./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc --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 82914be9df39aade96902f979c145aa97bb18d611f7f0e9a90ee0ab6b53af5a2 --- 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-5e519f3 [2022-11-02 20:43:37,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:43:37,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:43:37,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:43:37,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:43:37,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:43:37,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:43:37,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:43:37,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:43:37,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:43:37,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:43:37,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:43:37,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:43:37,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:43:37,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:43:37,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:43:37,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:43:37,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:43:37,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:43:37,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:43:37,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:43:37,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:43:37,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:43:37,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:43:37,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:43:37,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:43:37,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:43:37,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:43:37,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:43:37,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:43:37,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:43:37,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:43:37,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:43:37,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:43:37,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:43:37,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:43:37,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:43:37,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:43:37,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:43:37,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:43:37,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:43:37,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:43:37,910 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:43:37,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:43:37,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:43:37,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:43:37,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:43:37,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:43:37,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:43:37,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:43:37,917 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:43:37,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:43:37,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:43:37,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:43:37,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:43:37,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:43:37,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:43:37,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:43:37,919 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:43:37,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:43:37,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:43:37,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:43:37,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:43:37,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:43:37,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:43:37,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:43:37,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:43:37,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:43:37,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:43:37,922 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:43:37,922 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:43:37,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:43:37,924 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_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82914be9df39aade96902f979c145aa97bb18d611f7f0e9a90ee0ab6b53af5a2 [2022-11-02 20:43:38,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:43:38,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:43:38,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:43:38,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:43:38,260 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:43:38,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i [2022-11-02 20:43:38,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/data/ccf4c96a8/3d7874f96a9442308f8b2f6becc33e0c/FLAGe1b7a0b8a [2022-11-02 20:43:39,206 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:43:39,208 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i [2022-11-02 20:43:39,267 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/data/ccf4c96a8/3d7874f96a9442308f8b2f6becc33e0c/FLAGe1b7a0b8a [2022-11-02 20:43:39,706 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/data/ccf4c96a8/3d7874f96a9442308f8b2f6becc33e0c [2022-11-02 20:43:39,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:43:39,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:43:39,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:39,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:43:39,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:43:39,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:39" (1/1) ... [2022-11-02 20:43:39,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@550a8346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:39, skipping insertion in model container [2022-11-02 20:43:39,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:39" (1/1) ... [2022-11-02 20:43:39,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:43:39,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:43:40,143 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4501,4514] [2022-11-02 20:43:40,151 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4561,4574] [2022-11-02 20:43:41,143 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:41,144 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:41,145 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:41,146 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:41,147 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:41,161 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:41,162 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:41,164 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:41,165 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:41,580 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:43:41,582 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:43:41,583 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:43:41,584 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:43:41,586 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:43:41,587 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:43:41,587 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:43:41,588 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:43:41,589 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:43:41,589 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:43:41,811 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:43:41,928 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:41,929 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:42,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:42,116 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:43:42,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4501,4514] [2022-11-02 20:43:42,139 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4561,4574] [2022-11-02 20:43:42,184 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:42,184 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:42,185 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:42,187 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:42,187 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:42,199 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:42,200 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:42,201 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:42,202 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:42,260 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:43:42,261 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:43:42,262 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:43:42,263 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:43:42,263 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:43:42,264 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:43:42,265 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:43:42,265 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:43:42,266 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:43:42,269 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:43:42,296 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:43:42,365 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:42,365 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:43:42,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:42,646 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:43:42,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:42 WrapperNode [2022-11-02 20:43:42,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:42,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:42,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:43:42,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:43:42,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:42" (1/1) ... [2022-11-02 20:43:42,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:42" (1/1) ... [2022-11-02 20:43:42,868 INFO L138 Inliner]: procedures = 691, calls = 2661, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 862 [2022-11-02 20:43:42,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:42,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:43:42,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:43:42,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:43:42,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:42" (1/1) ... [2022-11-02 20:43:42,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:42" (1/1) ... [2022-11-02 20:43:42,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:42" (1/1) ... [2022-11-02 20:43:42,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:42" (1/1) ... [2022-11-02 20:43:42,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:42" (1/1) ... [2022-11-02 20:43:42,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:42" (1/1) ... [2022-11-02 20:43:42,961 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:42" (1/1) ... [2022-11-02 20:43:42,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:42" (1/1) ... [2022-11-02 20:43:42,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:43:42,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:43:42,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:43:42,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:43:42,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:42" (1/1) ... [2022-11-02 20:43:43,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:43:43,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:43,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:43:43,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:43:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-02 20:43:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-02 20:43:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2022-11-02 20:43:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2022-11-02 20:43:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:43:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-02 20:43:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-02 20:43:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:43:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:43:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:43:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:43:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:43:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-02 20:43:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-02 20:43:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:43:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-02 20:43:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-02 20:43:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:43:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:43:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-02 20:43:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-02 20:43:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-02 20:43:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-02 20:43:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:43:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:43:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:43:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:43:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:43:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-02 20:43:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-02 20:43:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-11-02 20:43:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-11-02 20:43:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:43:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2022-11-02 20:43:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2022-11-02 20:43:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:43:43,425 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:43:43,428 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:43:44,817 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:43:44,827 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:43:44,827 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:43:44,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:43:44 BoogieIcfgContainer [2022-11-02 20:43:44,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:43:44,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:43:44,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:43:44,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:43:44,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:43:39" (1/3) ... [2022-11-02 20:43:44,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b511044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:43:44, skipping insertion in model container [2022-11-02 20:43:44,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:42" (2/3) ... [2022-11-02 20:43:44,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b511044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:43:44, skipping insertion in model container [2022-11-02 20:43:44,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:43:44" (3/3) ... [2022-11-02 20:43:44,844 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_ignore_case_harness.i [2022-11-02 20:43:44,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:43:44,865 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:43:44,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:43:44,955 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;@5349c858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:43:44,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:43:44,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 88 states have internal predecessors, (108), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-02 20:43:44,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-02 20:43:44,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:44,985 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:44,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:44,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:44,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1731481966, now seen corresponding path program 1 times [2022-11-02 20:43:45,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:45,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069489223] [2022-11-02 20:43:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:45,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:45,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:43:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:45,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:45,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:43:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:45,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:45,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:43:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:45,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:45,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:43:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:45,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:43:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:45,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:43:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:45,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:43:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:46,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:43:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:46,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:43:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:46,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:43:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:46,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:43:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:46,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 20:43:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:43:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:46,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:46,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:46,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 20:43:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:46,125 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-02 20:43:46,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:46,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069489223] [2022-11-02 20:43:46,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069489223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:46,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:46,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:43:46,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150923436] [2022-11-02 20:43:46,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:46,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:43:46,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:46,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:43:46,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:46,166 INFO L87 Difference]: Start difference. First operand has 143 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 88 states have internal predecessors, (108), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-02 20:43:46,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:46,693 INFO L93 Difference]: Finished difference Result 284 states and 410 transitions. [2022-11-02 20:43:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:43:46,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 113 [2022-11-02 20:43:46,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:46,725 INFO L225 Difference]: With dead ends: 284 [2022-11-02 20:43:46,725 INFO L226 Difference]: Without dead ends: 140 [2022-11-02 20:43:46,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:46,749 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 219 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:46,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 208 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:43:46,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-02 20:43:46,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2022-11-02 20:43:46,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 83 states have (on average 1.216867469879518) internal successors, (101), 84 states have internal predecessors, (101), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-02 20:43:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 184 transitions. [2022-11-02 20:43:46,866 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 184 transitions. Word has length 113 [2022-11-02 20:43:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:46,867 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 184 transitions. [2022-11-02 20:43:46,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-02 20:43:46,868 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 184 transitions. [2022-11-02 20:43:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-02 20:43:46,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:46,874 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:46,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:43:46,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:46,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:46,876 INFO L85 PathProgramCache]: Analyzing trace with hash 57376236, now seen corresponding path program 1 times [2022-11-02 20:43:46,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:46,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189635592] [2022-11-02 20:43:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:46,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:47,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:43:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:47,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:47,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:43:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:47,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:47,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:43:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:47,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:43:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:47,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:43:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:47,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:43:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:47,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:43:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:48,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:43:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:48,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:43:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:48,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:43:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:48,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:43:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:48,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 20:43:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:48,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:43:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:48,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:48,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:48,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 20:43:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-02 20:43:48,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:48,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189635592] [2022-11-02 20:43:48,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189635592] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:48,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418280894] [2022-11-02 20:43:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:48,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:48,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:48,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:48,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:43:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:48,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:43:48,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-02 20:43:48,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:48,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418280894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:48,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:43:48,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-02 20:43:48,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127418394] [2022-11-02 20:43:48,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:48,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:43:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:48,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:43:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:43:48,963 INFO L87 Difference]: Start difference. First operand 138 states and 184 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-02 20:43:49,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:49,268 INFO L93 Difference]: Finished difference Result 272 states and 367 transitions. [2022-11-02 20:43:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:43:49,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 113 [2022-11-02 20:43:49,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:49,279 INFO L225 Difference]: With dead ends: 272 [2022-11-02 20:43:49,280 INFO L226 Difference]: Without dead ends: 141 [2022-11-02 20:43:49,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:43:49,287 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 196 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:49,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 407 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:43:49,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-02 20:43:49,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-11-02 20:43:49,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 87 states have internal predecessors, (103), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (47), 41 states have call predecessors, (47), 41 states have call successors, (47) [2022-11-02 20:43:49,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 192 transitions. [2022-11-02 20:43:49,328 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 192 transitions. Word has length 113 [2022-11-02 20:43:49,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:49,330 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 192 transitions. [2022-11-02 20:43:49,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-02 20:43:49,331 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 192 transitions. [2022-11-02 20:43:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-02 20:43:49,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:49,343 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:49,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:49,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:49,569 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:49,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:49,570 INFO L85 PathProgramCache]: Analyzing trace with hash -590863305, now seen corresponding path program 1 times [2022-11-02 20:43:49,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:49,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473079622] [2022-11-02 20:43:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:49,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:43:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:43:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:43:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:43:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:43:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:43:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:43:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:43:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:43:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:51,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:43:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:51,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 20:43:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:51,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:43:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:51,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:43:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:51,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:43:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-02 20:43:51,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:51,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473079622] [2022-11-02 20:43:51,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473079622] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:51,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626985443] [2022-11-02 20:43:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:51,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:51,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:51,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:51,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:43:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:51,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 2793 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:43:51,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:43:51,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:51,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626985443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:51,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:43:51,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-11-02 20:43:51,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991786833] [2022-11-02 20:43:51,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:51,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:43:51,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:51,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:43:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:43:51,925 INFO L87 Difference]: Start difference. First operand 141 states and 192 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-02 20:43:52,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:52,268 INFO L93 Difference]: Finished difference Result 227 states and 311 transitions. [2022-11-02 20:43:52,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:43:52,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 119 [2022-11-02 20:43:52,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:52,271 INFO L225 Difference]: With dead ends: 227 [2022-11-02 20:43:52,271 INFO L226 Difference]: Without dead ends: 141 [2022-11-02 20:43:52,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:43:52,273 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 203 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:52,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 533 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:43:52,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-02 20:43:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-11-02 20:43:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 87 states have internal predecessors, (103), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (45), 41 states have call predecessors, (45), 41 states have call successors, (45) [2022-11-02 20:43:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 190 transitions. [2022-11-02 20:43:52,291 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 190 transitions. Word has length 119 [2022-11-02 20:43:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:52,291 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 190 transitions. [2022-11-02 20:43:52,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-02 20:43:52,292 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 190 transitions. [2022-11-02 20:43:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-02 20:43:52,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:52,294 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:52,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:52,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:52,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:52,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:52,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1636756019, now seen corresponding path program 2 times [2022-11-02 20:43:52,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:52,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372936205] [2022-11-02 20:43:52,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:52,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:43:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:43:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:43:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:43:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:43:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:43:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:43:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:43:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:43:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 20:43:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:43:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:43:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:43:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:43:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-02 20:43:53,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:53,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372936205] [2022-11-02 20:43:53,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372936205] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:53,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422485140] [2022-11-02 20:43:53,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:43:53,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:53,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:53,442 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:53,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:43:53,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:43:53,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:43:53,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:43:53,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-11-02 20:43:54,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:54,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422485140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:54,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:43:54,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-11-02 20:43:54,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852529282] [2022-11-02 20:43:54,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:54,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:43:54,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:54,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:43:54,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:43:54,099 INFO L87 Difference]: Start difference. First operand 141 states and 190 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-02 20:43:54,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:54,217 INFO L93 Difference]: Finished difference Result 153 states and 209 transitions. [2022-11-02 20:43:54,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:43:54,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 131 [2022-11-02 20:43:54,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:54,222 INFO L225 Difference]: With dead ends: 153 [2022-11-02 20:43:54,223 INFO L226 Difference]: Without dead ends: 151 [2022-11-02 20:43:54,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:43:54,225 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 22 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:54,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1249 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:43:54,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-02 20:43:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2022-11-02 20:43:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 94 states have internal predecessors, (109), 43 states have call successors, (43), 13 states have call predecessors, (43), 15 states have return successors, (54), 42 states have call predecessors, (54), 42 states have call successors, (54) [2022-11-02 20:43:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 206 transitions. [2022-11-02 20:43:54,263 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 206 transitions. Word has length 131 [2022-11-02 20:43:54,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:54,266 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 206 transitions. [2022-11-02 20:43:54,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-02 20:43:54,266 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 206 transitions. [2022-11-02 20:43:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-02 20:43:54,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:54,270 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:54,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:54,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:54,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:54,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:54,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1157375339, now seen corresponding path program 1 times [2022-11-02 20:43:54,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:54,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102782589] [2022-11-02 20:43:54,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:54,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:43:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:43:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:43:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:43:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:43:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:43:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:43:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:43:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:43:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 20:43:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:43:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:43:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:43:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:43:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-02 20:43:55,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:55,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102782589] [2022-11-02 20:43:55,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102782589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:55,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370339284] [2022-11-02 20:43:55,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:55,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:55,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:55,413 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:55,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:43:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:56,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2839 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:43:56,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-02 20:43:56,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:56,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370339284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:56,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:43:56,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-02 20:43:56,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765700740] [2022-11-02 20:43:56,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:56,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:43:56,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:56,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:43:56,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:43:56,148 INFO L87 Difference]: Start difference. First operand 150 states and 206 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-02 20:43:56,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:56,458 INFO L93 Difference]: Finished difference Result 260 states and 358 transitions. [2022-11-02 20:43:56,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:43:56,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 135 [2022-11-02 20:43:56,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:56,461 INFO L225 Difference]: With dead ends: 260 [2022-11-02 20:43:56,461 INFO L226 Difference]: Without dead ends: 147 [2022-11-02 20:43:56,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:43:56,462 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 202 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:56,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 533 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:43:56,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-02 20:43:56,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-11-02 20:43:56,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 89 states have (on average 1.1910112359550562) internal successors, (106), 91 states have internal predecessors, (106), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (50), 42 states have call predecessors, (50), 42 states have call successors, (50) [2022-11-02 20:43:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 199 transitions. [2022-11-02 20:43:56,499 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 199 transitions. Word has length 135 [2022-11-02 20:43:56,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:56,499 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 199 transitions. [2022-11-02 20:43:56,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-02 20:43:56,500 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 199 transitions. [2022-11-02 20:43:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-02 20:43:56,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:56,502 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:56,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:56,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:56,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:56,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:56,725 INFO L85 PathProgramCache]: Analyzing trace with hash 707842976, now seen corresponding path program 1 times [2022-11-02 20:43:56,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:56,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760093869] [2022-11-02 20:43:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:56,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:43:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:43:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:43:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:43:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:43:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:43:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:43:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:43:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:43:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 20:43:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:43:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:43:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:43:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 20:43:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:43:58,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:58,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760093869] [2022-11-02 20:43:58,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760093869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:58,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:58,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:43:58,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477068734] [2022-11-02 20:43:58,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:58,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:43:58,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:58,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:43:58,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:43:58,346 INFO L87 Difference]: Start difference. First operand 147 states and 199 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-02 20:43:59,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:59,148 INFO L93 Difference]: Finished difference Result 314 states and 443 transitions. [2022-11-02 20:43:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:43:59,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 141 [2022-11-02 20:43:59,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:59,151 INFO L225 Difference]: With dead ends: 314 [2022-11-02 20:43:59,151 INFO L226 Difference]: Without dead ends: 174 [2022-11-02 20:43:59,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:43:59,153 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 242 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:59,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 309 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:43:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-02 20:43:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 152. [2022-11-02 20:43:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 94 states have (on average 1.202127659574468) internal successors, (113), 96 states have internal predecessors, (113), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (50), 42 states have call predecessors, (50), 42 states have call successors, (50) [2022-11-02 20:43:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-11-02 20:43:59,209 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 206 transitions. Word has length 141 [2022-11-02 20:43:59,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:59,209 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-11-02 20:43:59,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-02 20:43:59,210 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 206 transitions. [2022-11-02 20:43:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-02 20:43:59,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:59,216 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:59,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:43:59,216 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:59,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:59,217 INFO L85 PathProgramCache]: Analyzing trace with hash 966008414, now seen corresponding path program 1 times [2022-11-02 20:43:59,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:59,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343873367] [2022-11-02 20:43:59,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:59,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:44:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:44:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:44:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:44:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:44:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:44:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:44:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:44:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 20:44:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:44:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:04,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:44:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:04,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:44:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:04,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:04,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 20:44:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:04,464 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-02 20:44:04,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:04,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343873367] [2022-11-02 20:44:04,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343873367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:04,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245054315] [2022-11-02 20:44:04,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:04,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:04,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:04,466 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:04,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:44:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:05,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 2851 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 20:44:05,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:05,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:44:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-02 20:44:05,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:05,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245054315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:05,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:44:05,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [16] total 27 [2022-11-02 20:44:05,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142357165] [2022-11-02 20:44:05,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:05,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:44:05,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:05,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:44:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:44:05,930 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-02 20:44:06,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:06,149 INFO L93 Difference]: Finished difference Result 320 states and 429 transitions. [2022-11-02 20:44:06,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:44:06,149 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 141 [2022-11-02 20:44:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:06,151 INFO L225 Difference]: With dead ends: 320 [2022-11-02 20:44:06,151 INFO L226 Difference]: Without dead ends: 171 [2022-11-02 20:44:06,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:44:06,154 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 25 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:06,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1156 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 65 Unchecked, 0.2s Time] [2022-11-02 20:44:06,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-02 20:44:06,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-02 20:44:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 114 states have internal predecessors, (136), 43 states have call successors, (43), 14 states have call predecessors, (43), 15 states have return successors, (50), 42 states have call predecessors, (50), 42 states have call successors, (50) [2022-11-02 20:44:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 229 transitions. [2022-11-02 20:44:06,172 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 229 transitions. Word has length 141 [2022-11-02 20:44:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:06,173 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 229 transitions. [2022-11-02 20:44:06,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-02 20:44:06,173 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 229 transitions. [2022-11-02 20:44:06,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-02 20:44:06,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:06,176 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:06,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:06,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:06,401 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:06,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:06,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1067385632, now seen corresponding path program 1 times [2022-11-02 20:44:06,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:06,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007739232] [2022-11-02 20:44:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:06,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:44:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:44:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:44:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:44:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:44:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:44:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:44:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:44:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 20:44:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:44:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:44:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:44:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 20:44:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-02 20:44:06,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:06,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007739232] [2022-11-02 20:44:06,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007739232] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:06,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857977701] [2022-11-02 20:44:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:06,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:06,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:06,948 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:06,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:44:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:07,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 2846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:44:07,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-02 20:44:07,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:07,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857977701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:07,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:44:07,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-11-02 20:44:07,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188945890] [2022-11-02 20:44:07,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:07,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:07,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:07,571 INFO L87 Difference]: Start difference. First operand 171 states and 229 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-02 20:44:07,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:07,607 INFO L93 Difference]: Finished difference Result 329 states and 448 transitions. [2022-11-02 20:44:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:44:07,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2022-11-02 20:44:07,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:07,611 INFO L225 Difference]: With dead ends: 329 [2022-11-02 20:44:07,611 INFO L226 Difference]: Without dead ends: 180 [2022-11-02 20:44:07,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:44:07,613 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 20 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:07,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 541 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-02 20:44:07,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2022-11-02 20:44:07,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 106 states have internal predecessors, (127), 43 states have call successors, (43), 14 states have call predecessors, (43), 14 states have return successors, (49), 42 states have call predecessors, (49), 42 states have call successors, (49) [2022-11-02 20:44:07,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 219 transitions. [2022-11-02 20:44:07,633 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 219 transitions. Word has length 141 [2022-11-02 20:44:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:07,634 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 219 transitions. [2022-11-02 20:44:07,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-02 20:44:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 219 transitions. [2022-11-02 20:44:07,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:44:07,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:07,637 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:07,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:07,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:07,865 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:07,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:07,865 INFO L85 PathProgramCache]: Analyzing trace with hash -707487644, now seen corresponding path program 2 times [2022-11-02 20:44:07,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:07,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298847802] [2022-11-02 20:44:07,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:07,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:08,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:08,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:08,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:44:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:08,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:08,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:44:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:08,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:44:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:44:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:44:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:44:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:44:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 20:44:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 20:44:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-02 20:44:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 20:44:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:44:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 20:44:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:44:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:09,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298847802] [2022-11-02 20:44:09,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298847802] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:09,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317283104] [2022-11-02 20:44:09,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:44:09,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:09,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:09,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:09,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:44:10,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:44:10,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:44:10,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:44:10,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-02 20:44:10,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:10,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317283104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:10,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:44:10,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2022-11-02 20:44:10,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809430343] [2022-11-02 20:44:10,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:10,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:10,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:10,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:10,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:44:10,934 INFO L87 Difference]: Start difference. First operand 163 states and 219 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-02 20:44:11,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:11,121 INFO L93 Difference]: Finished difference Result 317 states and 429 transitions. [2022-11-02 20:44:11,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:44:11,122 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2022-11-02 20:44:11,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:11,124 INFO L225 Difference]: With dead ends: 317 [2022-11-02 20:44:11,124 INFO L226 Difference]: Without dead ends: 168 [2022-11-02 20:44:11,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:44:11,125 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 12 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:11,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1353 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:11,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-02 20:44:11,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-11-02 20:44:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 109 states have (on average 1.201834862385321) internal successors, (131), 111 states have internal predecessors, (131), 43 states have call successors, (43), 14 states have call predecessors, (43), 15 states have return successors, (56), 42 states have call predecessors, (56), 42 states have call successors, (56) [2022-11-02 20:44:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 230 transitions. [2022-11-02 20:44:11,139 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 230 transitions. Word has length 145 [2022-11-02 20:44:11,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:11,140 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 230 transitions. [2022-11-02 20:44:11,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-02 20:44:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 230 transitions. [2022-11-02 20:44:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:44:11,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:11,142 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:11,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:11,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 20:44:11,369 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:11,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:11,370 INFO L85 PathProgramCache]: Analyzing trace with hash 434192105, now seen corresponding path program 1 times [2022-11-02 20:44:11,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:11,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191366331] [2022-11-02 20:44:11,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:11,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:44:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:44:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:44:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:44:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:44:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:44:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:44:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:44:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:44:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:44:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:44:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:44:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-02 20:44:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,910 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-02 20:44:11,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:11,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191366331] [2022-11-02 20:44:11,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191366331] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:11,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851734536] [2022-11-02 20:44:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:11,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:11,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:11,913 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:11,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:44:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:12,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 2863 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:44:12,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-02 20:44:12,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:12,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851734536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:12,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:44:12,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-11-02 20:44:12,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058507038] [2022-11-02 20:44:12,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:12,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:12,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:12,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:12,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:12,547 INFO L87 Difference]: Start difference. First operand 168 states and 230 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-02 20:44:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:12,583 INFO L93 Difference]: Finished difference Result 327 states and 453 transitions. [2022-11-02 20:44:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:44:12,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2022-11-02 20:44:12,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:12,586 INFO L225 Difference]: With dead ends: 327 [2022-11-02 20:44:12,586 INFO L226 Difference]: Without dead ends: 171 [2022-11-02 20:44:12,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:44:12,587 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 9 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 534 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 [2022-11-02 20:44:12,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 534 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-02 20:44:12,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2022-11-02 20:44:12,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 109 states have (on average 1.18348623853211) internal successors, (129), 111 states have internal predecessors, (129), 43 states have call successors, (43), 14 states have call predecessors, (43), 15 states have return successors, (56), 42 states have call predecessors, (56), 42 states have call successors, (56) [2022-11-02 20:44:12,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 228 transitions. [2022-11-02 20:44:12,607 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 228 transitions. Word has length 147 [2022-11-02 20:44:12,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:12,608 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 228 transitions. [2022-11-02 20:44:12,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-02 20:44:12,608 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 228 transitions. [2022-11-02 20:44:12,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:44:12,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:12,612 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:12,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:12,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:44:12,841 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:12,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:12,841 INFO L85 PathProgramCache]: Analyzing trace with hash -589889235, now seen corresponding path program 1 times [2022-11-02 20:44:12,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:12,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767542458] [2022-11-02 20:44:12,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:12,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:44:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:44:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:44:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:44:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:44:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:44:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:44:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:44:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:44:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:44:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:44:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:44:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-02 20:44:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-02 20:44:13,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:13,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767542458] [2022-11-02 20:44:13,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767542458] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:13,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959541363] [2022-11-02 20:44:13,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:13,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:13,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:13,412 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:13,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:44:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:14,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 2865 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:44:14,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-02 20:44:14,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:14,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959541363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:14,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:44:14,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-11-02 20:44:14,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390529271] [2022-11-02 20:44:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:14,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:14,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:14,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:14,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:14,066 INFO L87 Difference]: Start difference. First operand 168 states and 228 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-02 20:44:14,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:14,098 INFO L93 Difference]: Finished difference Result 333 states and 469 transitions. [2022-11-02 20:44:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:44:14,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2022-11-02 20:44:14,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:14,100 INFO L225 Difference]: With dead ends: 333 [2022-11-02 20:44:14,100 INFO L226 Difference]: Without dead ends: 177 [2022-11-02 20:44:14,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:44:14,102 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 34 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:14,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 532 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:14,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-02 20:44:14,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 164. [2022-11-02 20:44:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 105 states have (on average 1.161904761904762) internal successors, (122), 107 states have internal predecessors, (122), 43 states have call successors, (43), 14 states have call predecessors, (43), 15 states have return successors, (56), 42 states have call predecessors, (56), 42 states have call successors, (56) [2022-11-02 20:44:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 221 transitions. [2022-11-02 20:44:14,116 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 221 transitions. Word has length 147 [2022-11-02 20:44:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:14,116 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 221 transitions. [2022-11-02 20:44:14,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-02 20:44:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 221 transitions. [2022-11-02 20:44:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:44:14,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:14,119 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:14,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:14,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:44:14,342 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:14,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:14,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1628473809, now seen corresponding path program 1 times [2022-11-02 20:44:14,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:14,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96633219] [2022-11-02 20:44:14,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:14,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:44:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:44:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:44:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:44:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:44:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:44:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:44:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:44:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:44:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:44:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:44:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:44:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-02 20:44:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-02 20:44:19,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:19,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96633219] [2022-11-02 20:44:19,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96633219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:19,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:19,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-02 20:44:19,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053123351] [2022-11-02 20:44:19,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:19,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:44:19,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:19,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:44:19,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:44:19,355 INFO L87 Difference]: Start difference. First operand 164 states and 221 transitions. Second operand has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 8 states have call successors, (19) [2022-11-02 20:44:21,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:21,826 INFO L93 Difference]: Finished difference Result 286 states and 406 transitions. [2022-11-02 20:44:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:44:21,827 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 8 states have call successors, (19) Word has length 147 [2022-11-02 20:44:21,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:21,829 INFO L225 Difference]: With dead ends: 286 [2022-11-02 20:44:21,829 INFO L226 Difference]: Without dead ends: 200 [2022-11-02 20:44:21,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:44:21,831 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 201 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:21,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 655 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:44:21,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-02 20:44:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 180. [2022-11-02 20:44:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 117 states have internal predecessors, (129), 50 states have call successors, (50), 14 states have call predecessors, (50), 17 states have return successors, (72), 48 states have call predecessors, (72), 49 states have call successors, (72) [2022-11-02 20:44:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 251 transitions. [2022-11-02 20:44:21,866 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 251 transitions. Word has length 147 [2022-11-02 20:44:21,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:21,867 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 251 transitions. [2022-11-02 20:44:21,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 8 states have call successors, (19) [2022-11-02 20:44:21,868 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 251 transitions. [2022-11-02 20:44:21,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-02 20:44:21,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:21,870 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:21,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:44:21,871 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:21,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:21,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1208327961, now seen corresponding path program 1 times [2022-11-02 20:44:21,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:21,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047003464] [2022-11-02 20:44:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:21,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:44:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:44:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:44:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:44:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:44:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:44:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:44:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:44:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:44:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:44:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 20:44:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-02 20:44:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-02 20:44:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-02 20:44:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,974 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-02 20:44:24,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:24,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047003464] [2022-11-02 20:44:24,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047003464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:24,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753086791] [2022-11-02 20:44:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:24,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:24,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:24,976 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:25,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:44:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:25,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 20:44:25,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:26,178 INFO L356 Elim1Store]: treesize reduction 132, result has 21.0 percent of original size [2022-11-02 20:44:26,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 80 [2022-11-02 20:44:26,366 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-02 20:44:26,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 33 [2022-11-02 20:44:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 112 proven. 8 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-02 20:44:26,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:44:27,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 17 [2022-11-02 20:44:27,234 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-02 20:44:27,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 24 [2022-11-02 20:44:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-02 20:44:27,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753086791] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:44:27,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:44:27,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 29 [2022-11-02 20:44:27,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129923451] [2022-11-02 20:44:27,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:27,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:44:27,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:27,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:44:27,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:44:27,307 INFO L87 Difference]: Start difference. First operand 180 states and 251 transitions. Second operand has 29 states, 27 states have (on average 5.222222222222222) internal successors, (141), 25 states have internal predecessors, (141), 13 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (48), 11 states have call predecessors, (48), 13 states have call successors, (48) [2022-11-02 20:44:32,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:32,287 INFO L93 Difference]: Finished difference Result 455 states and 718 transitions. [2022-11-02 20:44:32,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 20:44:32,288 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 5.222222222222222) internal successors, (141), 25 states have internal predecessors, (141), 13 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (48), 11 states have call predecessors, (48), 13 states have call successors, (48) Word has length 154 [2022-11-02 20:44:32,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:32,291 INFO L225 Difference]: With dead ends: 455 [2022-11-02 20:44:32,291 INFO L226 Difference]: Without dead ends: 345 [2022-11-02 20:44:32,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 332 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=245, Invalid=2407, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 20:44:32,293 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 248 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 3370 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 4232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 3370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 637 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:32,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 983 Invalid, 4232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 3370 Invalid, 0 Unknown, 637 Unchecked, 3.8s Time] [2022-11-02 20:44:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-02 20:44:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 257. [2022-11-02 20:44:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 162 states have (on average 1.1419753086419753) internal successors, (185), 169 states have internal predecessors, (185), 72 states have call successors, (72), 17 states have call predecessors, (72), 22 states have return successors, (134), 70 states have call predecessors, (134), 71 states have call successors, (134) [2022-11-02 20:44:32,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 391 transitions. [2022-11-02 20:44:32,353 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 391 transitions. Word has length 154 [2022-11-02 20:44:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:32,355 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 391 transitions. [2022-11-02 20:44:32,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 5.222222222222222) internal successors, (141), 25 states have internal predecessors, (141), 13 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (48), 11 states have call predecessors, (48), 13 states have call successors, (48) [2022-11-02 20:44:32,356 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 391 transitions. [2022-11-02 20:44:32,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-02 20:44:32,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:32,360 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:32,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:32,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:44:32,577 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:32,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:32,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1776386733, now seen corresponding path program 1 times [2022-11-02 20:44:32,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:32,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860658189] [2022-11-02 20:44:32,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:32,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:44:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:44:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:44:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:44:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:44:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:44:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:44:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:44:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:44:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:44:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 20:44:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-02 20:44:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 20:44:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:34,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-02 20:44:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-02 20:44:34,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:34,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860658189] [2022-11-02 20:44:34,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860658189] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:34,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237297415] [2022-11-02 20:44:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:34,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:34,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:34,027 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:34,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:44:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:34,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:44:34,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-02 20:44:34,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:34,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237297415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:34,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:44:34,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2022-11-02 20:44:34,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715576574] [2022-11-02 20:44:34,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:34,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:34,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:34,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:34,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:44:34,781 INFO L87 Difference]: Start difference. First operand 257 states and 391 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-02 20:44:35,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:35,012 INFO L93 Difference]: Finished difference Result 415 states and 616 transitions. [2022-11-02 20:44:35,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:44:35,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 158 [2022-11-02 20:44:35,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:35,015 INFO L225 Difference]: With dead ends: 415 [2022-11-02 20:44:35,016 INFO L226 Difference]: Without dead ends: 257 [2022-11-02 20:44:35,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:44:35,018 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 12 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:35,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1350 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:35,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-02 20:44:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2022-11-02 20:44:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 162 states have (on average 1.1419753086419753) internal successors, (185), 169 states have internal predecessors, (185), 72 states have call successors, (72), 17 states have call predecessors, (72), 22 states have return successors, (126), 70 states have call predecessors, (126), 71 states have call successors, (126) [2022-11-02 20:44:35,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 383 transitions. [2022-11-02 20:44:35,062 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 383 transitions. Word has length 158 [2022-11-02 20:44:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:35,062 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 383 transitions. [2022-11-02 20:44:35,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-02 20:44:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 383 transitions. [2022-11-02 20:44:35,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-02 20:44:35,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:35,066 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:35,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:35,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:44:35,281 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:35,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:35,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1902028973, now seen corresponding path program 2 times [2022-11-02 20:44:35,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:35,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632657247] [2022-11-02 20:44:35,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:35,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:44:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:44:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:44:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:44:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:44:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:44:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:44:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:44:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:44:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 20:44:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 20:44:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-02 20:44:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 20:44:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-02 20:44:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-02 20:44:36,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:36,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632657247] [2022-11-02 20:44:36,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632657247] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:36,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651849359] [2022-11-02 20:44:36,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:44:36,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:36,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:36,600 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:36,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:44:37,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:44:37,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:44:37,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 20:44:37,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 120 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-02 20:44:38,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:44:39,544 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-02 20:44:39,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 19 [2022-11-02 20:44:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 38 proven. 24 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-02 20:44:39,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651849359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:44:39,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:44:39,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 11] total 32 [2022-11-02 20:44:39,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001388412] [2022-11-02 20:44:39,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:39,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:44:39,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:39,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:44:39,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:44:39,621 INFO L87 Difference]: Start difference. First operand 257 states and 383 transitions. Second operand has 32 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 28 states have internal predecessors, (144), 9 states have call successors, (46), 6 states have call predecessors, (46), 7 states have return successors, (42), 7 states have call predecessors, (42), 9 states have call successors, (42) [2022-11-02 20:44:44,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:44,042 INFO L93 Difference]: Finished difference Result 475 states and 726 transitions. [2022-11-02 20:44:44,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-02 20:44:44,043 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 28 states have internal predecessors, (144), 9 states have call successors, (46), 6 states have call predecessors, (46), 7 states have return successors, (42), 7 states have call predecessors, (42), 9 states have call successors, (42) Word has length 158 [2022-11-02 20:44:44,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:44,046 INFO L225 Difference]: With dead ends: 475 [2022-11-02 20:44:44,046 INFO L226 Difference]: Without dead ends: 299 [2022-11-02 20:44:44,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 329 SyntacticMatches, 8 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=450, Invalid=3452, Unknown=4, NotChecked=0, Total=3906 [2022-11-02 20:44:44,049 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 301 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 2958 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 3449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:44,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1120 Invalid, 3449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2958 Invalid, 0 Unknown, 222 Unchecked, 2.7s Time] [2022-11-02 20:44:44,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-02 20:44:44,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 265. [2022-11-02 20:44:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 169 states have (on average 1.136094674556213) internal successors, (192), 177 states have internal predecessors, (192), 72 states have call successors, (72), 17 states have call predecessors, (72), 23 states have return successors, (125), 70 states have call predecessors, (125), 71 states have call successors, (125) [2022-11-02 20:44:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 389 transitions. [2022-11-02 20:44:44,093 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 389 transitions. Word has length 158 [2022-11-02 20:44:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:44,094 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 389 transitions. [2022-11-02 20:44:44,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 28 states have internal predecessors, (144), 9 states have call successors, (46), 6 states have call predecessors, (46), 7 states have return successors, (42), 7 states have call predecessors, (42), 9 states have call successors, (42) [2022-11-02 20:44:44,094 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 389 transitions. [2022-11-02 20:44:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-02 20:44:44,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:44,097 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:44,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:44,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:44:44,325 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:44,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1318685694, now seen corresponding path program 1 times [2022-11-02 20:44:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:44,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506536749] [2022-11-02 20:44:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:44,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:47,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:47,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:47,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:44:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:44:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:47,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:44:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:47,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:44:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:47,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:44:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:47,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:44:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:47,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:44:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:47,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:44:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:44:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:48,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:44:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:44:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:44:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:48,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:48,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:48,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-02 20:44:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-02 20:44:48,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:48,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506536749] [2022-11-02 20:44:48,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506536749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:48,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522800040] [2022-11-02 20:44:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:48,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:48,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:48,067 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:48,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:44:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:48,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 2872 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-02 20:44:48,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:48,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:44:49,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2022-11-02 20:44:49,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 14 [2022-11-02 20:44:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 20:44:49,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:49,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522800040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:49,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:44:49,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [19] total 28 [2022-11-02 20:44:49,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616893490] [2022-11-02 20:44:49,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:49,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:44:49,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:49,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:44:49,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:44:49,764 INFO L87 Difference]: Start difference. First operand 265 states and 389 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 15 states have internal predecessors, (88), 7 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-02 20:44:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:51,090 INFO L93 Difference]: Finished difference Result 538 states and 797 transitions. [2022-11-02 20:44:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:44:51,091 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 15 states have internal predecessors, (88), 7 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) Word has length 149 [2022-11-02 20:44:51,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:51,094 INFO L225 Difference]: With dead ends: 538 [2022-11-02 20:44:51,094 INFO L226 Difference]: Without dead ends: 374 [2022-11-02 20:44:51,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 167 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 20:44:51,096 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 112 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 993 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:51,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1019 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1068 Invalid, 0 Unknown, 993 Unchecked, 1.1s Time] [2022-11-02 20:44:51,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-02 20:44:51,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 327. [2022-11-02 20:44:51,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 211 states have (on average 1.1184834123222749) internal successors, (236), 222 states have internal predecessors, (236), 88 states have call successors, (88), 19 states have call predecessors, (88), 27 states have return successors, (154), 85 states have call predecessors, (154), 87 states have call successors, (154) [2022-11-02 20:44:51,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 478 transitions. [2022-11-02 20:44:51,147 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 478 transitions. Word has length 149 [2022-11-02 20:44:51,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:51,148 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 478 transitions. [2022-11-02 20:44:51,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 15 states have internal predecessors, (88), 7 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-02 20:44:51,149 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 478 transitions. [2022-11-02 20:44:51,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-02 20:44:51,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:51,152 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:51,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:51,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:51,377 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:51,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:51,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1200244220, now seen corresponding path program 1 times [2022-11-02 20:44:51,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:51,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005522891] [2022-11-02 20:44:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:51,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:54,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:54,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:54,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:44:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:54,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:44:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:44:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:44:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:44:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:44:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:44:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:44:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:44:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:44:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:44:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:44:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-02 20:44:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-02 20:44:55,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:55,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005522891] [2022-11-02 20:44:55,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005522891] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:55,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975835727] [2022-11-02 20:44:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:55,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:55,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:55,713 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:55,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:44:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:56,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-02 20:44:56,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:57,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:44:57,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:44:57,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:44:57,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:44:57,113 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 20:44:57,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 48 [2022-11-02 20:44:58,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 10 [2022-11-02 20:44:58,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:44:58,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:44:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 90 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:44:59,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:21,978 WARN L234 SmtUtils]: Spent 21.42s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:45:46,632 WARN L234 SmtUtils]: Spent 24.19s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:45:47,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 52 [2022-11-02 20:45:47,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 17 [2022-11-02 20:45:48,009 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-02 20:45:48,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2022-11-02 20:45:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-02 20:45:48,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975835727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:48,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:48,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23, 24] total 60 [2022-11-02 20:45:48,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583643062] [2022-11-02 20:45:48,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:48,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-02 20:45:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:48,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-02 20:45:48,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=3322, Unknown=0, NotChecked=0, Total=3540 [2022-11-02 20:45:48,169 INFO L87 Difference]: Start difference. First operand 327 states and 478 transitions. Second operand has 60 states, 51 states have (on average 3.980392156862745) internal successors, (203), 50 states have internal predecessors, (203), 22 states have call successors, (55), 13 states have call predecessors, (55), 17 states have return successors, (53), 21 states have call predecessors, (53), 21 states have call successors, (53) [2022-11-02 20:46:03,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:03,392 INFO L93 Difference]: Finished difference Result 750 states and 1072 transitions. [2022-11-02 20:46:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-11-02 20:46:03,401 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 51 states have (on average 3.980392156862745) internal successors, (203), 50 states have internal predecessors, (203), 22 states have call successors, (55), 13 states have call predecessors, (55), 17 states have return successors, (53), 21 states have call predecessors, (53), 21 states have call successors, (53) Word has length 149 [2022-11-02 20:46:03,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:03,406 INFO L225 Difference]: With dead ends: 750 [2022-11-02 20:46:03,407 INFO L226 Difference]: Without dead ends: 403 [2022-11-02 20:46:03,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 305 SyntacticMatches, 14 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4428 ImplicationChecksByTransitivity, 56.0s TimeCoverageRelationStatistics Valid=1540, Invalid=14972, Unknown=0, NotChecked=0, Total=16512 [2022-11-02 20:46:03,418 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 871 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 7813 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 10854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 7813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2283 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:03,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 2149 Invalid, 10854 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [758 Valid, 7813 Invalid, 0 Unknown, 2283 Unchecked, 8.3s Time] [2022-11-02 20:46:03,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-02 20:46:03,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 331. [2022-11-02 20:46:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 215 states have (on average 1.1162790697674418) internal successors, (240), 225 states have internal predecessors, (240), 86 states have call successors, (86), 21 states have call predecessors, (86), 29 states have return successors, (144), 84 states have call predecessors, (144), 85 states have call successors, (144) [2022-11-02 20:46:03,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 470 transitions. [2022-11-02 20:46:03,474 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 470 transitions. Word has length 149 [2022-11-02 20:46:03,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:03,474 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 470 transitions. [2022-11-02 20:46:03,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 51 states have (on average 3.980392156862745) internal successors, (203), 50 states have internal predecessors, (203), 22 states have call successors, (55), 13 states have call predecessors, (55), 17 states have return successors, (53), 21 states have call predecessors, (53), 21 states have call successors, (53) [2022-11-02 20:46:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 470 transitions. [2022-11-02 20:46:03,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 20:46:03,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:03,479 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:03,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:03,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:46:03,705 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:03,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:03,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1388835896, now seen corresponding path program 3 times [2022-11-02 20:46:03,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:03,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024553120] [2022-11-02 20:46:03,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:03,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:46:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:46:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:46:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:46:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:46:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:46:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:46:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:46:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:08,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:46:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:08,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:46:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:08,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:46:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:08,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:46:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:08,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 20:46:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:08,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-02 20:46:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-02 20:46:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:08,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:46:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-02 20:46:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-02 20:46:08,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:08,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024553120] [2022-11-02 20:46:08,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024553120] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:08,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571012695] [2022-11-02 20:46:08,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:46:08,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:08,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:08,494 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:08,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 20:46:09,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:46:09,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:46:09,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 2832 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-02 20:46:09,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:09,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 20:46:10,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 30 [2022-11-02 20:46:10,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-02 20:46:10,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 30 [2022-11-02 20:46:10,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-02 20:46:10,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:46:10,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:46:10,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:46:10,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 42 [2022-11-02 20:46:11,019 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:46:11,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 150 treesize of output 216 [2022-11-02 20:46:11,064 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:46:11,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 100 treesize of output 112 [2022-11-02 20:46:11,107 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:46:11,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 80 treesize of output 86 [2022-11-02 20:46:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-02 20:46:13,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:15,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 146 treesize of output 128 [2022-11-02 20:46:15,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 143 treesize of output 125 [2022-11-02 20:46:15,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 640 treesize of output 624 [2022-11-02 20:46:15,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1643 treesize of output 1611 [2022-11-02 20:46:15,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3329 treesize of output 3289 [2022-11-02 20:46:17,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 20:46:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-02 20:46:17,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571012695] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:17,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:46:17,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 31 [2022-11-02 20:46:17,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945928705] [2022-11-02 20:46:17,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:17,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-02 20:46:17,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:17,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-02 20:46:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:46:17,698 INFO L87 Difference]: Start difference. First operand 331 states and 470 transitions. Second operand has 31 states, 27 states have (on average 5.37037037037037) internal successors, (145), 24 states have internal predecessors, (145), 12 states have call successors, (49), 8 states have call predecessors, (49), 7 states have return successors, (46), 9 states have call predecessors, (46), 12 states have call successors, (46) [2022-11-02 20:46:20,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:20,125 INFO L93 Difference]: Finished difference Result 581 states and 794 transitions. [2022-11-02 20:46:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:46:20,126 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.37037037037037) internal successors, (145), 24 states have internal predecessors, (145), 12 states have call successors, (49), 8 states have call predecessors, (49), 7 states have return successors, (46), 9 states have call predecessors, (46), 12 states have call successors, (46) Word has length 160 [2022-11-02 20:46:20,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:20,130 INFO L225 Difference]: With dead ends: 581 [2022-11-02 20:46:20,130 INFO L226 Difference]: Without dead ends: 410 [2022-11-02 20:46:20,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 339 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=221, Invalid=1339, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 20:46:20,133 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 165 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 522 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:20,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 665 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1689 Invalid, 0 Unknown, 522 Unchecked, 1.9s Time] [2022-11-02 20:46:20,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-02 20:46:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 399. [2022-11-02 20:46:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 276 states have (on average 1.1159420289855073) internal successors, (308), 290 states have internal predecessors, (308), 87 states have call successors, (87), 24 states have call predecessors, (87), 35 states have return successors, (141), 84 states have call predecessors, (141), 86 states have call successors, (141) [2022-11-02 20:46:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 536 transitions. [2022-11-02 20:46:20,186 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 536 transitions. Word has length 160 [2022-11-02 20:46:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:20,186 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 536 transitions. [2022-11-02 20:46:20,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.37037037037037) internal successors, (145), 24 states have internal predecessors, (145), 12 states have call successors, (49), 8 states have call predecessors, (49), 7 states have return successors, (46), 9 states have call predecessors, (46), 12 states have call successors, (46) [2022-11-02 20:46:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 536 transitions. [2022-11-02 20:46:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 20:46:20,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:20,190 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:20,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:20,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:46:20,405 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:20,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1970898036, now seen corresponding path program 1 times [2022-11-02 20:46:20,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:20,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559159709] [2022-11-02 20:46:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:20,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:46:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:46:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:46:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:46:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:24,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:24,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:46:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:24,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:46:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:46:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:24,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:46:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:25,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:46:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:25,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:46:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:25,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:46:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:25,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 20:46:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:25,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:46:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-02 20:46:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-02 20:46:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:25,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:25,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:46:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:25,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-02 20:46:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-02 20:46:25,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:25,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559159709] [2022-11-02 20:46:25,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559159709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:25,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193780847] [2022-11-02 20:46:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:25,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:25,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:25,435 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:25,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 20:46:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:26,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 2914 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:46:26,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:26,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 20:46:26,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 18 [2022-11-02 20:46:26,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 9 [2022-11-02 20:46:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 122 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-02 20:46:26,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:27,033 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2800 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_eq_ignore_case_harness_~#rhs~0#1.base| v_ArrVal_2800) |c_ULTIMATE.start_aws_byte_buf_eq_ignore_case_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_eq_ignore_case_harness_~#lhs~0#1.offset|) 18446744073709551616) 0)) is different from false [2022-11-02 20:46:27,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193780847] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:27,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:46:27,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12] total 30 [2022-11-02 20:46:27,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902729187] [2022-11-02 20:46:27,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:27,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 20:46:27,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:27,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 20:46:27,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=895, Unknown=1, NotChecked=60, Total=1056 [2022-11-02 20:46:27,055 INFO L87 Difference]: Start difference. First operand 399 states and 536 transitions. Second operand has 30 states, 26 states have (on average 5.076923076923077) internal successors, (132), 25 states have internal predecessors, (132), 11 states have call successors, (41), 6 states have call predecessors, (41), 9 states have return successors, (40), 10 states have call predecessors, (40), 11 states have call successors, (40) [2022-11-02 20:46:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:32,589 INFO L93 Difference]: Finished difference Result 671 states and 937 transitions. [2022-11-02 20:46:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:46:32,590 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 5.076923076923077) internal successors, (132), 25 states have internal predecessors, (132), 11 states have call successors, (41), 6 states have call predecessors, (41), 9 states have return successors, (40), 10 states have call predecessors, (40), 11 states have call successors, (40) Word has length 160 [2022-11-02 20:46:32,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:32,594 INFO L225 Difference]: With dead ends: 671 [2022-11-02 20:46:32,594 INFO L226 Difference]: Without dead ends: 485 [2022-11-02 20:46:32,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 282 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=345, Invalid=2628, Unknown=1, NotChecked=106, Total=3080 [2022-11-02 20:46:32,598 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 206 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 3935 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 4480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 3935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:32,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 822 Invalid, 4480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 3935 Invalid, 0 Unknown, 296 Unchecked, 4.1s Time] [2022-11-02 20:46:32,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-11-02 20:46:32,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 454. [2022-11-02 20:46:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 313 states have (on average 1.121405750798722) internal successors, (351), 326 states have internal predecessors, (351), 104 states have call successors, (104), 26 states have call predecessors, (104), 36 states have return successors, (173), 101 states have call predecessors, (173), 103 states have call successors, (173) [2022-11-02 20:46:32,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 628 transitions. [2022-11-02 20:46:32,660 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 628 transitions. Word has length 160 [2022-11-02 20:46:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:32,661 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 628 transitions. [2022-11-02 20:46:32,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 5.076923076923077) internal successors, (132), 25 states have internal predecessors, (132), 11 states have call successors, (41), 6 states have call predecessors, (41), 9 states have return successors, (40), 10 states have call predecessors, (40), 11 states have call successors, (40) [2022-11-02 20:46:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 628 transitions. [2022-11-02 20:46:32,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-02 20:46:32,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:32,664 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:32,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:32,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:32,881 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:32,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash -405128884, now seen corresponding path program 1 times [2022-11-02 20:46:32,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:32,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448106930] [2022-11-02 20:46:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:32,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:46:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:46:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:46:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:46:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:46:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:46:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:46:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:46:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:46:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:46:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:46:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 20:46:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 20:46:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 20:46:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-02 20:46:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 20:46:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:46:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-02 20:46:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-02 20:46:35,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:35,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448106930] [2022-11-02 20:46:35,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448106930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:35,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:35,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-02 20:46:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725698157] [2022-11-02 20:46:35,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:35,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:46:35,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:46:35,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:46:35,888 INFO L87 Difference]: Start difference. First operand 454 states and 628 transitions. Second operand has 22 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 10 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (21), 9 states have call predecessors, (21), 10 states have call successors, (21) [2022-11-02 20:46:38,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:38,825 INFO L93 Difference]: Finished difference Result 628 states and 906 transitions. [2022-11-02 20:46:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:46:38,826 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 10 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (21), 9 states have call predecessors, (21), 10 states have call successors, (21) Word has length 163 [2022-11-02 20:46:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:38,830 INFO L225 Difference]: With dead ends: 628 [2022-11-02 20:46:38,830 INFO L226 Difference]: Without dead ends: 494 [2022-11-02 20:46:38,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 20:46:38,833 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 306 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:38,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 666 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2258 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:46:38,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-11-02 20:46:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 468. [2022-11-02 20:46:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 318 states have (on average 1.119496855345912) internal successors, (356), 331 states have internal predecessors, (356), 113 states have call successors, (113), 26 states have call predecessors, (113), 36 states have return successors, (188), 110 states have call predecessors, (188), 112 states have call successors, (188) [2022-11-02 20:46:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 657 transitions. [2022-11-02 20:46:38,908 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 657 transitions. Word has length 163 [2022-11-02 20:46:38,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:38,908 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 657 transitions. [2022-11-02 20:46:38,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 10 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (21), 9 states have call predecessors, (21), 10 states have call successors, (21) [2022-11-02 20:46:38,909 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 657 transitions. [2022-11-02 20:46:38,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:46:38,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:38,912 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:38,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:46:38,912 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:38,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:38,913 INFO L85 PathProgramCache]: Analyzing trace with hash 706910291, now seen corresponding path program 2 times [2022-11-02 20:46:38,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:38,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016186955] [2022-11-02 20:46:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:38,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:41,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:46:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:46:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:41,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:46:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:41,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:46:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:41,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:41,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:46:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:41,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:46:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:42,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:46:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:42,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:46:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:42,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:46:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:42,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:46:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:46:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:42,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:46:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:42,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:46:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:46:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:42,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:46:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:42,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-02 20:46:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-02 20:46:42,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:42,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016186955] [2022-11-02 20:46:42,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016186955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:42,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750588886] [2022-11-02 20:46:42,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:46:42,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:42,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:42,293 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:42,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5cc12bb-d803-430c-b632-39c467607f2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 20:46:43,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:46:43,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:46:43,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-02 20:46:43,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:43,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 20:46:43,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 25 [2022-11-02 20:46:43,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 25 [2022-11-02 20:46:44,390 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base_BEFORE_CALL_15| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base_BEFORE_CALL_15|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_13|) 16)) (not (= |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base_BEFORE_CALL_15| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_13|)))) is different from true [2022-11-02 20:46:45,683 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base_BEFORE_CALL_16| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base_BEFORE_CALL_16| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_14|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_14|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base_BEFORE_CALL_16|) 16)))) is different from true [2022-11-02 20:46:46,981 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_15| Int) (|v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base_BEFORE_CALL_17| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base_BEFORE_CALL_17| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_15|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base_BEFORE_CALL_17|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_15|) 16)))) is different from true [2022-11-02 20:46:54,412 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_16| Int) (|ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base|) 16))) (and (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_16|) 16)) (not (= |ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_16|)) (not (= (mod .cse0 18446744073709551616) 0))))) is different from true [2022-11-02 20:46:56,200 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_17| Int) (|ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base|) 16))) (and (not (= |ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_17|)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_17|) 16)) (not (= (mod .cse0 18446744073709551616) 0))))) is different from true [2022-11-02 20:46:58,070 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_18| Int) (|ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base|) 16))) (and (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_18|) 16)) (not (= (mod .cse0 18446744073709551616) 0)) (not (= |ULTIMATE.start_aws_byte_buf_eq_ignore_case_~b#1.base| |v_ULTIMATE.start_aws_byte_buf_eq_ignore_case_~a#1.base_BEFORE_CALL_18|))))) is different from true