,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:40,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1002251088, now seen corresponding path program 1 times [2022-11-20 11:35:40,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:40,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274732300] [2022-11-20 11:35:40,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:40,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:41,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:35:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:35:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:41,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:41,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:35:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:41,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:35:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:41,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 11:35:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:41,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:41,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:35:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:41,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:35:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:35:41,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:41,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274732300] [2022-11-20 11:35:41,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274732300] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:35:41,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825177886] [2022-11-20 11:35:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:41,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:41,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:41,480 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:41,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:35:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:42,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 2534 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 11:35:42,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:42,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:35:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:35:42,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:43,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-20 11:35:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 11:35:43,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825177886] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:35:43,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:43,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11, 11] total 25 [2022-11-20 11:35:43,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284821648] [2022-11-20 11:35:43,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:43,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:35:43,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:43,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:35:43,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:35:43,140 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-20 11:35:43,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:43,824 INFO L93 Difference]: Finished difference Result 110 states and 128 transitions. [2022-11-20 11:35:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:35:43,824 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 82 [2022-11-20 11:35:43,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:43,826 INFO L225 Difference]: With dead ends: 110 [2022-11-20 11:35:43,826 INFO L226 Difference]: Without dead ends: 89 [2022-11-20 11:35:43,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 162 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:35:43,827 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 73 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:43,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 112 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:35:43,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-20 11:35:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-20 11:35:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 64 states have internal predecessors, (74), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:35:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2022-11-20 11:35:43,850 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 82 [2022-11-20 11:35:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:43,850 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2022-11-20 11:35:43,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-20 11:35:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2022-11-20 11:35:43,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 11:35:43,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:43,856 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:43,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:44,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:44,066 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:44,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:44,067 INFO L85 PathProgramCache]: Analyzing trace with hash -18817266, now seen corresponding path program 1 times [2022-11-20 11:35:44,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:44,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082836427] [2022-11-20 11:35:44,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:44,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:44,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:35:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:44,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:35:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:44,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:44,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:35:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:45,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:35:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:45,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 11:35:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:45,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:45,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:35:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:35:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:45,263 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:35:45,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:45,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082836427] [2022-11-20 11:35:45,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082836427] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:35:45,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003716592] [2022-11-20 11:35:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:45,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:45,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:45,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:45,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:35:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:45,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-20 11:35:45,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:46,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 11:35:47,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:35:47,055 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:35:47,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 19 [2022-11-20 11:35:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:35:47,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:47,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003716592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:47,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:35:47,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [11] total 27 [2022-11-20 11:35:47,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338047172] [2022-11-20 11:35:47,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:47,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:35:47,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:47,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:35:47,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:35:47,112 INFO L87 Difference]: Start difference. First operand 89 states and 105 transitions. Second operand has 19 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 6 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-20 11:35:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:47,348 INFO L93 Difference]: Finished difference Result 171 states and 203 transitions. [2022-11-20 11:35:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:35:47,352 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 6 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 82 [2022-11-20 11:35:47,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:47,353 INFO L225 Difference]: With dead ends: 171 [2022-11-20 11:35:47,354 INFO L226 Difference]: Without dead ends: 99 [2022-11-20 11:35:47,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:35:47,357 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 20 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:47,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 717 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 84 Unchecked, 0.1s Time] [2022-11-20 11:35:47,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-20 11:35:47,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-20 11:35:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.178082191780822) internal successors, (86), 73 states have internal predecessors, (86), 16 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:35:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2022-11-20 11:35:47,379 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 82 [2022-11-20 11:35:47,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:47,380 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2022-11-20 11:35:47,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 6 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-20 11:35:47,380 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2022-11-20 11:35:47,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 11:35:47,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:47,382 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:47,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:47,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:47,592 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:47,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:47,593 INFO L85 PathProgramCache]: Analyzing trace with hash -334136494, now seen corresponding path program 1 times [2022-11-20 11:35:47,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:47,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246713590] [2022-11-20 11:35:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:47,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:47,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:35:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:35:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:47,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:35:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:47,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:35:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:47,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 11:35:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:47,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:35:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:35:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:48,016 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:35:48,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:48,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246713590] [2022-11-20 11:35:48,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246713590] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:35:48,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756881210] [2022-11-20 11:35:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:48,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:48,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:48,019 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:48,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:35:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:48,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:35:48,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:35:48,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:48,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756881210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:48,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:35:48,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-20 11:35:48,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229272554] [2022-11-20 11:35:48,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:48,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:35:48,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:48,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:35:48,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:35:48,663 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:35:48,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:48,700 INFO L93 Difference]: Finished difference Result 188 states and 226 transitions. [2022-11-20 11:35:48,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:35:48,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2022-11-20 11:35:48,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:48,702 INFO L225 Difference]: With dead ends: 188 [2022-11-20 11:35:48,702 INFO L226 Difference]: Without dead ends: 121 [2022-11-20 11:35:48,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:35:48,705 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 29 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:48,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 297 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:35:48,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-20 11:35:48,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2022-11-20 11:35:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 73 states have internal predecessors, (85), 16 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:35:48,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2022-11-20 11:35:48,732 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 82 [2022-11-20 11:35:48,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:48,732 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2022-11-20 11:35:48,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:35:48,733 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2022-11-20 11:35:48,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 11:35:48,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:48,734 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:48,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:48,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 11:35:48,943 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:48,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:48,943 INFO L85 PathProgramCache]: Analyzing trace with hash 926780756, now seen corresponding path program 1 times [2022-11-20 11:35:48,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:48,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161488030] [2022-11-20 11:35:48,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:48,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:50,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:35:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:50,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:35:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:50,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:35:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:35:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:51,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 11:35:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:51,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:51,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:35:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:51,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:35:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:35:51,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:51,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161488030] [2022-11-20 11:35:51,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161488030] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:35:51,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416439909] [2022-11-20 11:35:51,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:51,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:51,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:51,778 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:51,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:35:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:52,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 2526 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-20 11:35:52,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:35:53,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:53,887 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-20 11:35:53,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-20 11:35:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:35:53,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416439909] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:53,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:35:53,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-11-20 11:35:53,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237210880] [2022-11-20 11:35:53,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:53,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:35:53,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:53,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:35:53,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=852, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:35:53,915 INFO L87 Difference]: Start difference. First operand 99 states and 116 transitions. Second operand has 31 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 26 states have internal predecessors, (110), 10 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (21), 8 states have call predecessors, (21), 10 states have call successors, (21) [2022-11-20 11:35:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:58,444 INFO L93 Difference]: Finished difference Result 198 states and 245 transitions. [2022-11-20 11:35:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:35:58,445 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 26 states have internal predecessors, (110), 10 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (21), 8 states have call predecessors, (21), 10 states have call successors, (21) Word has length 82 [2022-11-20 11:35:58,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:58,447 INFO L225 Difference]: With dead ends: 198 [2022-11-20 11:35:58,447 INFO L226 Difference]: Without dead ends: 152 [2022-11-20 11:35:58,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=544, Invalid=3346, Unknown=16, NotChecked=0, Total=3906 [2022-11-20 11:35:58,450 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 428 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 2191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:58,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 320 Invalid, 2191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1912 Invalid, 0 Unknown, 145 Unchecked, 2.2s Time] [2022-11-20 11:35:58,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-20 11:35:58,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2022-11-20 11:35:58,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 89 states have internal predecessors, (99), 20 states have call successors, (20), 10 states have call predecessors, (20), 13 states have return successors, (23), 20 states have call predecessors, (23), 19 states have call successors, (23) [2022-11-20 11:35:58,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2022-11-20 11:35:58,475 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 82 [2022-11-20 11:35:58,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:58,477 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2022-11-20 11:35:58,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 26 states have internal predecessors, (110), 10 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (21), 8 states have call predecessors, (21), 10 states have call successors, (21) [2022-11-20 11:35:58,477 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2022-11-20 11:35:58,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 11:35:58,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:58,479 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:58,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:58,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:35:58,690 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash -670930472, now seen corresponding path program 1 times [2022-11-20 11:35:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:58,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784991858] [2022-11-20 11:35:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:58,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:58,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:35:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:58,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:35:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:58,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:58,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:35:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:59,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:35:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:59,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:35:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:35:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:59,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:35:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:59,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:35:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 11:35:59,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:59,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784991858] [2022-11-20 11:35:59,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784991858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:59,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:59,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:35:59,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723848023] [2022-11-20 11:35:59,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:59,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:35:59,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:59,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:35:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:35:59,158 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:35:59,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:59,649 INFO L93 Difference]: Finished difference Result 209 states and 246 transitions. [2022-11-20 11:35:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:35:59,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2022-11-20 11:35:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:59,652 INFO L225 Difference]: With dead ends: 209 [2022-11-20 11:35:59,652 INFO L226 Difference]: Without dead ends: 104 [2022-11-20 11:35:59,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:35:59,654 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 108 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:59,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 110 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:35:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-20 11:35:59,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2022-11-20 11:35:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 69 states have internal predecessors, (75), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-20 11:35:59,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2022-11-20 11:35:59,668 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 86 [2022-11-20 11:35:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:59,669 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2022-11-20 11:35:59,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:35:59,669 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2022-11-20 11:35:59,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 11:35:59,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:59,674 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:59,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:35:59,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:59,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:59,675 INFO L85 PathProgramCache]: Analyzing trace with hash -241913889, now seen corresponding path program 1 times [2022-11-20 11:35:59,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:59,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288340693] [2022-11-20 11:35:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:59,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:00,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:36:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:00,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:36:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:00,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:36:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:00,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:36:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:00,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:36:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:00,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 11:36:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:00,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:36:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:36:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:36:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:36:00,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:00,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288340693] [2022-11-20 11:36:00,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288340693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:36:00,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090988718] [2022-11-20 11:36:00,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:00,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:00,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:00,816 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:36:00,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:36:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:01,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2528 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 11:36:01,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:36:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:36:01,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:36:01,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090988718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:01,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:36:01,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-11-20 11:36:01,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680478862] [2022-11-20 11:36:01,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:01,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:36:01,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:01,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:36:01,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:36:01,571 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 11:36:01,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:01,710 INFO L93 Difference]: Finished difference Result 164 states and 185 transitions. [2022-11-20 11:36:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:36:01,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 84 [2022-11-20 11:36:01,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:01,712 INFO L225 Difference]: With dead ends: 164 [2022-11-20 11:36:01,712 INFO L226 Difference]: Without dead ends: 88 [2022-11-20 11:36:01,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:36:01,713 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 13 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:01,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 635 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:36:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-20 11:36:01,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-20 11:36:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 61 states have (on average 1.098360655737705) internal successors, (67), 62 states have internal predecessors, (67), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:36:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2022-11-20 11:36:01,726 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 84 [2022-11-20 11:36:01,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:01,726 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2022-11-20 11:36:01,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 11:36:01,727 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2022-11-20 11:36:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 11:36:01,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:01,728 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:01,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:36:01,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:36:01,939 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:36:01,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:01,939 INFO L85 PathProgramCache]: Analyzing trace with hash -19715100, now seen corresponding path program 1 times [2022-11-20 11:36:01,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:01,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108662186] [2022-11-20 11:36:01,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:01,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:03,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:36:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:04,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:36:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:04,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:36:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:04,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:36:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:04,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:36:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:04,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:36:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:04,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:36:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:04,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:36:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:04,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:36:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 11:36:04,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:04,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108662186] [2022-11-20 11:36:04,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108662186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:04,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:36:04,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:36:04,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895418354] [2022-11-20 11:36:04,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:04,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:36:04,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:04,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:36:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:36:04,395 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-20 11:36:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:05,249 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2022-11-20 11:36:05,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:36:05,249 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 86 [2022-11-20 11:36:05,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:05,251 INFO L225 Difference]: With dead ends: 100 [2022-11-20 11:36:05,251 INFO L226 Difference]: Without dead ends: 98 [2022-11-20 11:36:05,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:36:05,252 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 107 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:05,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 149 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:36:05,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-20 11:36:05,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2022-11-20 11:36:05,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 64 states have (on average 1.09375) internal successors, (70), 65 states have internal predecessors, (70), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:36:05,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2022-11-20 11:36:05,265 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 86 [2022-11-20 11:36:05,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:05,266 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2022-11-20 11:36:05,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-20 11:36:05,266 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2022-11-20 11:36:05,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 11:36:05,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:05,268 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:05,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:36:05,269 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:36:05,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:05,269 INFO L85 PathProgramCache]: Analyzing trace with hash -449956535, now seen corresponding path program 1 times [2022-11-20 11:36:05,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:05,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418716293] [2022-11-20 11:36:05,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:05,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:06,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:36:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:06,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:36:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:06,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:36:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:06,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:36:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:06,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:36:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:06,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:36:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:06,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:36:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:06,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:36:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:06,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:36:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:06,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 11:36:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 11:36:06,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:06,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418716293] [2022-11-20 11:36:06,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418716293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:06,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:36:06,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:36:06,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867887238] [2022-11-20 11:36:06,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:06,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:36:06,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:06,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:36:06,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:36:06,757 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:36:07,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:07,487 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2022-11-20 11:36:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:36:07,488 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-11-20 11:36:07,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:07,490 INFO L225 Difference]: With dead ends: 104 [2022-11-20 11:36:07,490 INFO L226 Difference]: Without dead ends: 100 [2022-11-20 11:36:07,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:36:07,491 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 100 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:07,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 154 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:36:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-20 11:36:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2022-11-20 11:36:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 16 states have call successors, (16), 12 states have call predecessors, (16), 11 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:36:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2022-11-20 11:36:07,504 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 92 [2022-11-20 11:36:07,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:07,504 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2022-11-20 11:36:07,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:36:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2022-11-20 11:36:07,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 11:36:07,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:07,507 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:07,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:36:07,507 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:36:07,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:07,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1438296044, now seen corresponding path program 1 times [2022-11-20 11:36:07,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:07,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307860795] [2022-11-20 11:36:07,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:07,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:09,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:36:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:09,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:36:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:09,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:36:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:09,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:36:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:36:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:09,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:36:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:36:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:36:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:09,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:36:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 11:36:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:09,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 11:36:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 11:36:09,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:09,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307860795] [2022-11-20 11:36:09,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307860795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:09,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:36:09,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:36:09,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650762407] [2022-11-20 11:36:09,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:09,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:36:09,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:09,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:36:09,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:36:09,770 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 12 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-20 11:36:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:10,570 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2022-11-20 11:36:10,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:36:10,571 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 98 [2022-11-20 11:36:10,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:10,572 INFO L225 Difference]: With dead ends: 100 [2022-11-20 11:36:10,572 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:36:10,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:36:10,573 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 100 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:10,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 168 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:36:10,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:36:10,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:36:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:36:10,575 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 98 [2022-11-20 11:36:10,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:10,575 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:36:10,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-20 11:36:10,576 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:36:10,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:36:10,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:36:10,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:36:10,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:36:11,392 INFO L895 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6876 6881) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|))) [2022-11-20 11:36:11,392 INFO L899 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6876 6881) no Hoare annotation was computed. [2022-11-20 11:36:11,392 INFO L899 garLoopResultBuilder]: For program point L6877-1(lines 6877 6879) no Hoare annotation was computed. [2022-11-20 11:36:11,392 INFO L895 garLoopResultBuilder]: At program point L6877(lines 6877 6879) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (and (= |bounded_malloc_#in~size| bounded_malloc_~size) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|))) [2022-11-20 11:36:11,393 INFO L899 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6876 6881) no Hoare annotation was computed. [2022-11-20 11:36:11,393 INFO L902 garLoopResultBuilder]: At program point aws_byte_buf_is_validENTRY(lines 7179 7185) the Hoare annotation is: true [2022-11-20 11:36:11,393 INFO L899 garLoopResultBuilder]: For program point L7181-3(line 7181) no Hoare annotation was computed. [2022-11-20 11:36:11,393 INFO L899 garLoopResultBuilder]: For program point L7181-1(line 7181) no Hoare annotation was computed. [2022-11-20 11:36:11,393 INFO L899 garLoopResultBuilder]: For program point L7181(lines 7181 7184) no Hoare annotation was computed. [2022-11-20 11:36:11,394 INFO L899 garLoopResultBuilder]: For program point L7181-7(lines 7181 7184) no Hoare annotation was computed. [2022-11-20 11:36:11,394 INFO L899 garLoopResultBuilder]: For program point L7181-6(lines 7181 7182) no Hoare annotation was computed. [2022-11-20 11:36:11,394 INFO L899 garLoopResultBuilder]: For program point L7181-4(lines 7181 7182) no Hoare annotation was computed. [2022-11-20 11:36:11,394 INFO L899 garLoopResultBuilder]: For program point L7181-11(lines 7181 7184) no Hoare annotation was computed. [2022-11-20 11:36:11,394 INFO L899 garLoopResultBuilder]: For program point L7181-9(lines 7181 7184) no Hoare annotation was computed. [2022-11-20 11:36:11,394 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_is_validFINAL(lines 7179 7185) no Hoare annotation was computed. [2022-11-20 11:36:11,394 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_is_validEXIT(lines 7179 7185) no Hoare annotation was computed. [2022-11-20 11:36:11,394 INFO L899 garLoopResultBuilder]: For program point L7184-2(line 7184) no Hoare annotation was computed. [2022-11-20 11:36:11,395 INFO L899 garLoopResultBuilder]: For program point L7184(line 7184) no Hoare annotation was computed. [2022-11-20 11:36:11,395 INFO L899 garLoopResultBuilder]: For program point L7184-6(line 7184) no Hoare annotation was computed. [2022-11-20 11:36:11,395 INFO L899 garLoopResultBuilder]: For program point L7184-4(line 7184) no Hoare annotation was computed. [2022-11-20 11:36:11,395 INFO L899 garLoopResultBuilder]: For program point L7184-3(line 7184) no Hoare annotation was computed. [2022-11-20 11:36:11,395 INFO L899 garLoopResultBuilder]: For program point L7184-8(line 7184) no Hoare annotation was computed. [2022-11-20 11:36:11,395 INFO L899 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2022-11-20 11:36:11,395 INFO L899 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2022-11-20 11:36:11,395 INFO L902 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2022-11-20 11:36:11,395 INFO L899 garLoopResultBuilder]: For program point L7056-1(lines 7056 7058) no Hoare annotation was computed. [2022-11-20 11:36:11,395 INFO L895 garLoopResultBuilder]: At program point L7056(lines 7056 7058) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (= |old(#valid)| |#valid|)) [2022-11-20 11:36:11,396 INFO L899 garLoopResultBuilder]: For program point aws_mem_releaseEXIT(lines 7055 7068) no Hoare annotation was computed. [2022-11-20 11:36:11,396 INFO L895 garLoopResultBuilder]: At program point aws_mem_releaseENTRY(lines 7055 7068) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (= |old(#valid)| |#valid|)) [2022-11-20 11:36:11,396 INFO L899 garLoopResultBuilder]: For program point L7063(lines 7063 7067) no Hoare annotation was computed. [2022-11-20 11:36:11,396 INFO L899 garLoopResultBuilder]: For program point L7059-1(lines 7059 7061) no Hoare annotation was computed. [2022-11-20 11:36:11,396 INFO L895 garLoopResultBuilder]: At program point L7059(lines 7059 7061) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (= |old(#valid)| |#valid|)) [2022-11-20 11:36:11,396 INFO L899 garLoopResultBuilder]: For program point L7063-2(lines 7055 7068) no Hoare annotation was computed. [2022-11-20 11:36:11,396 INFO L899 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2022-11-20 11:36:11,396 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2022-11-20 11:36:11,397 INFO L899 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2022-11-20 11:36:11,397 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2022-11-20 11:36:11,397 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6883 6885) no Hoare annotation was computed. [2022-11-20 11:36:11,397 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6883 6885) no Hoare annotation was computed. [2022-11-20 11:36:11,397 INFO L902 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6883 6885) the Hoare annotation is: true [2022-11-20 11:36:11,397 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:36:11,398 INFO L899 garLoopResultBuilder]: For program point L8770-1(lines 8770 8772) no Hoare annotation was computed. [2022-11-20 11:36:11,398 INFO L899 garLoopResultBuilder]: For program point L6613-1(line 6613) no Hoare annotation was computed. [2022-11-20 11:36:11,398 INFO L895 garLoopResultBuilder]: At program point L6613(line 6613) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_#t~mem473#1| (select (select |#memory_int| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (+ |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 16))) (< 0 |#StackHeapBarrier|)) [2022-11-20 11:36:11,398 INFO L902 garLoopResultBuilder]: At program point L8779(line 8779) the Hoare annotation is: true [2022-11-20 11:36:11,398 INFO L899 garLoopResultBuilder]: For program point L6609(lines 6609 6614) no Hoare annotation was computed. [2022-11-20 11:36:11,399 INFO L895 garLoopResultBuilder]: At program point L8773(lines 8773 8775) the Hoare annotation is: (let ((.cse1 (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) (.cse3 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse2 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse0 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse4 (+ |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 24))) (and (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= 0 (select .cse0 .cse1)) (= (select .cse2 .cse1) 0) (= (select .cse3 (+ 16 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~mem1143#1.offset| 0) (= (select .cse3 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (= (select .cse2 .cse4) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~mem1143#1.base| 0) (= (select .cse0 .cse4) 0) (< 0 |#StackHeapBarrier|))) [2022-11-20 11:36:11,399 INFO L899 garLoopResultBuilder]: For program point L8773-1(lines 8773 8775) no Hoare annotation was computed. [2022-11-20 11:36:11,400 INFO L895 garLoopResultBuilder]: At program point L8777(line 8777) the Hoare annotation is: (let ((.cse1 (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) (.cse3 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse2 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse0 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse4 (+ |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 24))) (and (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= 0 (select .cse0 .cse1)) (= (select .cse2 .cse1) 0) (= (select .cse3 (+ 16 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= (select .cse3 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~mem1145#1| 0) (= (select .cse2 .cse4) 0) (= (select .cse0 .cse4) 0) (< 0 |#StackHeapBarrier|))) [2022-11-20 11:36:11,400 INFO L899 garLoopResultBuilder]: For program point L8777-1(line 8777) no Hoare annotation was computed. [2022-11-20 11:36:11,400 INFO L899 garLoopResultBuilder]: For program point L8767-2(line 8767) no Hoare annotation was computed. [2022-11-20 11:36:11,400 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:36:11,400 INFO L899 garLoopResultBuilder]: For program point L8763(lines 8763 8778) no Hoare annotation was computed. [2022-11-20 11:36:11,401 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:36:11,401 INFO L895 garLoopResultBuilder]: At program point L8769(line 8769) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (not (= (mod (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 18446744073709551616) 0)) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0)) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (< 0 |#StackHeapBarrier|)) [2022-11-20 11:36:11,401 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:36:11,401 INFO L899 garLoopResultBuilder]: For program point L8769-1(line 8769) no Hoare annotation was computed. [2022-11-20 11:36:11,401 INFO L895 garLoopResultBuilder]: At program point L8767(line 8767) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0)) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (<= (mod (select (select |#memory_int| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (+ |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 16)) 18446744073709551616) 36028797018963967) (< 0 |#StackHeapBarrier|)) [2022-11-20 11:36:11,402 INFO L895 garLoopResultBuilder]: At program point L8767-1(line 8767) the Hoare annotation is: (let ((.cse0 (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse1 (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) (.cse2 (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse3 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0))) (.cse4 (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0)) (.cse5 (< 0 |#StackHeapBarrier|))) (or (and .cse0 (not (= (mod (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 18446744073709551616) 0)) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~ret1141#1| 0) .cse4 .cse5))) [2022-11-20 11:36:11,402 INFO L895 garLoopResultBuilder]: At program point L6610(line 6610) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (< 0 |#StackHeapBarrier|)) [2022-11-20 11:36:11,402 INFO L899 garLoopResultBuilder]: For program point L6612-1(line 6612) no Hoare annotation was computed. [2022-11-20 11:36:11,402 INFO L895 garLoopResultBuilder]: At program point L6612(line 6612) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (< 0 |#StackHeapBarrier|)) [2022-11-20 11:36:11,403 INFO L899 garLoopResultBuilder]: For program point L6610-3(lines 6610 6612) no Hoare annotation was computed. [2022-11-20 11:36:11,403 INFO L899 garLoopResultBuilder]: For program point L6610-1(lines 6610 6612) no Hoare annotation was computed. [2022-11-20 11:36:11,404 INFO L895 garLoopResultBuilder]: At program point L8770(lines 8770 8772) the Hoare annotation is: (let ((.cse1 (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) (.cse3 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse2 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse0 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse4 (+ |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 24))) (and (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= 0 (select .cse0 .cse1)) (= (select .cse2 .cse1) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~mem1142#1.base| 0) (= (select .cse3 (+ 16 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~mem1142#1.offset| 0) (= (select .cse3 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (= (select .cse2 .cse4) 0) (= (select .cse0 .cse4) 0) (< 0 |#StackHeapBarrier|))) [2022-11-20 11:36:11,404 INFO L895 garLoopResultBuilder]: At program point L8776(line 8776) the Hoare annotation is: (let ((.cse1 (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) (.cse3 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse2 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse0 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse4 (+ |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 24))) (and (<= 2 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= 0 (select .cse0 .cse1)) (= (select .cse2 .cse1) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~mem1144#1| 0) (= (select .cse3 (+ 16 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= (select .cse3 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (= (select .cse2 .cse4) 0) (= (select .cse0 .cse4) 0) (< 0 |#StackHeapBarrier|))) [2022-11-20 11:36:11,405 INFO L899 garLoopResultBuilder]: For program point L8776-1(line 8776) no Hoare annotation was computed. [2022-11-20 11:36:11,405 INFO L895 garLoopResultBuilder]: At program point aws_byte_buf_clean_upENTRY(lines 7203 7216) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (and (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|))) [2022-11-20 11:36:11,406 INFO L899 garLoopResultBuilder]: For program point L7205-4(lines 7205 7207) no Hoare annotation was computed. [2022-11-20 11:36:11,407 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_clean_upFINAL(lines 7203 7216) no Hoare annotation was computed. [2022-11-20 11:36:11,407 INFO L895 garLoopResultBuilder]: At program point L7206(line 7206) the Hoare annotation is: (let ((.cse0 (= |old(#memory_real)| |#memory_real|)) (.cse1 (= |#memory_int| |old(#memory_int)|)) (.cse2 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (.cse3 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse4 (= |old(#valid)| |#valid|))) (or (not (< 0 |#StackHeapBarrier|)) (and .cse0 .cse1 .cse2 (<= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base) .cse3 .cse4 (<= |aws_byte_buf_clean_up_#in~buf.base| 0)) (and .cse0 .cse1 .cse2 (= |aws_byte_buf_clean_up_#in~buf.offset| aws_byte_buf_clean_up_~buf.offset) .cse3 .cse4 (= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base)))) [2022-11-20 11:36:11,407 INFO L899 garLoopResultBuilder]: For program point L7204-2(line 7204) no Hoare annotation was computed. [2022-11-20 11:36:11,408 INFO L895 garLoopResultBuilder]: At program point L7204-1(line 7204) the Hoare annotation is: (let ((.cse0 (= |old(#memory_real)| |#memory_real|)) (.cse1 (= |#memory_int| |old(#memory_int)|)) (.cse2 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (.cse3 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse4 (= |old(#valid)| |#valid|))) (or (not (< 0 |#StackHeapBarrier|)) (and .cse0 .cse1 .cse2 (<= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base) .cse3 .cse4 (<= |aws_byte_buf_clean_up_#in~buf.base| 0)) (and .cse0 .cse1 .cse2 (= |aws_byte_buf_clean_up_#in~buf.offset| aws_byte_buf_clean_up_~buf.offset) .cse3 .cse4 (= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base)))) [2022-11-20 11:36:11,408 INFO L899 garLoopResultBuilder]: For program point L7205-2(lines 7205 7207) no Hoare annotation was computed. [2022-11-20 11:36:11,408 INFO L895 garLoopResultBuilder]: At program point L7204(line 7204) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (and (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |aws_byte_buf_clean_up_#in~buf.offset| aws_byte_buf_clean_up_~buf.offset) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|) (= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base))) [2022-11-20 11:36:11,408 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_clean_upEXIT(lines 7203 7216) no Hoare annotation was computed. [2022-11-20 11:36:11,409 INFO L899 garLoopResultBuilder]: For program point L7205(line 7205) no Hoare annotation was computed. [2022-11-20 11:36:11,409 INFO L899 garLoopResultBuilder]: For program point L7206-1(line 7206) no Hoare annotation was computed. [2022-11-20 11:36:11,409 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2022-11-20 11:36:11,409 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2022-11-20 11:36:11,409 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2022-11-20 11:36:11,410 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2022-11-20 11:36:11,410 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2022-11-20 11:36:11,410 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2022-11-20 11:36:11,414 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:11,416 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:36:11,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:36:11 BoogieIcfgContainer [2022-11-20 11:36:11,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:36:11,429 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:36:11,429 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:36:11,429 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:36:11,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:00" (3/4) ... [2022-11-20 11:36:11,433 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:36:11,441 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2022-11-20 11:36:11,441 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_is_valid [2022-11-20 11:36:11,441 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2022-11-20 11:36:11,442 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_mem_release [2022-11-20 11:36:11,442 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-20 11:36:11,442 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_clean_up [2022-11-20 11:36:11,442 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 11:36:11,442 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2022-11-20 11:36:11,469 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2022-11-20 11:36:11,472 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 55 nodes and edges [2022-11-20 11:36:11,474 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-20 11:36:11,475 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-20 11:36:11,476 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 11:36:11,477 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 11:36:11,478 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:36:11,479 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:36:11,946 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:36:11,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:36:11,947 INFO L158 Benchmark]: Toolchain (without parser) took 77593.28ms. Allocated memory was 169.9MB in the beginning and 1.1GB in the end (delta: 887.1MB). Free memory was 128.0MB in the beginning and 890.4MB in the end (delta: -762.4MB). Peak memory consumption was 684.3MB. Max. memory is 16.1GB. [2022-11-20 11:36:11,948 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 123.7MB. Free memory was 93.0MB in the beginning and 93.0MB in the end (delta: 66.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:36:11,948 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3610.81ms. Allocated memory was 169.9MB in the beginning and 218.1MB in the end (delta: 48.2MB). Free memory was 128.0MB in the beginning and 141.0MB in the end (delta: -13.1MB). Peak memory consumption was 113.5MB. Max. memory is 16.1GB. [2022-11-20 11:36:11,949 INFO L158 Benchmark]: Boogie Procedure Inliner took 290.82ms. Allocated memory is still 218.1MB. Free memory was 141.0MB in the beginning and 130.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:36:11,949 INFO L158 Benchmark]: Boogie Preprocessor took 168.08ms. Allocated memory is still 218.1MB. Free memory was 130.6MB in the beginning and 123.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 11:36:11,949 INFO L158 Benchmark]: RCFGBuilder took 2060.42ms. Allocated memory is still 218.1MB. Free memory was 123.3MB in the beginning and 118.9MB in the end (delta: 4.4MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2022-11-20 11:36:11,950 INFO L158 Benchmark]: TraceAbstraction took 70934.90ms. Allocated memory was 218.1MB in the beginning and 1.1GB in the end (delta: 838.9MB). Free memory was 117.8MB in the beginning and 389.1MB in the end (delta: -271.3MB). Peak memory consumption was 568.6MB. Max. memory is 16.1GB. [2022-11-20 11:36:11,950 INFO L158 Benchmark]: Witness Printer took 517.99ms. Allocated memory is still 1.1GB. Free memory was 389.1MB in the beginning and 890.4MB in the end (delta: -501.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-20 11:36:11,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 123.7MB. Free memory was 93.0MB in the beginning and 93.0MB in the end (delta: 66.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3610.81ms. Allocated memory was 169.9MB in the beginning and 218.1MB in the end (delta: 48.2MB). Free memory was 128.0MB in the beginning and 141.0MB in the end (delta: -13.1MB). Peak memory consumption was 113.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 290.82ms. Allocated memory is still 218.1MB. Free memory was 141.0MB in the beginning and 130.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 168.08ms. Allocated memory is still 218.1MB. Free memory was 130.6MB in the beginning and 123.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2060.42ms. Allocated memory is still 218.1MB. Free memory was 123.3MB in the beginning and 118.9MB in the end (delta: 4.4MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. * TraceAbstraction took 70934.90ms. Allocated memory was 218.1MB in the beginning and 1.1GB in the end (delta: 838.9MB). Free memory was 117.8MB in the beginning and 389.1MB in the end (delta: -271.3MB). Peak memory consumption was 568.6MB. Max. memory is 16.1GB. * Witness Printer took 517.99ms. Allocated memory is still 1.1GB. Free memory was 389.1MB in the beginning and 890.4MB in the end (delta: -501.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 70.8s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 11.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1559 SdHoareTripleChecker+Valid, 7.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1516 mSDsluCounter, 4435 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 251 IncrementalHoareTripleChecker+Unchecked, 3578 mSDsCounter, 470 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5794 IncrementalHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 470 mSolverCounterUnsat, 857 mSDtfsCounter, 5794 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1542 GetRequests, 1234 SyntacticMatches, 9 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=10, InterpolantAutomatonStates: 170, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 90 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 25 LocationsWithAnnotation, 198 PreInvPairs, 257 NumberOfFragments, 693 HoareAnnotationTreeSize, 198 FomulaSimplifications, 93 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 25 FomulaSimplificationsInter, 886 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 6.1s SatisfiabilityAnalysisTime, 46.4s InterpolantComputationTime, 1926 NumberOfCodeBlocks, 1926 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2203 ConstructedInterpolants, 54 QuantifiedInterpolants, 7115 SizeOfPredicates, 88 NumberOfNonLiveVariables, 25182 ConjunctsInSsa, 278 ConjunctsInUnsatCore, 29 InterpolantComputations, 14 PerfectInterpolantSequences, 624/781 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8779]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 11:36:11,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec94240-cd24-4410-9a33-7eae908a4f85/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE