./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 e04fb08f 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_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/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_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 11:23:52,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:23:52,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:23:53,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:23:53,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:23:53,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:23:53,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:23:53,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:23:53,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:23:53,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:23:53,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:23:53,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:23:53,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:23:53,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:23:53,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:23:53,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:23:53,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:23:53,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:23:53,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:23:53,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:23:53,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:23:53,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:23:53,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:23:53,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:23:53,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:23:53,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:23:53,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:23:53,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:23:53,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:23:53,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:23:53,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:23:53,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:23:53,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:23:53,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:23:53,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:23:53,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:23:53,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:23:53,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:23:53,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:23:53,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:23:53,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:23:53,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:23:53,128 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:23:53,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:23:53,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:23:53,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:23:53,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:23:53,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:23:53,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:23:53,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:23:53,131 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:23:53,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:23:53,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:23:53,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:23:53,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:23:53,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:23:53,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:23:53,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:23:53,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:23:53,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:23:53,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:23:53,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:23:53,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:23:53,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:23:53,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:23:53,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:23:53,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:23:53,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:23:53,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:23:53,138 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:23:53,138 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:23:53,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:23:53,138 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_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2c8100e1f648cee1922c84a2421989bafb670d4445ddc160c17e3cd878eaa49 [2022-11-16 11:23:53,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:23:53,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:23:53,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:23:53,440 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:23:53,441 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:23:53,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2022-11-16 11:23:53,519 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/data/f511f20ba/679e6fe128fe467eb8fc96c6769ffc1d/FLAGecf7ac45b [2022-11-16 11:23:54,466 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:23:54,467 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2022-11-16 11:23:54,502 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/data/f511f20ba/679e6fe128fe467eb8fc96c6769ffc1d/FLAGecf7ac45b [2022-11-16 11:23:54,956 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/data/f511f20ba/679e6fe128fe467eb8fc96c6769ffc1d [2022-11-16 11:23:54,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:23:54,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:23:54,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:23:54,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:23:54,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:23:54,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:23:54" (1/1) ... [2022-11-16 11:23:54,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56fc72c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:54, skipping insertion in model container [2022-11-16 11:23:54,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:23:54" (1/1) ... [2022-11-16 11:23:54,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:23:55,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:23:55,407 WARN L229 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_e29b500c-bd9a-4004-8234-4a2bf2725762/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2022-11-16 11:23:55,414 WARN L229 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_e29b500c-bd9a-4004-8234-4a2bf2725762/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2022-11-16 11:23:56,336 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:56,339 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:56,340 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:56,341 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:56,342 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:56,356 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:56,356 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:56,358 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:56,359 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:56,746 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:23:56,748 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:23:56,749 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:23:56,751 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:23:56,753 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:23:56,753 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:23:56,755 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:23:56,756 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:23:56,757 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:23:56,757 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:23:56,983 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:23:57,153 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:57,155 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:57,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:23:57,330 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:23:57,360 WARN L229 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_e29b500c-bd9a-4004-8234-4a2bf2725762/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2022-11-16 11:23:57,360 WARN L229 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_e29b500c-bd9a-4004-8234-4a2bf2725762/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2022-11-16 11:23:57,411 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:57,415 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:57,416 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:57,417 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:57,418 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:57,428 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:57,428 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:57,430 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:57,431 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:57,485 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:23:57,486 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:23:57,487 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:23:57,488 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:23:57,489 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:23:57,489 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:23:57,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:23:57,491 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:23:57,491 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:23:57,492 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:23:57,529 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:23:57,595 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:57,595 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:23:57,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:23:57,920 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:23:57,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:57 WrapperNode [2022-11-16 11:23:57,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:23:57,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:23:57,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:23:57,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:23:57,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:57" (1/1) ... [2022-11-16 11:23:58,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:57" (1/1) ... [2022-11-16 11:23:58,149 INFO L138 Inliner]: procedures = 691, calls = 2502, calls flagged for inlining = 53, calls inlined = 4, statements flattened = 753 [2022-11-16 11:23:58,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:23:58,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:23:58,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:23:58,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:23:58,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:57" (1/1) ... [2022-11-16 11:23:58,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:57" (1/1) ... [2022-11-16 11:23:58,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:57" (1/1) ... [2022-11-16 11:23:58,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:57" (1/1) ... [2022-11-16 11:23:58,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:57" (1/1) ... [2022-11-16 11:23:58,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:57" (1/1) ... [2022-11-16 11:23:58,215 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:57" (1/1) ... [2022-11-16 11:23:58,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:57" (1/1) ... [2022-11-16 11:23:58,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:23:58,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:23:58,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:23:58,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:23:58,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:57" (1/1) ... [2022-11-16 11:23:58,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:23:58,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:23:58,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:23:58,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:23:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_clean_up [2022-11-16 11:23:58,368 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_clean_up [2022-11-16 11:23:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-16 11:23:58,368 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-16 11:23:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:23:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 11:23:58,369 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 11:23:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:23:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:23:58,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:23:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:23:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:23:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:23:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:23:58,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:23:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 11:23:58,373 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 11:23:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-16 11:23:58,373 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-16 11:23:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:23:58,373 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:23:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:23:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:23:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:23:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 11:23:58,375 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 11:23:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:23:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:23:58,673 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:23:58,676 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:24:00,054 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:24:00,061 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:24:00,061 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:24:00,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:24:00 BoogieIcfgContainer [2022-11-16 11:24:00,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:24:00,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:24:00,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:24:00,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:24:00,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:23:54" (1/3) ... [2022-11-16 11:24:00,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4d4bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:24:00, skipping insertion in model container [2022-11-16 11:24:00,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:57" (2/3) ... [2022-11-16 11:24:00,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4d4bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:24:00, skipping insertion in model container [2022-11-16 11:24:00,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:24:00" (3/3) ... [2022-11-16 11:24:00,072 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_harness.i [2022-11-16 11:24:00,092 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:24:00,092 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:24:00,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:24:00,193 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;@4a5127bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:24:00,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:24:00,198 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) [2022-11-16 11:24:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:24:00,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:00,210 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] [2022-11-16 11:24:00,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:00,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash 877800461, now seen corresponding path program 1 times [2022-11-16 11:24:00,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:00,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886408128] [2022-11-16 11:24:00,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:00,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:00,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:00,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:01,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:24:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:24:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:01,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:01,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:24:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-16 11:24:01,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:01,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886408128] [2022-11-16 11:24:01,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886408128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:01,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:01,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:24:01,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546535841] [2022-11-16 11:24:01,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:01,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:24:01,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:01,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:24:01,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:24:01,177 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) [2022-11-16 11:24:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:01,634 INFO L93 Difference]: Finished difference Result 158 states and 207 transitions. [2022-11-16 11:24:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:24:01,637 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 [2022-11-16 11:24:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:01,646 INFO L225 Difference]: With dead ends: 158 [2022-11-16 11:24:01,647 INFO L226 Difference]: Without dead ends: 85 [2022-11-16 11:24:01,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:24:01,653 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 98 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:01,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 67 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:24:01,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-16 11:24:01,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2022-11-16 11:24:01,696 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) [2022-11-16 11:24:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2022-11-16 11:24:01,700 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 56 [2022-11-16 11:24:01,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:01,700 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2022-11-16 11:24:01,701 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) [2022-11-16 11:24:01,701 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2022-11-16 11:24:01,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:24:01,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:01,704 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] [2022-11-16 11:24:01,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:24:01,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:01,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:01,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1602789575, now seen corresponding path program 1 times [2022-11-16 11:24:01,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:01,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630132293] [2022-11-16 11:24:01,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:01,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:02,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:02,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:02,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:02,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:02,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:24:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:02,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:24:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:02,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:02,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:24:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:24:02,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:02,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630132293] [2022-11-16 11:24:02,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630132293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:02,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419154359] [2022-11-16 11:24:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:02,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:02,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:02,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:02,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:24:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:03,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:24:03,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:24:03,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:03,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419154359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:03,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:24:03,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-16 11:24:03,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216121720] [2022-11-16 11:24:03,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:03,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:03,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:03,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:03,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:24:03,524 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) [2022-11-16 11:24:03,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:03,643 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2022-11-16 11:24:03,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:24:03,644 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 [2022-11-16 11:24:03,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:03,645 INFO L225 Difference]: With dead ends: 139 [2022-11-16 11:24:03,645 INFO L226 Difference]: Without dead ends: 82 [2022-11-16 11:24:03,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:24:03,647 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 [2022-11-16 11:24:03,648 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] [2022-11-16 11:24:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-16 11:24:03,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-11-16 11:24:03,660 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) [2022-11-16 11:24:03,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2022-11-16 11:24:03,662 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 56 [2022-11-16 11:24:03,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:03,662 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2022-11-16 11:24:03,662 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) [2022-11-16 11:24:03,663 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2022-11-16 11:24:03,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:24:03,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:03,664 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] [2022-11-16 11:24:03,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:03,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 11:24:03,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:03,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:03,875 INFO L85 PathProgramCache]: Analyzing trace with hash -737763694, now seen corresponding path program 1 times [2022-11-16 11:24:03,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:03,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859194749] [2022-11-16 11:24:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:03,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:04,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:04,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:04,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:24:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:05,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:24:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:05,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:05,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:24:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:05,255 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:24:05,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:05,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859194749] [2022-11-16 11:24:05,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859194749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:05,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347602654] [2022-11-16 11:24:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:05,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:05,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:05,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:05,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:24:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:05,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:24:05,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:24:06,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:06,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347602654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:06,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:24:06,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-11-16 11:24:06,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729313890] [2022-11-16 11:24:06,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:06,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:24:06,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:06,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:24:06,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:24:06,056 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) [2022-11-16 11:24:06,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:06,349 INFO L93 Difference]: Finished difference Result 105 states and 129 transitions. [2022-11-16 11:24:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:24:06,351 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 [2022-11-16 11:24:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:06,352 INFO L225 Difference]: With dead ends: 105 [2022-11-16 11:24:06,352 INFO L226 Difference]: Without dead ends: 79 [2022-11-16 11:24:06,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:24:06,354 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:06,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 389 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:24:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-16 11:24:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-16 11:24:06,368 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) [2022-11-16 11:24:06,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2022-11-16 11:24:06,370 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 62 [2022-11-16 11:24:06,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:06,372 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2022-11-16 11:24:06,373 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) [2022-11-16 11:24:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2022-11-16 11:24:06,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:24:06,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:06,381 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] [2022-11-16 11:24:06,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:06,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:06,600 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:06,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:06,601 INFO L85 PathProgramCache]: Analyzing trace with hash -218893667, now seen corresponding path program 1 times [2022-11-16 11:24:06,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:06,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104784399] [2022-11-16 11:24:06,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:06,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:08,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:08,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:08,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:24:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:24:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:08,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:08,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:24:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:24:08,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:08,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104784399] [2022-11-16 11:24:08,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104784399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:08,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592078841] [2022-11-16 11:24:08,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:08,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:08,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:08,789 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:08,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:24:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:09,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 11:24:09,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:09,429 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 11 treesize of output 7 [2022-11-16 11:24:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:24:09,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:10,100 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 [2022-11-16 11:24:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 11:24:10,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592078841] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:10,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:24:10,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 11] total 22 [2022-11-16 11:24:10,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700028757] [2022-11-16 11:24:10,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:10,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:24:10,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:10,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:24:10,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:24:10,222 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-16 11:24:10,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:10,892 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2022-11-16 11:24:10,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:24:10,893 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 68 [2022-11-16 11:24:10,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:10,894 INFO L225 Difference]: With dead ends: 97 [2022-11-16 11:24:10,894 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 11:24:10,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:24:10,896 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 74 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:10,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 115 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:24:10,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 11:24:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-16 11:24:10,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.2) internal successors, (66), 56 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) [2022-11-16 11:24:10,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 97 transitions. [2022-11-16 11:24:10,909 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 97 transitions. Word has length 68 [2022-11-16 11:24:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:10,910 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 97 transitions. [2022-11-16 11:24:10,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-16 11:24:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 97 transitions. [2022-11-16 11:24:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:24:10,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:10,911 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] [2022-11-16 11:24:10,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:11,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:11,121 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:11,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:11,122 INFO L85 PathProgramCache]: Analyzing trace with hash -611920677, now seen corresponding path program 1 times [2022-11-16 11:24:11,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:11,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957794876] [2022-11-16 11:24:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:11,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:12,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:12,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:24:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:12,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:24:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:12,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:24:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:24:12,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:12,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957794876] [2022-11-16 11:24:12,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957794876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:12,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184804098] [2022-11-16 11:24:12,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:13,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:13,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:13,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:13,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:24:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:13,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 11:24:13,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:13,639 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 [2022-11-16 11:24:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:24:14,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:14,736 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 [2022-11-16 11:24:14,788 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:24:14,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184804098] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:14,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:24:14,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12, 14] total 26 [2022-11-16 11:24:14,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716184760] [2022-11-16 11:24:14,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:14,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:24:14,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:14,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:24:14,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:24:14,791 INFO L87 Difference]: Start difference. First operand 80 states and 97 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 6 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-16 11:24:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:15,791 INFO L93 Difference]: Finished difference Result 152 states and 188 transitions. [2022-11-16 11:24:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:24:15,792 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 6 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 68 [2022-11-16 11:24:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:15,793 INFO L225 Difference]: With dead ends: 152 [2022-11-16 11:24:15,793 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 11:24:15,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 135 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:24:15,795 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 131 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:15,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 228 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:24:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 11:24:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-16 11:24:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 56 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) [2022-11-16 11:24:15,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 96 transitions. [2022-11-16 11:24:15,807 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 96 transitions. Word has length 68 [2022-11-16 11:24:15,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:15,808 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 96 transitions. [2022-11-16 11:24:15,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 6 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-16 11:24:15,808 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 96 transitions. [2022-11-16 11:24:15,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 11:24:15,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:15,809 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] [2022-11-16 11:24:15,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:16,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:16,019 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:16,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:16,019 INFO L85 PathProgramCache]: Analyzing trace with hash 707152747, now seen corresponding path program 1 times [2022-11-16 11:24:16,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:16,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103019957] [2022-11-16 11:24:16,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:16,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:16,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:16,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:16,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:16,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:17,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:24:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:17,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:24:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:24:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 11:24:17,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:17,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103019957] [2022-11-16 11:24:17,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103019957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:17,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786345365] [2022-11-16 11:24:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:17,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:17,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:17,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:17,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:24:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:17,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 2530 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:24:17,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:24:17,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:17,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786345365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:17,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:24:17,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-11-16 11:24:17,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052008786] [2022-11-16 11:24:17,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:17,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:24:17,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:17,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:24:17,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:24:17,944 INFO L87 Difference]: Start difference. First operand 80 states and 96 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 11:24:18,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:18,131 INFO L93 Difference]: Finished difference Result 152 states and 189 transitions. [2022-11-16 11:24:18,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:24:18,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (9), 2 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 76 [2022-11-16 11:24:18,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:18,133 INFO L225 Difference]: With dead ends: 152 [2022-11-16 11:24:18,133 INFO L226 Difference]: Without dead ends: 94 [2022-11-16 11:24:18,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:24:18,134 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:18,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 327 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-11-16 11:24:18,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-16 11:24:18,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2022-11-16 11:24:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 61 states have internal predecessors, (71), 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) [2022-11-16 11:24:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 102 transitions. [2022-11-16 11:24:18,154 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 102 transitions. Word has length 76 [2022-11-16 11:24:18,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:18,156 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 102 transitions. [2022-11-16 11:24:18,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 11:24:18,156 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 102 transitions. [2022-11-16 11:24:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 11:24:18,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:18,159 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] [2022-11-16 11:24:18,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:18,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:18,368 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:18,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:18,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1782666009, now seen corresponding path program 1 times [2022-11-16 11:24:18,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:18,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907564186] [2022-11-16 11:24:18,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:18,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:19,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:19,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:19,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:19,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:24:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:19,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:24:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:19,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:24:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:19,431 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 11:24:19,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:19,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907564186] [2022-11-16 11:24:19,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907564186] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:19,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071311212] [2022-11-16 11:24:19,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:19,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:19,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:19,435 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:19,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:24:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:19,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-16 11:24:20,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:20,244 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 [2022-11-16 11:24:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:24:21,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:21,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071311212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:21,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:24:21,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [11] total 26 [2022-11-16 11:24:21,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216830890] [2022-11-16 11:24:21,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:21,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:24:21,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:21,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:24:21,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:24:21,064 INFO L87 Difference]: Start difference. First operand 85 states and 102 transitions. Second operand has 19 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 6 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-16 11:24:21,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:21,343 INFO L93 Difference]: Finished difference Result 163 states and 197 transitions. [2022-11-16 11:24:21,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:24:21,344 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 6 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) Word has length 76 [2022-11-16 11:24:21,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:21,345 INFO L225 Difference]: With dead ends: 163 [2022-11-16 11:24:21,345 INFO L226 Difference]: Without dead ends: 95 [2022-11-16 11:24:21,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:24:21,347 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 19 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:21,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 730 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 61 Unchecked, 0.2s Time] [2022-11-16 11:24:21,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-16 11:24:21,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-16 11:24:21,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 70 states have internal predecessors, (83), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 11:24:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2022-11-16 11:24:21,371 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 76 [2022-11-16 11:24:21,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:21,371 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2022-11-16 11:24:21,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 6 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-16 11:24:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2022-11-16 11:24:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 11:24:21,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:21,380 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] [2022-11-16 11:24:21,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:21,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:21,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:21,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:21,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1017039915, now seen corresponding path program 1 times [2022-11-16 11:24:21,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:21,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401274008] [2022-11-16 11:24:21,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:21,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:21,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:21,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:21,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:21,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:24:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:21,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:24:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:22,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:22,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:24:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:24:22,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:22,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401274008] [2022-11-16 11:24:22,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401274008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:22,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352521781] [2022-11-16 11:24:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:22,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:22,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:22,048 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:22,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:24:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:22,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 2522 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:24:22,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 11:24:22,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:22,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352521781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:22,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:24:22,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-16 11:24:22,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042304011] [2022-11-16 11:24:22,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:22,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:24:22,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:22,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:24:22,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:22,624 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 11:24:22,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:22,658 INFO L93 Difference]: Finished difference Result 180 states and 220 transitions. [2022-11-16 11:24:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:24:22,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 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 76 [2022-11-16 11:24:22,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:22,660 INFO L225 Difference]: With dead ends: 180 [2022-11-16 11:24:22,660 INFO L226 Difference]: Without dead ends: 117 [2022-11-16 11:24:22,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:24:22,661 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 [2022-11-16 11:24:22,662 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] [2022-11-16 11:24:22,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-16 11:24:22,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 95. [2022-11-16 11:24:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 70 states have internal predecessors, (82), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 11:24:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2022-11-16 11:24:22,690 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 76 [2022-11-16 11:24:22,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:22,692 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2022-11-16 11:24:22,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 11:24:22,693 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2022-11-16 11:24:22,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 11:24:22,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:22,694 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, 1, 1] [2022-11-16 11:24:22,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:22,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:22,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:22,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:22,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1011546195, now seen corresponding path program 1 times [2022-11-16 11:24:22,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:22,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882470804] [2022-11-16 11:24:22,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:22,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:24,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:24,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:24,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:24:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:24,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:24:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:24,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:25,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:24:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:24:25,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:25,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882470804] [2022-11-16 11:24:25,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882470804] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:25,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627986310] [2022-11-16 11:24:25,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:25,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:25,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:25,202 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:25,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:24:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:25,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 11:24:25,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:24:26,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:27,715 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:24:27,715 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 49 treesize of output 1 [2022-11-16 11:24:28,036 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-16 11:24:28,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 41 [2022-11-16 11:24:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:24:28,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627986310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:24:28,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:24:28,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 38 [2022-11-16 11:24:28,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006221858] [2022-11-16 11:24:28,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:28,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 11:24:28,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:28,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 11:24:28,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 11:24:28,131 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 38 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 33 states have internal predecessors, (111), 9 states have call successors, (19), 7 states have call predecessors, (19), 9 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-16 11:24:34,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:34,582 INFO L93 Difference]: Finished difference Result 217 states and 270 transitions. [2022-11-16 11:24:34,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-16 11:24:34,587 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 33 states have internal predecessors, (111), 9 states have call successors, (19), 7 states have call predecessors, (19), 9 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) Word has length 76 [2022-11-16 11:24:34,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:34,589 INFO L225 Difference]: With dead ends: 217 [2022-11-16 11:24:34,589 INFO L226 Difference]: Without dead ends: 170 [2022-11-16 11:24:34,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1039, Invalid=5916, Unknown=17, NotChecked=0, Total=6972 [2022-11-16 11:24:34,593 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 738 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:34,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 339 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2366 Invalid, 0 Unknown, 211 Unchecked, 2.4s Time] [2022-11-16 11:24:34,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-16 11:24:34,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2022-11-16 11:24:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.15) internal successors, (115), 105 states have internal predecessors, (115), 21 states have call successors, (21), 9 states have call predecessors, (21), 14 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2022-11-16 11:24:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 163 transitions. [2022-11-16 11:24:34,611 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 163 transitions. Word has length 76 [2022-11-16 11:24:34,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:34,611 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 163 transitions. [2022-11-16 11:24:34,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 33 states have internal predecessors, (111), 9 states have call successors, (19), 7 states have call predecessors, (19), 9 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-16 11:24:34,612 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 163 transitions. [2022-11-16 11:24:34,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 11:24:34,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:34,613 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:24:34,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:34,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 11:24:34,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:34,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:34,824 INFO L85 PathProgramCache]: Analyzing trace with hash 510302001, now seen corresponding path program 1 times [2022-11-16 11:24:34,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:34,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38104947] [2022-11-16 11:24:34,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:34,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:35,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:35,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:35,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:35,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:24:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:35,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:24:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:35,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:24:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 11:24:35,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:35,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38104947] [2022-11-16 11:24:35,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38104947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:35,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:35,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:24:35,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8398676] [2022-11-16 11:24:35,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:35,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:35,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:35,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:35,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:35,229 INFO L87 Difference]: Start difference. First operand 136 states and 163 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 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) [2022-11-16 11:24:35,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:35,658 INFO L93 Difference]: Finished difference Result 227 states and 274 transitions. [2022-11-16 11:24:35,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:35,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 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 80 [2022-11-16 11:24:35,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:35,660 INFO L225 Difference]: With dead ends: 227 [2022-11-16 11:24:35,660 INFO L226 Difference]: Without dead ends: 106 [2022-11-16 11:24:35,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:24:35,662 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:35,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 110 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:24:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-16 11:24:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 97. [2022-11-16 11:24:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.1176470588235294) internal successors, (76), 71 states have internal predecessors, (76), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-16 11:24:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2022-11-16 11:24:35,674 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 80 [2022-11-16 11:24:35,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:35,675 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2022-11-16 11:24:35,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 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) [2022-11-16 11:24:35,675 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2022-11-16 11:24:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-16 11:24:35,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:35,677 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] [2022-11-16 11:24:35,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:24:35,677 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:35,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:35,678 INFO L85 PathProgramCache]: Analyzing trace with hash -862998920, now seen corresponding path program 1 times [2022-11-16 11:24:35,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:35,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631402230] [2022-11-16 11:24:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:35,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:36,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:36,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:24:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:36,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:24:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:36,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:36,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:24:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 11:24:36,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:36,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631402230] [2022-11-16 11:24:36,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631402230] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:36,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534977285] [2022-11-16 11:24:36,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:36,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:36,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:36,629 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:36,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:24:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:37,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 11:24:37,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:24:37,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:37,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534977285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:37,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:24:37,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-11-16 11:24:37,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790972028] [2022-11-16 11:24:37,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:37,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:24:37,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:37,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:24:37,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:24:37,305 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 11:24:37,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:37,432 INFO L93 Difference]: Finished difference Result 167 states and 190 transitions. [2022-11-16 11:24:37,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:24:37,433 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 78 [2022-11-16 11:24:37,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:37,435 INFO L225 Difference]: With dead ends: 167 [2022-11-16 11:24:37,435 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 11:24:37,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:24:37,437 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 [2022-11-16 11:24:37,437 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] [2022-11-16 11:24:37,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 11:24:37,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-16 11:24:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 56 states have internal predecessors, (61), 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) [2022-11-16 11:24:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2022-11-16 11:24:37,462 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 78 [2022-11-16 11:24:37,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:37,463 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2022-11-16 11:24:37,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 11:24:37,463 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2022-11-16 11:24:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 11:24:37,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:37,464 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:24:37,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:37,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:24:37,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:37,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:37,674 INFO L85 PathProgramCache]: Analyzing trace with hash -649539011, now seen corresponding path program 1 times [2022-11-16 11:24:37,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:37,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126054117] [2022-11-16 11:24:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:37,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:39,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:39,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:39,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:39,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:24:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:39,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:24:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:40,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:24:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 11:24:40,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:40,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126054117] [2022-11-16 11:24:40,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126054117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:40,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:40,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:24:40,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430029751] [2022-11-16 11:24:40,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:40,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:24:40,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:40,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:24:40,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:24:40,298 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 11 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 11:24:41,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:41,051 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2022-11-16 11:24:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:24:41,053 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 80 [2022-11-16 11:24:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:41,054 INFO L225 Difference]: With dead ends: 92 [2022-11-16 11:24:41,054 INFO L226 Difference]: Without dead ends: 90 [2022-11-16 11:24:41,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:24:41,055 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 114 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:41,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 149 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:24:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-16 11:24:41,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2022-11-16 11:24:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.103448275862069) internal successors, (64), 59 states have internal predecessors, (64), 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) [2022-11-16 11:24:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2022-11-16 11:24:41,065 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 80 [2022-11-16 11:24:41,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:41,065 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2022-11-16 11:24:41,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 11:24:41,066 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2022-11-16 11:24:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 11:24:41,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:41,067 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] [2022-11-16 11:24:41,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:24:41,067 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:41,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:41,068 INFO L85 PathProgramCache]: Analyzing trace with hash -19715100, now seen corresponding path program 1 times [2022-11-16 11:24:41,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:41,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873574767] [2022-11-16 11:24:41,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:41,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:42,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:42,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:42,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:42,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:24:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:42,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:24:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:43,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:24:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:43,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:24:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 11:24:43,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:43,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873574767] [2022-11-16 11:24:43,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873574767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:43,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:43,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:24:43,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185367028] [2022-11-16 11:24:43,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:43,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:24:43,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:24:43,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:24:43,061 INFO L87 Difference]: Start difference. First operand 84 states and 95 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) [2022-11-16 11:24:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:43,761 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2022-11-16 11:24:43,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:24:43,761 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 [2022-11-16 11:24:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:43,762 INFO L225 Difference]: With dead ends: 96 [2022-11-16 11:24:43,763 INFO L226 Difference]: Without dead ends: 94 [2022-11-16 11:24:43,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:24:43,763 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 107 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:43,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 149 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:24:43,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-16 11:24:43,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2022-11-16 11:24:43,773 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) [2022-11-16 11:24:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2022-11-16 11:24:43,775 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 86 [2022-11-16 11:24:43,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:43,776 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2022-11-16 11:24:43,776 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) [2022-11-16 11:24:43,776 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2022-11-16 11:24:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 11:24:43,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:43,777 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] [2022-11-16 11:24:43,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:24:43,778 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:43,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:43,778 INFO L85 PathProgramCache]: Analyzing trace with hash -449956535, now seen corresponding path program 1 times [2022-11-16 11:24:43,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:43,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956276569] [2022-11-16 11:24:43,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:43,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:44,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:44,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:44,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:44,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:24:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:24:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:44,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:24:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:24:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:45,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:24:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 11:24:45,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:45,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956276569] [2022-11-16 11:24:45,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956276569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:45,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:45,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:24:45,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170575257] [2022-11-16 11:24:45,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:45,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:24:45,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:45,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:24:45,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:24:45,018 INFO L87 Difference]: Start difference. First operand 88 states and 98 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) [2022-11-16 11:24:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:45,675 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2022-11-16 11:24:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:24:45,675 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 [2022-11-16 11:24:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:45,676 INFO L225 Difference]: With dead ends: 100 [2022-11-16 11:24:45,676 INFO L226 Difference]: Without dead ends: 96 [2022-11-16 11:24:45,677 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 [2022-11-16 11:24:45,677 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 100 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:45,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 154 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:24:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-16 11:24:45,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2022-11-16 11:24:45,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 16 states have call successors, (16), 11 states have call predecessors, (16), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 11:24:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2022-11-16 11:24:45,686 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 92 [2022-11-16 11:24:45,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:45,687 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2022-11-16 11:24:45,687 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) [2022-11-16 11:24:45,688 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2022-11-16 11:24:45,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-16 11:24:45,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:45,689 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] [2022-11-16 11:24:45,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:24:45,690 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:45,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:45,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1438296044, now seen corresponding path program 1 times [2022-11-16 11:24:45,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:45,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585685538] [2022-11-16 11:24:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:45,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:24:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:24:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:24:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:24:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:24:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:24:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:24:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:24:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:24:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-16 11:24:47,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:47,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585685538] [2022-11-16 11:24:47,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585685538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:47,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:47,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:24:47,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933824606] [2022-11-16 11:24:47,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:47,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:24:47,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:47,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:24:47,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:24:47,680 INFO L87 Difference]: Start difference. First operand 90 states and 99 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) [2022-11-16 11:24:48,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:48,411 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2022-11-16 11:24:48,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:24:48,412 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 [2022-11-16 11:24:48,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:48,412 INFO L225 Difference]: With dead ends: 96 [2022-11-16 11:24:48,412 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 11:24:48,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:24:48,413 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 107 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:48,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 156 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:24:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 11:24:48,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 11:24:48,415 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) [2022-11-16 11:24:48,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 11:24:48,415 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 98 [2022-11-16 11:24:48,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:48,415 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:24:48,415 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) [2022-11-16 11:24:48,415 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 11:24:48,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 11:24:48,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:24:48,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:24:48,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 11:24:49,171 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|))) [2022-11-16 11:24:49,171 INFO L899 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6876 6881) no Hoare annotation was computed. [2022-11-16 11:24:49,171 INFO L899 garLoopResultBuilder]: For program point L6877-1(lines 6877 6879) no Hoare annotation was computed. [2022-11-16 11:24:49,171 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|))) [2022-11-16 11:24:49,171 INFO L899 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6876 6881) no Hoare annotation was computed. [2022-11-16 11:24:49,172 INFO L902 garLoopResultBuilder]: At program point aws_byte_buf_is_validENTRY(lines 7179 7185) the Hoare annotation is: true [2022-11-16 11:24:49,172 INFO L899 garLoopResultBuilder]: For program point L7181-3(line 7181) no Hoare annotation was computed. [2022-11-16 11:24:49,172 INFO L899 garLoopResultBuilder]: For program point L7181-1(line 7181) no Hoare annotation was computed. [2022-11-16 11:24:49,172 INFO L899 garLoopResultBuilder]: For program point L7181(lines 7181 7184) no Hoare annotation was computed. [2022-11-16 11:24:49,172 INFO L899 garLoopResultBuilder]: For program point L7181-7(lines 7181 7184) no Hoare annotation was computed. [2022-11-16 11:24:49,172 INFO L899 garLoopResultBuilder]: For program point L7181-6(lines 7181 7182) no Hoare annotation was computed. [2022-11-16 11:24:49,172 INFO L899 garLoopResultBuilder]: For program point L7181-4(lines 7181 7182) no Hoare annotation was computed. [2022-11-16 11:24:49,172 INFO L899 garLoopResultBuilder]: For program point L7181-11(lines 7181 7184) no Hoare annotation was computed. [2022-11-16 11:24:49,172 INFO L899 garLoopResultBuilder]: For program point L7181-9(lines 7181 7184) no Hoare annotation was computed. [2022-11-16 11:24:49,172 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_is_validFINAL(lines 7179 7185) no Hoare annotation was computed. [2022-11-16 11:24:49,173 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_is_validEXIT(lines 7179 7185) no Hoare annotation was computed. [2022-11-16 11:24:49,173 INFO L899 garLoopResultBuilder]: For program point L7184-2(line 7184) no Hoare annotation was computed. [2022-11-16 11:24:49,173 INFO L899 garLoopResultBuilder]: For program point L7184(line 7184) no Hoare annotation was computed. [2022-11-16 11:24:49,173 INFO L899 garLoopResultBuilder]: For program point L7184-6(line 7184) no Hoare annotation was computed. [2022-11-16 11:24:49,173 INFO L899 garLoopResultBuilder]: For program point L7184-4(line 7184) no Hoare annotation was computed. [2022-11-16 11:24:49,173 INFO L899 garLoopResultBuilder]: For program point L7184-3(line 7184) no Hoare annotation was computed. [2022-11-16 11:24:49,173 INFO L899 garLoopResultBuilder]: For program point L7184-8(line 7184) no Hoare annotation was computed. [2022-11-16 11:24:49,173 INFO L899 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2022-11-16 11:24:49,173 INFO L899 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2022-11-16 11:24:49,173 INFO L902 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2022-11-16 11:24:49,174 INFO L899 garLoopResultBuilder]: For program point L7056-1(lines 7056 7058) no Hoare annotation was computed. [2022-11-16 11:24:49,174 INFO L895 garLoopResultBuilder]: At program point L7056(lines 7056 7058) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (= |old(#valid)| |#valid|)) [2022-11-16 11:24:49,174 INFO L899 garLoopResultBuilder]: For program point aws_mem_releaseEXIT(lines 7055 7068) no Hoare annotation was computed. [2022-11-16 11:24:49,174 INFO L895 garLoopResultBuilder]: At program point aws_mem_releaseENTRY(lines 7055 7068) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (= |old(#valid)| |#valid|)) [2022-11-16 11:24:49,174 INFO L899 garLoopResultBuilder]: For program point L7063(lines 7063 7067) no Hoare annotation was computed. [2022-11-16 11:24:49,174 INFO L899 garLoopResultBuilder]: For program point L7059-1(lines 7059 7061) no Hoare annotation was computed. [2022-11-16 11:24:49,174 INFO L895 garLoopResultBuilder]: At program point L7059(lines 7059 7061) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (= |old(#valid)| |#valid|)) [2022-11-16 11:24:49,174 INFO L899 garLoopResultBuilder]: For program point L7063-2(lines 7055 7068) no Hoare annotation was computed. [2022-11-16 11:24:49,175 INFO L899 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2022-11-16 11:24:49,175 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2022-11-16 11:24:49,175 INFO L899 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2022-11-16 11:24:49,175 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2022-11-16 11:24:49,175 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6883 6885) no Hoare annotation was computed. [2022-11-16 11:24:49,175 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6883 6885) no Hoare annotation was computed. [2022-11-16 11:24:49,175 INFO L902 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6883 6885) the Hoare annotation is: true [2022-11-16 11:24:49,175 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 11:24:49,175 INFO L899 garLoopResultBuilder]: For program point L8770-1(lines 8770 8772) no Hoare annotation was computed. [2022-11-16 11:24:49,176 INFO L899 garLoopResultBuilder]: For program point L6613-1(line 6613) no Hoare annotation was computed. [2022-11-16 11:24:49,176 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|)) [2022-11-16 11:24:49,176 INFO L902 garLoopResultBuilder]: At program point L8779(line 8779) the Hoare annotation is: true [2022-11-16 11:24:49,176 INFO L899 garLoopResultBuilder]: For program point L6609(lines 6609 6614) no Hoare annotation was computed. [2022-11-16 11:24:49,176 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) (= |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|))) [2022-11-16 11:24:49,176 INFO L899 garLoopResultBuilder]: For program point L8773-1(lines 8773 8775) no Hoare annotation was computed. [2022-11-16 11:24:49,176 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) (= |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|))) [2022-11-16 11:24:49,176 INFO L899 garLoopResultBuilder]: For program point L8777-1(line 8777) no Hoare annotation was computed. [2022-11-16 11:24:49,177 INFO L899 garLoopResultBuilder]: For program point L8767-2(line 8767) no Hoare annotation was computed. [2022-11-16 11:24:49,177 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-16 11:24:49,177 INFO L899 garLoopResultBuilder]: For program point L8763(lines 8763 8778) no Hoare annotation was computed. [2022-11-16 11:24:49,177 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 11:24:49,177 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|) (= |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|)) [2022-11-16 11:24:49,177 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-16 11:24:49,177 INFO L899 garLoopResultBuilder]: For program point L8769-1(line 8769) no Hoare annotation was computed. [2022-11-16 11:24:49,177 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) (< 0 |#StackHeapBarrier|) (<= (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) 36028797018963967)) [2022-11-16 11:24:49,177 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 (< 0 |#StackHeapBarrier|))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) .cse4) (and .cse0 .cse1 (<= 0 |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~ret1140#1|) .cse2 .cse3 (<= |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~ret1140#1| 0) .cse4))) [2022-11-16 11:24:49,178 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|)) [2022-11-16 11:24:49,178 INFO L899 garLoopResultBuilder]: For program point L6612-1(line 6612) no Hoare annotation was computed. [2022-11-16 11:24:49,178 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|)) [2022-11-16 11:24:49,178 INFO L899 garLoopResultBuilder]: For program point L6610-3(lines 6610 6612) no Hoare annotation was computed. [2022-11-16 11:24:49,178 INFO L899 garLoopResultBuilder]: For program point L6610-1(lines 6610 6612) no Hoare annotation was computed. [2022-11-16 11:24:49,178 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~mem1141#1.offset| 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~mem1141#1.base| 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|))) [2022-11-16 11:24:49,178 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) (= (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_#t~mem1143#1| 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (= (select .cse2 .cse4) 0) (= (select .cse0 .cse4) 0) (< 0 |#StackHeapBarrier|))) [2022-11-16 11:24:49,178 INFO L899 garLoopResultBuilder]: For program point L8776-1(line 8776) no Hoare annotation was computed. [2022-11-16 11:24:49,179 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|))) [2022-11-16 11:24:49,179 INFO L899 garLoopResultBuilder]: For program point L7205-4(lines 7205 7207) no Hoare annotation was computed. [2022-11-16 11:24:49,179 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_clean_upFINAL(lines 7203 7216) no Hoare annotation was computed. [2022-11-16 11:24:49,179 INFO L895 garLoopResultBuilder]: At program point L7206(line 7206) the Hoare annotation is: (let ((.cse3 (<= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base)) (.cse0 (= |old(#memory_real)| |#memory_real|)) (.cse1 (= |#memory_int| |old(#memory_int)|)) (.cse2 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (.cse4 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse5 (= |old(#valid)| |#valid|))) (or (not (< 0 |#StackHeapBarrier|)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= |aws_byte_buf_clean_up_#in~buf.base| 0)) (and (= (select (select |old(#memory_$Pointer$.base)| |aws_byte_buf_clean_up_#in~buf.base|) (+ |aws_byte_buf_clean_up_#in~buf.offset| 8)) 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 (= |aws_byte_buf_clean_up_#in~buf.offset| aws_byte_buf_clean_up_~buf.offset) .cse4 .cse5 (= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base)))) [2022-11-16 11:24:49,179 INFO L899 garLoopResultBuilder]: For program point L7204-2(line 7204) no Hoare annotation was computed. [2022-11-16 11:24:49,179 INFO L895 garLoopResultBuilder]: At program point L7204-1(line 7204) the Hoare annotation is: (let ((.cse3 (<= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base)) (.cse0 (= |old(#memory_real)| |#memory_real|)) (.cse1 (= |#memory_int| |old(#memory_int)|)) (.cse2 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (.cse4 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse5 (= |old(#valid)| |#valid|))) (or (not (< 0 |#StackHeapBarrier|)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= |aws_byte_buf_clean_up_#in~buf.base| 0)) (and (= (select (select |old(#memory_$Pointer$.base)| |aws_byte_buf_clean_up_#in~buf.base|) (+ |aws_byte_buf_clean_up_#in~buf.offset| 8)) 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 (= |aws_byte_buf_clean_up_#in~buf.offset| aws_byte_buf_clean_up_~buf.offset) .cse4 .cse5 (= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base)))) [2022-11-16 11:24:49,179 INFO L899 garLoopResultBuilder]: For program point L7205-2(lines 7205 7207) no Hoare annotation was computed. [2022-11-16 11:24:49,179 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))) [2022-11-16 11:24:49,180 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_clean_upEXIT(lines 7203 7216) no Hoare annotation was computed. [2022-11-16 11:24:49,180 INFO L899 garLoopResultBuilder]: For program point L7205(line 7205) no Hoare annotation was computed. [2022-11-16 11:24:49,180 INFO L899 garLoopResultBuilder]: For program point L7206-1(line 7206) no Hoare annotation was computed. [2022-11-16 11:24:49,180 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2022-11-16 11:24:49,180 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2022-11-16 11:24:49,180 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2022-11-16 11:24:49,180 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2022-11-16 11:24:49,180 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2022-11-16 11:24:49,180 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2022-11-16 11:24:49,184 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:49,186 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:24:49,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:24:49 BoogieIcfgContainer [2022-11-16 11:24:49,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:24:49,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:24:49,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:24:49,212 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:24:49,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:24:00" (3/4) ... [2022-11-16 11:24:49,215 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:24:49,222 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2022-11-16 11:24:49,223 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_is_valid [2022-11-16 11:24:49,223 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2022-11-16 11:24:49,223 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_mem_release [2022-11-16 11:24:49,224 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-16 11:24:49,224 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_clean_up [2022-11-16 11:24:49,224 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-16 11:24:49,224 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2022-11-16 11:24:49,245 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2022-11-16 11:24:49,247 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 55 nodes and edges [2022-11-16 11:24:49,248 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-11-16 11:24:49,249 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-16 11:24:49,250 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-16 11:24:49,251 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 11:24:49,252 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:24:49,253 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:24:49,726 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:24:49,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:24:49,727 INFO L158 Benchmark]: Toolchain (without parser) took 54765.84ms. Allocated memory was 111.1MB in the beginning and 710.9MB in the end (delta: 599.8MB). Free memory was 66.3MB in the beginning and 464.1MB in the end (delta: -397.9MB). Peak memory consumption was 201.5MB. Max. memory is 16.1GB. [2022-11-16 11:24:49,729 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory was 91.6MB in the beginning and 91.4MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:24:49,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2955.66ms. Allocated memory was 111.1MB in the beginning and 144.7MB in the end (delta: 33.6MB). Free memory was 66.1MB in the beginning and 74.7MB in the end (delta: -8.6MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. [2022-11-16 11:24:49,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 233.46ms. Allocated memory is still 144.7MB. Free memory was 74.7MB in the beginning and 64.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:24:49,730 INFO L158 Benchmark]: Boogie Preprocessor took 71.22ms. Allocated memory is still 144.7MB. Free memory was 64.2MB in the beginning and 57.9MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 11:24:49,730 INFO L158 Benchmark]: RCFGBuilder took 1835.87ms. Allocated memory was 144.7MB in the beginning and 195.0MB in the end (delta: 50.3MB). Free memory was 57.3MB in the beginning and 109.0MB in the end (delta: -51.7MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2022-11-16 11:24:49,731 INFO L158 Benchmark]: TraceAbstraction took 49145.06ms. Allocated memory was 195.0MB in the beginning and 710.9MB in the end (delta: 515.9MB). Free memory was 109.0MB in the beginning and 594.1MB in the end (delta: -485.1MB). Peak memory consumption was 409.3MB. Max. memory is 16.1GB. [2022-11-16 11:24:49,733 INFO L158 Benchmark]: Witness Printer took 515.68ms. Allocated memory is still 710.9MB. Free memory was 594.1MB in the beginning and 464.1MB in the end (delta: 130.0MB). Peak memory consumption was 130.0MB. Max. memory is 16.1GB. [2022-11-16 11:24:49,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory was 91.6MB in the beginning and 91.4MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2955.66ms. Allocated memory was 111.1MB in the beginning and 144.7MB in the end (delta: 33.6MB). Free memory was 66.1MB in the beginning and 74.7MB in the end (delta: -8.6MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 233.46ms. Allocated memory is still 144.7MB. Free memory was 74.7MB in the beginning and 64.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.22ms. Allocated memory is still 144.7MB. Free memory was 64.2MB in the beginning and 57.9MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1835.87ms. Allocated memory was 144.7MB in the beginning and 195.0MB in the end (delta: 50.3MB). Free memory was 57.3MB in the beginning and 109.0MB in the end (delta: -51.7MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. * TraceAbstraction took 49145.06ms. Allocated memory was 195.0MB in the beginning and 710.9MB in the end (delta: 515.9MB). Free memory was 109.0MB in the beginning and 594.1MB in the end (delta: -485.1MB). Peak memory consumption was 409.3MB. Max. memory is 16.1GB. * Witness Printer took 515.68ms. Allocated memory is still 710.9MB. Free memory was 594.1MB in the beginning and 464.1MB in the end (delta: 130.0MB). Peak memory consumption was 130.0MB. 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: 49.0s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1979 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1932 mSDsluCounter, 4067 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 294 IncrementalHoareTripleChecker+Unchecked, 3267 mSDsCounter, 539 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6694 IncrementalHoareTripleChecker+Invalid, 7527 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 539 mSolverCounterUnsat, 800 mSDtfsCounter, 6694 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1333 GetRequests, 1016 SyntacticMatches, 13 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1861 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=9, InterpolantAutomatonStates: 187, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 98 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 25 LocationsWithAnnotation, 199 PreInvPairs, 255 NumberOfFragments, 725 HoareAnnotationTreeSize, 199 FomulaSimplifications, 599 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 25 FomulaSimplificationsInter, 750 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 5.2s SatisfiabilityAnalysisTime, 25.1s InterpolantComputationTime, 1764 NumberOfCodeBlocks, 1764 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1949 ConstructedInterpolants, 50 QuantifiedInterpolants, 7160 SizeOfPredicates, 84 NumberOfNonLiveVariables, 22596 ConjunctsInSsa, 232 ConjunctsInUnsatCore, 27 InterpolantComputations, 14 PerfectInterpolantSequences, 554/693 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! [2022-11-16 11:24:49,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29b500c-bd9a-4004-8234-4a2bf2725762/bin/uautomizer-tPACEb0tL8/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