./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a --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 2fd96106837ff3ee9325c248fea6969b94a5a1f2cee078fd159398f70369aafc --- 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-b5237d8 [2022-11-21 14:02:29,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 14:02:29,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 14:02:29,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 14:02:29,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 14:02:29,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 14:02:29,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 14:02:29,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 14:02:29,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 14:02:29,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 14:02:29,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 14:02:29,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 14:02:29,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 14:02:29,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 14:02:29,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 14:02:29,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 14:02:29,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 14:02:29,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 14:02:29,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 14:02:29,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 14:02:29,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 14:02:29,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 14:02:29,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 14:02:29,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 14:02:29,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 14:02:29,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 14:02:29,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 14:02:29,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 14:02:29,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 14:02:29,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 14:02:29,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 14:02:29,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 14:02:29,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 14:02:29,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 14:02:29,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 14:02:29,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 14:02:29,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 14:02:29,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 14:02:29,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 14:02:29,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 14:02:29,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 14:02:29,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 14:02:29,917 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 14:02:29,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 14:02:29,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 14:02:29,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 14:02:29,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 14:02:29,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 14:02:29,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 14:02:29,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 14:02:29,920 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 14:02:29,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 14:02:29,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 14:02:29,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 14:02:29,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 14:02:29,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 14:02:29,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 14:02:29,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 14:02:29,923 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 14:02:29,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 14:02:29,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 14:02:29,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 14:02:29,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 14:02:29,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:02:29,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 14:02:29,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 14:02:29,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 14:02:29,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 14:02:29,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 14:02:29,926 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 14:02:29,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 14:02:29,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 14:02:29,926 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_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fd96106837ff3ee9325c248fea6969b94a5a1f2cee078fd159398f70369aafc [2022-11-21 14:02:30,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 14:02:30,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 14:02:30,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 14:02:30,236 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 14:02:30,237 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 14:02:30,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i [2022-11-21 14:02:33,322 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 14:02:33,855 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 14:02:33,855 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i [2022-11-21 14:02:33,919 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/data/905253d2a/f8a6eeaa3ac3454f97e9147c17c85269/FLAG5650df56c [2022-11-21 14:02:33,942 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/data/905253d2a/f8a6eeaa3ac3454f97e9147c17c85269 [2022-11-21 14:02:33,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 14:02:33,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 14:02:33,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 14:02:33,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 14:02:33,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 14:02:33,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5f872c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33, skipping insertion in model container [2022-11-21 14:02:33,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:34,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 14:02:34,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 14:02:34,484 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4499,4512] [2022-11-21 14:02:34,495 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4559,4572] [2022-11-21 14:02:35,611 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:35,615 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:35,616 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:35,617 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:35,620 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:35,641 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:35,642 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:35,644 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:35,645 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,042 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-21 14:02:36,043 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-21 14:02:36,045 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-21 14:02:36,046 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-21 14:02:36,048 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-21 14:02:36,049 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-21 14:02:36,049 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-21 14:02:36,050 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-21 14:02:36,051 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-21 14:02:36,052 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-21 14:02:36,240 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-21 14:02:36,383 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,383 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:02:36,539 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 14:02:36,556 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4499,4512] [2022-11-21 14:02:36,557 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i[4559,4572] [2022-11-21 14:02:36,599 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,600 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,600 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,601 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,602 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,610 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,610 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,612 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,612 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,653 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-21 14:02:36,654 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-21 14:02:36,655 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-21 14:02:36,655 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-21 14:02:36,656 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-21 14:02:36,657 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-21 14:02:36,657 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-21 14:02:36,658 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-21 14:02:36,659 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-21 14:02:36,659 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-21 14:02:36,707 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-21 14:02:36,825 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,828 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:02:36,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:02:37,123 INFO L208 MainTranslator]: Completed translation [2022-11-21 14:02:37,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:37 WrapperNode [2022-11-21 14:02:37,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 14:02:37,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 14:02:37,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 14:02:37,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 14:02:37,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:37" (1/1) ... [2022-11-21 14:02:37,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:37" (1/1) ... [2022-11-21 14:02:37,323 INFO L138 Inliner]: procedures = 690, calls = 2619, calls flagged for inlining = 62, calls inlined = 10, statements flattened = 893 [2022-11-21 14:02:37,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 14:02:37,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 14:02:37,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 14:02:37,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 14:02:37,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:37" (1/1) ... [2022-11-21 14:02:37,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:37" (1/1) ... [2022-11-21 14:02:37,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:37" (1/1) ... [2022-11-21 14:02:37,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:37" (1/1) ... [2022-11-21 14:02:37,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:37" (1/1) ... [2022-11-21 14:02:37,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:37" (1/1) ... [2022-11-21 14:02:37,451 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:37" (1/1) ... [2022-11-21 14:02:37,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:37" (1/1) ... [2022-11-21 14:02:37,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 14:02:37,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 14:02:37,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 14:02:37,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 14:02:37,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:37" (1/1) ... [2022-11-21 14:02:37,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:02:37,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:02:37,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 14:02:37,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 14:02:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-21 14:02:37,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-21 14:02:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 14:02:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-21 14:02:37,563 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-21 14:02:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 14:02:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-21 14:02:37,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-21 14:02:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2022-11-21 14:02:37,610 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2022-11-21 14:02:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 14:02:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 14:02:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 14:02:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 14:02:37,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 14:02:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-21 14:02:37,610 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-21 14:02:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-21 14:02:37,611 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-21 14:02:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 14:02:37,611 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 14:02:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 14:02:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 14:02:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 14:02:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2022-11-21 14:02:37,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2022-11-21 14:02:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 14:02:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 14:02:38,043 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 14:02:38,045 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 14:02:39,618 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 14:02:39,630 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 14:02:39,631 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 14:02:39,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:02:39 BoogieIcfgContainer [2022-11-21 14:02:39,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 14:02:39,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 14:02:39,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 14:02:39,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 14:02:39,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:02:33" (1/3) ... [2022-11-21 14:02:39,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c65f662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:02:39, skipping insertion in model container [2022-11-21 14:02:39,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:37" (2/3) ... [2022-11-21 14:02:39,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c65f662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:02:39, skipping insertion in model container [2022-11-21 14:02:39,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:02:39" (3/3) ... [2022-11-21 14:02:39,648 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_trim_pred_harness.i [2022-11-21 14:02:39,670 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 14:02:39,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 14:02:39,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 14:02:39,752 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;@48ebb2cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 14:02:39,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 14:02:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 78 states have internal predecessors, (95), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-21 14:02:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 14:02:39,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:39,776 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:39,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:39,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:39,783 INFO L85 PathProgramCache]: Analyzing trace with hash -484495775, now seen corresponding path program 1 times [2022-11-21 14:02:39,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:39,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886130363] [2022-11-21 14:02:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:39,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:40,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:02:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:40,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:02:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:40,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:02:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:02:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:40,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 14:02:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:40,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 14:02:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:40,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:02:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:40,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 14:02:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:40,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:02:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:40,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:02:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:40,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 14:02:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-21 14:02:40,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:40,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886130363] [2022-11-21 14:02:40,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886130363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:40,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:02:40,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 14:02:40,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024212360] [2022-11-21 14:02:40,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:40,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 14:02:40,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:40,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 14:02:40,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 14:02:40,821 INFO L87 Difference]: Start difference. First operand has 124 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 78 states have internal predecessors, (95), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 14:02:40,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:40,900 INFO L93 Difference]: Finished difference Result 244 states and 355 transitions. [2022-11-21 14:02:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 14:02:40,902 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 79 [2022-11-21 14:02:40,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:40,911 INFO L225 Difference]: With dead ends: 244 [2022-11-21 14:02:40,911 INFO L226 Difference]: Without dead ends: 115 [2022-11-21 14:02:40,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 14:02:40,920 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:40,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:02:40,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-21 14:02:40,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-11-21 14:02:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 71 states have internal predecessors, (82), 37 states have call successors, (37), 8 states have call predecessors, (37), 7 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-21 14:02:40,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 154 transitions. [2022-11-21 14:02:40,971 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 154 transitions. Word has length 79 [2022-11-21 14:02:40,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:40,972 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 154 transitions. [2022-11-21 14:02:40,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 14:02:40,972 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 154 transitions. [2022-11-21 14:02:40,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-21 14:02:40,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:40,975 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:40,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 14:02:40,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1850978430, now seen corresponding path program 1 times [2022-11-21 14:02:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:40,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004983482] [2022-11-21 14:02:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:02:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:41,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:02:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:41,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:02:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:41,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:02:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:41,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 14:02:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 14:02:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:41,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:02:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:41,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 14:02:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:02:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:41,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:02:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:41,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 14:02:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-21 14:02:42,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:42,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004983482] [2022-11-21 14:02:42,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004983482] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:02:42,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654857903] [2022-11-21 14:02:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:42,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:02:42,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:02:42,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:02:42,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 14:02:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:42,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 2548 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 14:02:42,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:02:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 14:02:42,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:02:42,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654857903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:42,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:02:42,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2022-11-21 14:02:42,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59891724] [2022-11-21 14:02:42,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:42,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:02:42,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:42,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:02:42,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:02:42,911 INFO L87 Difference]: Start difference. First operand 115 states and 154 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 14:02:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:43,200 INFO L93 Difference]: Finished difference Result 213 states and 298 transitions. [2022-11-21 14:02:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:02:43,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 81 [2022-11-21 14:02:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:43,208 INFO L225 Difference]: With dead ends: 213 [2022-11-21 14:02:43,208 INFO L226 Difference]: Without dead ends: 118 [2022-11-21 14:02:43,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:02:43,211 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 171 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:43,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 294 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 14:02:43,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-21 14:02:43,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-11-21 14:02:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (45), 35 states have call predecessors, (45), 35 states have call successors, (45) [2022-11-21 14:02:43,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 166 transitions. [2022-11-21 14:02:43,246 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 166 transitions. Word has length 81 [2022-11-21 14:02:43,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:43,247 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 166 transitions. [2022-11-21 14:02:43,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 14:02:43,248 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 166 transitions. [2022-11-21 14:02:43,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-21 14:02:43,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:43,251 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:43,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 14:02:43,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:02:43,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:43,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:43,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1473940729, now seen corresponding path program 1 times [2022-11-21 14:02:43,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:43,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630029715] [2022-11-21 14:02:43,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:43,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:02:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:02:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:02:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:02:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:02:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:02:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 14:02:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:02:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 14:02:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 14:02:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 14:02:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-21 14:02:44,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:44,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630029715] [2022-11-21 14:02:44,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630029715] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:02:44,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699767383] [2022-11-21 14:02:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:44,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:02:44,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:02:44,892 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:02:44,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 14:02:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:45,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 14:02:45,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:02:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-21 14:02:45,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:02:45,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699767383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:45,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:02:45,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-21 14:02:45,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484621172] [2022-11-21 14:02:45,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:45,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:02:45,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:45,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:02:45,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:02:45,641 INFO L87 Difference]: Start difference. First operand 118 states and 166 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-21 14:02:46,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:46,014 INFO L93 Difference]: Finished difference Result 208 states and 295 transitions. [2022-11-21 14:02:46,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:02:46,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 83 [2022-11-21 14:02:46,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:46,017 INFO L225 Difference]: With dead ends: 208 [2022-11-21 14:02:46,017 INFO L226 Difference]: Without dead ends: 118 [2022-11-21 14:02:46,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-21 14:02:46,019 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 189 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:46,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 469 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 14:02:46,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-21 14:02:46,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-11-21 14:02:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (43), 35 states have call predecessors, (43), 35 states have call successors, (43) [2022-11-21 14:02:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 164 transitions. [2022-11-21 14:02:46,038 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 164 transitions. Word has length 83 [2022-11-21 14:02:46,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:46,038 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 164 transitions. [2022-11-21 14:02:46,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-21 14:02:46,039 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 164 transitions. [2022-11-21 14:02:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-21 14:02:46,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:46,041 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:46,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 14:02:46,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-21 14:02:46,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:46,259 INFO L85 PathProgramCache]: Analyzing trace with hash -346545804, now seen corresponding path program 2 times [2022-11-21 14:02:46,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:46,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884440220] [2022-11-21 14:02:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:46,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:47,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:02:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:47,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:02:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:02:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:47,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:02:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:47,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:02:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:47,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:02:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:02:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:47,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 14:02:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 14:02:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 14:02:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 14:02:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-21 14:02:47,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:47,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884440220] [2022-11-21 14:02:47,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884440220] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:02:47,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283343695] [2022-11-21 14:02:47,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:02:47,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:02:47,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:02:47,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:02:47,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 14:02:48,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:02:48,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:02:48,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 14:02:48,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:02:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-21 14:02:48,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:02:48,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283343695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:48,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:02:48,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 11 [2022-11-21 14:02:48,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033179322] [2022-11-21 14:02:48,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:48,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:02:48,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:48,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:02:48,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:02:48,563 INFO L87 Difference]: Start difference. First operand 118 states and 164 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-21 14:02:48,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:48,787 INFO L93 Difference]: Finished difference Result 201 states and 281 transitions. [2022-11-21 14:02:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:02:48,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 85 [2022-11-21 14:02:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:48,790 INFO L225 Difference]: With dead ends: 201 [2022-11-21 14:02:48,790 INFO L226 Difference]: Without dead ends: 118 [2022-11-21 14:02:48,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-21 14:02:48,792 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 77 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:48,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 669 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 14:02:48,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-21 14:02:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-11-21 14:02:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-11-21 14:02:48,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 162 transitions. [2022-11-21 14:02:48,811 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 162 transitions. Word has length 85 [2022-11-21 14:02:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:48,812 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 162 transitions. [2022-11-21 14:02:48,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-21 14:02:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 162 transitions. [2022-11-21 14:02:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 14:02:48,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:48,814 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:48,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 14:02:49,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:02:49,026 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:49,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:49,027 INFO L85 PathProgramCache]: Analyzing trace with hash 625417492, now seen corresponding path program 1 times [2022-11-21 14:02:49,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:49,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248414182] [2022-11-21 14:02:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:49,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:49,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:02:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:49,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:02:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:49,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:02:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:49,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:02:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:49,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:02:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:49,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:02:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:49,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:02:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:50,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 14:02:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:50,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:02:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 14:02:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:50,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 14:02:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-21 14:02:50,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:50,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248414182] [2022-11-21 14:02:50,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248414182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:50,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:02:50,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 14:02:50,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511905062] [2022-11-21 14:02:50,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:50,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:02:50,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:50,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:02:50,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:02:50,195 INFO L87 Difference]: Start difference. First operand 118 states and 162 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-21 14:02:50,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:50,324 INFO L93 Difference]: Finished difference Result 130 states and 185 transitions. [2022-11-21 14:02:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:02:50,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 89 [2022-11-21 14:02:50,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:50,329 INFO L225 Difference]: With dead ends: 130 [2022-11-21 14:02:50,330 INFO L226 Difference]: Without dead ends: 128 [2022-11-21 14:02:50,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:02:50,333 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 17 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:50,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1057 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:02:50,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-21 14:02:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2022-11-21 14:02:50,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 81 states have internal predecessors, (90), 38 states have call successors, (38), 9 states have call predecessors, (38), 10 states have return successors, (54), 36 states have call predecessors, (54), 36 states have call successors, (54) [2022-11-21 14:02:50,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 182 transitions. [2022-11-21 14:02:50,367 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 182 transitions. Word has length 89 [2022-11-21 14:02:50,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:50,367 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 182 transitions. [2022-11-21 14:02:50,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-21 14:02:50,367 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 182 transitions. [2022-11-21 14:02:50,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-21 14:02:50,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:50,369 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:50,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 14:02:50,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:50,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:50,370 INFO L85 PathProgramCache]: Analyzing trace with hash 852132828, now seen corresponding path program 1 times [2022-11-21 14:02:50,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:50,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502486354] [2022-11-21 14:02:50,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:50,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:51,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:02:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:51,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:02:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:51,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:02:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:51,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:02:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:51,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:02:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:51,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:02:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:51,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:02:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:51,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 14:02:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:51,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:02:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:51,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 14:02:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:51,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 14:02:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-21 14:02:52,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:52,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502486354] [2022-11-21 14:02:52,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502486354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:52,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:02:52,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 14:02:52,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275972892] [2022-11-21 14:02:52,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:52,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:02:52,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:52,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:02:52,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:02:52,152 INFO L87 Difference]: Start difference. First operand 127 states and 182 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 14:02:52,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:52,915 INFO L93 Difference]: Finished difference Result 225 states and 333 transitions. [2022-11-21 14:02:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 14:02:52,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-11-21 14:02:52,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:52,917 INFO L225 Difference]: With dead ends: 225 [2022-11-21 14:02:52,917 INFO L226 Difference]: Without dead ends: 148 [2022-11-21 14:02:52,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:02:52,919 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 46 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:52,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 766 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 14:02:52,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-21 14:02:52,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 134. [2022-11-21 14:02:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 82 states have (on average 1.170731707317073) internal successors, (96), 86 states have internal predecessors, (96), 41 states have call successors, (41), 9 states have call predecessors, (41), 10 states have return successors, (58), 38 states have call predecessors, (58), 39 states have call successors, (58) [2022-11-21 14:02:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 195 transitions. [2022-11-21 14:02:52,943 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 195 transitions. Word has length 93 [2022-11-21 14:02:52,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:52,944 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 195 transitions. [2022-11-21 14:02:52,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 14:02:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 195 transitions. [2022-11-21 14:02:52,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-21 14:02:52,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:52,946 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 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] [2022-11-21 14:02:52,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 14:02:52,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:52,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1211514462, now seen corresponding path program 1 times [2022-11-21 14:02:52,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:52,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939485254] [2022-11-21 14:02:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:52,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:53,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:02:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:53,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:02:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:53,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:02:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:02:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:02:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:02:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:53,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:02:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:53,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 14:02:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:02:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:53,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 14:02:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:53,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:02:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-21 14:02:53,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:53,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939485254] [2022-11-21 14:02:53,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939485254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:53,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:02:53,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:02:53,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806223894] [2022-11-21 14:02:53,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:53,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 14:02:53,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:53,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 14:02:53,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 14:02:53,288 INFO L87 Difference]: Start difference. First operand 134 states and 195 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 14:02:53,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:53,317 INFO L93 Difference]: Finished difference Result 223 states and 324 transitions. [2022-11-21 14:02:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:02:53,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2022-11-21 14:02:53,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:53,320 INFO L225 Difference]: With dead ends: 223 [2022-11-21 14:02:53,320 INFO L226 Difference]: Without dead ends: 135 [2022-11-21 14:02:53,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 14:02:53,322 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:53,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 301 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:02:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-21 14:02:53,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2022-11-21 14:02:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 87 states have internal predecessors, (96), 41 states have call successors, (41), 9 states have call predecessors, (41), 10 states have return successors, (58), 38 states have call predecessors, (58), 39 states have call successors, (58) [2022-11-21 14:02:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 195 transitions. [2022-11-21 14:02:53,344 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 195 transitions. Word has length 96 [2022-11-21 14:02:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:53,345 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 195 transitions. [2022-11-21 14:02:53,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 14:02:53,345 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 195 transitions. [2022-11-21 14:02:53,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-21 14:02:53,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:53,347 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:53,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 14:02:53,348 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:53,348 INFO L85 PathProgramCache]: Analyzing trace with hash -247569564, now seen corresponding path program 1 times [2022-11-21 14:02:53,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:53,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140927281] [2022-11-21 14:02:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:53,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:02:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:02:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:02:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:02:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:02:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:02:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:02:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 14:02:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:02:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 14:02:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:02:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 14:02:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-21 14:02:54,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:54,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140927281] [2022-11-21 14:02:54,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140927281] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:02:54,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487945533] [2022-11-21 14:02:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:54,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:02:54,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:02:54,802 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:02:54,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 14:02:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:55,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 2608 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-21 14:02:55,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:02:55,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2022-11-21 14:02:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 14:02:55,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:02:55,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487945533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:55,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:02:55,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 10 [2022-11-21 14:02:55,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093859401] [2022-11-21 14:02:55,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:55,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:02:55,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:02:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:02:55,854 INFO L87 Difference]: Start difference. First operand 135 states and 195 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 14:02:57,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:57,555 INFO L93 Difference]: Finished difference Result 349 states and 517 transitions. [2022-11-21 14:02:57,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:02:57,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2022-11-21 14:02:57,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:57,558 INFO L225 Difference]: With dead ends: 349 [2022-11-21 14:02:57,558 INFO L226 Difference]: Without dead ends: 260 [2022-11-21 14:02:57,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 119 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-11-21 14:02:57,560 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 196 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:57,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 717 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 14:02:57,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-21 14:02:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 247. [2022-11-21 14:02:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 151 states have (on average 1.1655629139072847) internal successors, (176), 157 states have internal predecessors, (176), 78 states have call successors, (78), 16 states have call predecessors, (78), 17 states have return successors, (113), 73 states have call predecessors, (113), 74 states have call successors, (113) [2022-11-21 14:02:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 367 transitions. [2022-11-21 14:02:57,607 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 367 transitions. Word has length 99 [2022-11-21 14:02:57,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:57,607 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 367 transitions. [2022-11-21 14:02:57,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 14:02:57,608 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 367 transitions. [2022-11-21 14:02:57,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-21 14:02:57,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:57,610 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 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] [2022-11-21 14:02:57,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 14:02:57,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:02:57,820 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:57,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:57,821 INFO L85 PathProgramCache]: Analyzing trace with hash 665892604, now seen corresponding path program 1 times [2022-11-21 14:02:57,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:57,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062473492] [2022-11-21 14:02:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:57,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:02:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:02:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:02:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:02:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:02:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:02:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:02:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 14:02:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:02:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 14:02:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 14:02:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 14:02:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 14:02:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-21 14:02:58,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:58,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062473492] [2022-11-21 14:02:58,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062473492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:58,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:02:58,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:02:58,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699083846] [2022-11-21 14:02:58,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:58,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 14:02:58,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:58,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 14:02:58,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:02:58,418 INFO L87 Difference]: Start difference. First operand 247 states and 367 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-21 14:02:58,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:58,514 INFO L93 Difference]: Finished difference Result 389 states and 573 transitions. [2022-11-21 14:02:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 14:02:58,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2022-11-21 14:02:58,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:58,517 INFO L225 Difference]: With dead ends: 389 [2022-11-21 14:02:58,517 INFO L226 Difference]: Without dead ends: 244 [2022-11-21 14:02:58,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:02:58,521 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 18 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:58,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 522 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:02:58,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-21 14:02:58,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-21 14:02:58,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 149 states have (on average 1.1610738255033557) internal successors, (173), 154 states have internal predecessors, (173), 78 states have call successors, (78), 16 states have call predecessors, (78), 16 states have return successors, (109), 73 states have call predecessors, (109), 74 states have call successors, (109) [2022-11-21 14:02:58,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 360 transitions. [2022-11-21 14:02:58,568 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 360 transitions. Word has length 101 [2022-11-21 14:02:58,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:58,569 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 360 transitions. [2022-11-21 14:02:58,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-21 14:02:58,569 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 360 transitions. [2022-11-21 14:02:58,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-21 14:02:58,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:58,572 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2022-11-21 14:02:58,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 14:02:58,573 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:58,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:58,573 INFO L85 PathProgramCache]: Analyzing trace with hash 762751521, now seen corresponding path program 1 times [2022-11-21 14:02:58,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:58,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967711004] [2022-11-21 14:02:58,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:58,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:02:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:02:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:02:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:02:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:02:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:02:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:02:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 14:02:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:02:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 14:02:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 14:02:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 14:02:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 14:02:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-21 14:02:59,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:59,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967711004] [2022-11-21 14:02:59,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967711004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:59,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:02:59,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 14:02:59,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500064221] [2022-11-21 14:02:59,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:59,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:02:59,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:59,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:02:59,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:02:59,498 INFO L87 Difference]: Start difference. First operand 244 states and 360 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-21 14:02:59,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:59,628 INFO L93 Difference]: Finished difference Result 252 states and 368 transitions. [2022-11-21 14:02:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:02:59,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 103 [2022-11-21 14:02:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:59,631 INFO L225 Difference]: With dead ends: 252 [2022-11-21 14:02:59,631 INFO L226 Difference]: Without dead ends: 250 [2022-11-21 14:02:59,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:02:59,632 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 17 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:59,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1072 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:02:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-21 14:02:59,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2022-11-21 14:02:59,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 152 states have (on average 1.1578947368421053) internal successors, (176), 157 states have internal predecessors, (176), 79 states have call successors, (79), 17 states have call predecessors, (79), 17 states have return successors, (110), 74 states have call predecessors, (110), 75 states have call successors, (110) [2022-11-21 14:02:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 365 transitions. [2022-11-21 14:02:59,664 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 365 transitions. Word has length 103 [2022-11-21 14:02:59,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:59,665 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 365 transitions. [2022-11-21 14:02:59,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-21 14:02:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 365 transitions. [2022-11-21 14:02:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-21 14:02:59,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:59,667 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 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] [2022-11-21 14:02:59,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 14:02:59,668 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:59,668 INFO L85 PathProgramCache]: Analyzing trace with hash 932039324, now seen corresponding path program 2 times [2022-11-21 14:02:59,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:59,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955885653] [2022-11-21 14:02:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:59,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:01,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:01,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:01,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:03:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:03:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:03:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:01,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:03:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:01,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:03:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:01,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 14:03:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:02,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 14:03:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:02,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 14:03:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:02,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:03:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:02,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 14:03:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-21 14:03:02,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:02,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955885653] [2022-11-21 14:03:02,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955885653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:03:02,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572369079] [2022-11-21 14:03:02,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:03:02,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:02,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:02,171 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:03:02,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 14:03:03,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:03:03,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:03:03,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-21 14:03:03,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 41 proven. 16 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-21 14:03:05,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:03:05,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-21 14:03:05,865 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-21 14:03:05,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-11-21 14:03:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-21 14:03:05,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572369079] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:03:05,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:03:05,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 25 [2022-11-21 14:03:05,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144406991] [2022-11-21 14:03:05,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:03:05,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 14:03:05,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:05,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 14:03:05,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2022-11-21 14:03:05,894 INFO L87 Difference]: Start difference. First operand 249 states and 365 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 23 states have internal predecessors, (115), 9 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-11-21 14:03:13,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:13,865 INFO L93 Difference]: Finished difference Result 696 states and 1044 transitions. [2022-11-21 14:03:13,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 14:03:13,866 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 23 states have internal predecessors, (115), 9 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) Word has length 103 [2022-11-21 14:03:13,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:13,870 INFO L225 Difference]: With dead ends: 696 [2022-11-21 14:03:13,870 INFO L226 Difference]: Without dead ends: 469 [2022-11-21 14:03:13,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 203 SyntacticMatches, 20 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=288, Invalid=1874, Unknown=0, NotChecked=0, Total=2162 [2022-11-21 14:03:13,873 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 357 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 4173 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 4485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 4173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:13,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1595 Invalid, 4485 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [312 Valid, 4173 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-21 14:03:13,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-21 14:03:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 375. [2022-11-21 14:03:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 229 states have (on average 1.1353711790393013) internal successors, (260), 234 states have internal predecessors, (260), 117 states have call successors, (117), 26 states have call predecessors, (117), 28 states have return successors, (161), 114 states have call predecessors, (161), 111 states have call successors, (161) [2022-11-21 14:03:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 538 transitions. [2022-11-21 14:03:13,944 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 538 transitions. Word has length 103 [2022-11-21 14:03:13,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:13,944 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 538 transitions. [2022-11-21 14:03:13,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 23 states have internal predecessors, (115), 9 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-11-21 14:03:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 538 transitions. [2022-11-21 14:03:13,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-21 14:03:13,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:13,947 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:13,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 14:03:14,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 14:03:14,158 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:14,159 INFO L85 PathProgramCache]: Analyzing trace with hash -242720116, now seen corresponding path program 1 times [2022-11-21 14:03:14,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:14,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741091022] [2022-11-21 14:03:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:14,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:03:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-21 14:03:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 14:03:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 14:03:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 14:03:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:03:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 14:03:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:03:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-21 14:03:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 14:03:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-21 14:03:15,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:15,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741091022] [2022-11-21 14:03:15,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741091022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:03:15,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612437804] [2022-11-21 14:03:15,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:15,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:15,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:15,306 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:03:15,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 14:03:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 14:03:15,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 14:03:15,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:15,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612437804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:15,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:03:15,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2022-11-21 14:03:15,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579546381] [2022-11-21 14:03:15,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:15,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:03:15,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:15,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:03:15,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:03:15,936 INFO L87 Difference]: Start difference. First operand 375 states and 538 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 14:03:16,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:16,194 INFO L93 Difference]: Finished difference Result 718 states and 1055 transitions. [2022-11-21 14:03:16,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 14:03:16,195 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-11-21 14:03:16,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:16,198 INFO L225 Difference]: With dead ends: 718 [2022-11-21 14:03:16,198 INFO L226 Difference]: Without dead ends: 390 [2022-11-21 14:03:16,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-21 14:03:16,201 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 13 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:16,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1125 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:03:16,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-21 14:03:16,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 380. [2022-11-21 14:03:16,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 233 states have (on average 1.1330472103004292) internal successors, (264), 239 states have internal predecessors, (264), 117 states have call successors, (117), 26 states have call predecessors, (117), 29 states have return successors, (172), 114 states have call predecessors, (172), 111 states have call successors, (172) [2022-11-21 14:03:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 553 transitions. [2022-11-21 14:03:16,269 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 553 transitions. Word has length 111 [2022-11-21 14:03:16,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:16,270 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 553 transitions. [2022-11-21 14:03:16,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 14:03:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 553 transitions. [2022-11-21 14:03:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-21 14:03:16,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:16,273 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:16,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 14:03:16,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 14:03:16,484 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:16,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash -278957595, now seen corresponding path program 1 times [2022-11-21 14:03:16,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:16,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929052188] [2022-11-21 14:03:16,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:16,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:17,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:17,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:03:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:17,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 14:03:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:03:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:17,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 14:03:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:17,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:03:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:17,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 14:03:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:17,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:03:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:17,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 14:03:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:17,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 14:03:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:17,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 14:03:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-21 14:03:17,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:17,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929052188] [2022-11-21 14:03:17,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929052188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:03:17,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068635836] [2022-11-21 14:03:17,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:17,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:17,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:17,531 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:03:17,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 14:03:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:18,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 14:03:18,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 14:03:18,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:18,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068635836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:18,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:03:18,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2022-11-21 14:03:18,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681881703] [2022-11-21 14:03:18,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:18,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:03:18,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:03:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:03:18,153 INFO L87 Difference]: Start difference. First operand 380 states and 553 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 14:03:18,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:18,424 INFO L93 Difference]: Finished difference Result 671 states and 985 transitions. [2022-11-21 14:03:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 14:03:18,425 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2022-11-21 14:03:18,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:18,427 INFO L225 Difference]: With dead ends: 671 [2022-11-21 14:03:18,428 INFO L226 Difference]: Without dead ends: 390 [2022-11-21 14:03:18,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-21 14:03:18,430 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 13 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:18,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1118 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 14:03:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-21 14:03:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 380. [2022-11-21 14:03:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 233 states have (on average 1.1330472103004292) internal successors, (264), 239 states have internal predecessors, (264), 117 states have call successors, (117), 26 states have call predecessors, (117), 29 states have return successors, (171), 114 states have call predecessors, (171), 111 states have call successors, (171) [2022-11-21 14:03:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 552 transitions. [2022-11-21 14:03:18,516 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 552 transitions. Word has length 113 [2022-11-21 14:03:18,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:18,516 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 552 transitions. [2022-11-21 14:03:18,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 14:03:18,517 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 552 transitions. [2022-11-21 14:03:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-21 14:03:18,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:18,519 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-21 14:03:18,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 14:03:18,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:18,729 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:18,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:18,729 INFO L85 PathProgramCache]: Analyzing trace with hash 196598846, now seen corresponding path program 2 times [2022-11-21 14:03:18,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:18,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619183057] [2022-11-21 14:03:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:18,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:19,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:19,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:03:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 14:03:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:19,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:03:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:03:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 14:03:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:19,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 14:03:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:19,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 14:03:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:19,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 14:03:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:19,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 14:03:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 14:03:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-21 14:03:19,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:19,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619183057] [2022-11-21 14:03:19,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619183057] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:03:19,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492395775] [2022-11-21 14:03:19,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:03:19,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:19,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:19,819 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:03:19,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 14:03:20,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:03:20,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:03:20,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 14:03:20,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:22,712 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_8| Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_14|) (+ |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_8| 8))))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_8| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_14|) (+ |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_8| 8)) 0)))) is different from true [2022-11-21 14:03:24,808 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_15| Int) (|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_9| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_15|) (+ |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_9| 8)) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_15| Int) (|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_9| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_15|) (+ |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_9| 8)) 0)))) is different from true [2022-11-21 14:03:31,007 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_17 Int) (v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_13 Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_17) (+ 8 v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_13))))) (exists ((v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_17 Int) (v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_13 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_17) (+ 8 v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_13)) 0)))) is different from true [2022-11-21 14:03:39,116 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:03:47,283 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:03:55,434 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:04:01,558 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:04:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 110 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 4 not checked. [2022-11-21 14:04:01,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:04,410 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-21 14:04:04,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-11-21 14:04:04,426 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-21 14:04:04,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-11-21 14:04:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 22 proven. 30 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-21 14:04:04,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492395775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:04,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:04:04,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 13] total 29 [2022-11-21 14:04:04,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765698372] [2022-11-21 14:04:04,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:04,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-21 14:04:04,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-21 14:04:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=577, Unknown=7, NotChecked=150, Total=812 [2022-11-21 14:04:04,461 INFO L87 Difference]: Start difference. First operand 380 states and 552 transitions. Second operand has 29 states, 27 states have (on average 4.111111111111111) internal successors, (111), 26 states have internal predecessors, (111), 5 states have call successors, (26), 6 states have call predecessors, (26), 9 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-11-21 14:04:06,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:08,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:10,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:13,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:15,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:19,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:21,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:25,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:27,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:29,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:31,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:37,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:39,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:41,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:49,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:51,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:53,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:55,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:57,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:59,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:08,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:12,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:22,784 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:05:30,855 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:05:39,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:39,607 INFO L93 Difference]: Finished difference Result 843 states and 1347 transitions. [2022-11-21 14:05:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-21 14:05:39,608 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.111111111111111) internal successors, (111), 26 states have internal predecessors, (111), 5 states have call successors, (26), 6 states have call predecessors, (26), 9 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 115 [2022-11-21 14:05:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:39,613 INFO L225 Difference]: With dead ends: 843 [2022-11-21 14:05:39,613 INFO L226 Difference]: Without dead ends: 612 [2022-11-21 14:05:39,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 237 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 88.8s TimeCoverageRelationStatistics Valid=415, Invalid=2998, Unknown=21, NotChecked=348, Total=3782 [2022-11-21 14:05:39,616 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 173 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 3336 mSolverCounterSat, 52 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 4204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3336 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 794 IncrementalHoareTripleChecker+Unchecked, 49.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:39,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 2312 Invalid, 4204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 3336 Invalid, 22 Unknown, 794 Unchecked, 49.1s Time] [2022-11-21 14:05:39,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-21 14:05:39,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 518. [2022-11-21 14:05:39,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 333 states have (on average 1.1531531531531531) internal successors, (384), 344 states have internal predecessors, (384), 144 states have call successors, (144), 31 states have call predecessors, (144), 40 states have return successors, (260), 142 states have call predecessors, (260), 138 states have call successors, (260) [2022-11-21 14:05:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 788 transitions. [2022-11-21 14:05:39,705 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 788 transitions. Word has length 115 [2022-11-21 14:05:39,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:39,705 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 788 transitions. [2022-11-21 14:05:39,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.111111111111111) internal successors, (111), 26 states have internal predecessors, (111), 5 states have call successors, (26), 6 states have call predecessors, (26), 9 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-11-21 14:05:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 788 transitions. [2022-11-21 14:05:39,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-21 14:05:39,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:39,708 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:39,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 14:05:39,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:05:39,919 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:39,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1132726379, now seen corresponding path program 1 times [2022-11-21 14:05:39,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:39,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727597218] [2022-11-21 14:05:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:39,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:05:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:40,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:05:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:40,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:05:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:40,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 14:05:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:40,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:05:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:40,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:05:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:40,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 14:05:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:40,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 14:05:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:05:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:40,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 14:05:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:40,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 14:05:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 14:05:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-21 14:05:40,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:40,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727597218] [2022-11-21 14:05:40,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727597218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:40,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:40,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 14:05:40,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550397436] [2022-11-21 14:05:40,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:40,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:05:40,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:40,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:05:40,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:05:40,819 INFO L87 Difference]: Start difference. First operand 518 states and 788 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-21 14:05:41,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:41,033 INFO L93 Difference]: Finished difference Result 962 states and 1525 transitions. [2022-11-21 14:05:41,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:05:41,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 117 [2022-11-21 14:05:41,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:41,037 INFO L225 Difference]: With dead ends: 962 [2022-11-21 14:05:41,038 INFO L226 Difference]: Without dead ends: 491 [2022-11-21 14:05:41,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:05:41,044 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 10 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:41,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 409 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:05:41,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-21 14:05:41,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2022-11-21 14:05:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 309 states have (on average 1.1262135922330097) internal successors, (348), 317 states have internal predecessors, (348), 144 states have call successors, (144), 31 states have call predecessors, (144), 37 states have return successors, (220), 142 states have call predecessors, (220), 138 states have call successors, (220) [2022-11-21 14:05:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 712 transitions. [2022-11-21 14:05:41,148 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 712 transitions. Word has length 117 [2022-11-21 14:05:41,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:41,149 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 712 transitions. [2022-11-21 14:05:41,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-21 14:05:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 712 transitions. [2022-11-21 14:05:41,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-21 14:05:41,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:41,152 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:41,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 14:05:41,152 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:41,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:41,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1230522462, now seen corresponding path program 1 times [2022-11-21 14:05:41,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:41,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812466389] [2022-11-21 14:05:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:41,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:05:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:05:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:05:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 14:05:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:05:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:05:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 14:05:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 14:05:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:05:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 14:05:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 14:05:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 14:05:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-21 14:05:42,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:42,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812466389] [2022-11-21 14:05:42,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812466389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:42,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:42,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 14:05:42,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630214938] [2022-11-21 14:05:42,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:42,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 14:05:42,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:42,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 14:05:42,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-21 14:05:42,900 INFO L87 Difference]: Start difference. First operand 491 states and 712 transitions. Second operand has 13 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-21 14:05:43,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:43,464 INFO L93 Difference]: Finished difference Result 509 states and 749 transitions. [2022-11-21 14:05:43,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 14:05:43,465 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 119 [2022-11-21 14:05:43,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:43,468 INFO L225 Difference]: With dead ends: 509 [2022-11-21 14:05:43,469 INFO L226 Difference]: Without dead ends: 507 [2022-11-21 14:05:43,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2022-11-21 14:05:43,470 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 43 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:43,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1648 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 14:05:43,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-21 14:05:43,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 496. [2022-11-21 14:05:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 312 states have (on average 1.125) internal successors, (351), 320 states have internal predecessors, (351), 145 states have call successors, (145), 32 states have call predecessors, (145), 38 states have return successors, (221), 143 states have call predecessors, (221), 139 states have call successors, (221) [2022-11-21 14:05:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 717 transitions. [2022-11-21 14:05:43,544 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 717 transitions. Word has length 119 [2022-11-21 14:05:43,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:43,544 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 717 transitions. [2022-11-21 14:05:43,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-21 14:05:43,545 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 717 transitions. [2022-11-21 14:05:43,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-21 14:05:43,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:43,547 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-11-21 14:05:43,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 14:05:43,548 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:43,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:43,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2057522489, now seen corresponding path program 1 times [2022-11-21 14:05:43,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:43,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475805692] [2022-11-21 14:05:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:43,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:05:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:05:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:05:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 14:05:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:05:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:05:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 14:05:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 14:05:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:05:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 14:05:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 14:05:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 14:05:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-21 14:05:45,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:45,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475805692] [2022-11-21 14:05:45,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475805692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:05:45,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651308343] [2022-11-21 14:05:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:45,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:05:45,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:05:45,874 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:05:45,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 14:05:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:46,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-21 14:05:46,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:05:47,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-11-21 14:05:47,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-21 14:05:47,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-21 14:05:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-21 14:05:47,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:05:47,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651308343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:47,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:05:47,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 21 [2022-11-21 14:05:47,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861259378] [2022-11-21 14:05:47,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:47,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:05:47,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:05:47,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-11-21 14:05:47,408 INFO L87 Difference]: Start difference. First operand 496 states and 717 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 14:05:49,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:51,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:53,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:56,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:58,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:00,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:02,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:04,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:06,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:08,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:10,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:12,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:14,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:17,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:19,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:21,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:23,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:25,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:25,491 INFO L93 Difference]: Finished difference Result 1170 states and 1737 transitions. [2022-11-21 14:06:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 14:06:25,492 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 120 [2022-11-21 14:06:25,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:25,498 INFO L225 Difference]: With dead ends: 1170 [2022-11-21 14:06:25,498 INFO L226 Difference]: Without dead ends: 727 [2022-11-21 14:06:25,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2022-11-21 14:06:25,502 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 212 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 116 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:25,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 676 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1272 Invalid, 17 Unknown, 0 Unchecked, 36.8s Time] [2022-11-21 14:06:25,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-11-21 14:06:25,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 537. [2022-11-21 14:06:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 343 states have (on average 1.1253644314868805) internal successors, (386), 353 states have internal predecessors, (386), 150 states have call successors, (150), 36 states have call predecessors, (150), 43 states have return successors, (245), 147 states have call predecessors, (245), 142 states have call successors, (245) [2022-11-21 14:06:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 781 transitions. [2022-11-21 14:06:25,603 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 781 transitions. Word has length 120 [2022-11-21 14:06:25,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:25,605 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 781 transitions. [2022-11-21 14:06:25,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 14:06:25,606 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 781 transitions. [2022-11-21 14:06:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-21 14:06:25,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:25,609 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-11-21 14:06:25,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 14:06:25,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:06:25,820 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:25,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:25,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1971232090, now seen corresponding path program 1 times [2022-11-21 14:06:25,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:25,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938008453] [2022-11-21 14:06:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:25,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:27,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:06:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:27,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:06:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:27,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:06:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:28,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 14:06:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:28,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:06:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:28,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:06:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:28,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 14:06:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:28,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 14:06:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:28,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 14:06:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:28,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 14:06:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 14:06:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:28,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 14:06:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:28,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-21 14:06:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-21 14:06:28,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:28,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938008453] [2022-11-21 14:06:28,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938008453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:06:28,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729561645] [2022-11-21 14:06:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:28,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:06:28,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:06:28,188 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:06:28,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 14:06:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:28,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-21 14:06:28,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:28,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 14:06:28,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 14:06:29,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 14:06:29,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 14:06:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-21 14:06:29,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:06:29,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729561645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:29,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:06:29,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 13 [2022-11-21 14:06:29,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837649100] [2022-11-21 14:06:29,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:29,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:06:29,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:29,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:06:29,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-21 14:06:29,044 INFO L87 Difference]: Start difference. First operand 537 states and 781 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-21 14:06:30,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:30,038 INFO L93 Difference]: Finished difference Result 1257 states and 1842 transitions. [2022-11-21 14:06:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 14:06:30,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 127 [2022-11-21 14:06:30,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:30,044 INFO L225 Difference]: With dead ends: 1257 [2022-11-21 14:06:30,044 INFO L226 Difference]: Without dead ends: 749 [2022-11-21 14:06:30,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-21 14:06:30,047 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 156 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:30,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 952 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 14:06:30,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-21 14:06:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 658. [2022-11-21 14:06:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 422 states have (on average 1.1184834123222749) internal successors, (472), 435 states have internal predecessors, (472), 181 states have call successors, (181), 46 states have call predecessors, (181), 54 states have return successors, (291), 176 states have call predecessors, (291), 171 states have call successors, (291) [2022-11-21 14:06:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 944 transitions. [2022-11-21 14:06:30,203 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 944 transitions. Word has length 127 [2022-11-21 14:06:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:30,203 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 944 transitions. [2022-11-21 14:06:30,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-21 14:06:30,203 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 944 transitions. [2022-11-21 14:06:30,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-21 14:06:30,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:30,206 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:30,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 14:06:30,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 14:06:30,416 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:30,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:30,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2134105364, now seen corresponding path program 1 times [2022-11-21 14:06:30,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:30,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008927524] [2022-11-21 14:06:30,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:30,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:06:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:06:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:06:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:06:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:06:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:06:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:06:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:06:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:06:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:06:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:06:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:06:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:06:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:06:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:06:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:06:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 14:06:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-21 14:06:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 14:06:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-11-21 14:06:30,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:30,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008927524] [2022-11-21 14:06:30,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008927524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:06:30,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068409783] [2022-11-21 14:06:30,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:30,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:06:30,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:06:30,966 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:06:30,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 14:06:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:31,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 2735 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 14:06:31,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 94 proven. 84 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-21 14:06:31,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:06:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-11-21 14:06:31,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068409783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:06:31,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:06:31,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-21 14:06:31,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028606999] [2022-11-21 14:06:31,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:06:31,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 14:06:31,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:31,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 14:06:31,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-21 14:06:31,910 INFO L87 Difference]: Start difference. First operand 658 states and 944 transitions. Second operand has 15 states, 12 states have (on average 8.166666666666666) internal successors, (98), 14 states have internal predecessors, (98), 10 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 10 states have call successors, (40) [2022-11-21 14:06:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:32,741 INFO L93 Difference]: Finished difference Result 1074 states and 1538 transitions. [2022-11-21 14:06:32,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:06:32,742 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 8.166666666666666) internal successors, (98), 14 states have internal predecessors, (98), 10 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 10 states have call successors, (40) Word has length 139 [2022-11-21 14:06:32,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:32,746 INFO L225 Difference]: With dead ends: 1074 [2022-11-21 14:06:32,746 INFO L226 Difference]: Without dead ends: 661 [2022-11-21 14:06:32,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 307 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-11-21 14:06:32,749 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 243 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:32,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 355 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 14:06:32,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-11-21 14:06:32,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 658. [2022-11-21 14:06:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 422 states have (on average 1.1184834123222749) internal successors, (472), 435 states have internal predecessors, (472), 181 states have call successors, (181), 46 states have call predecessors, (181), 54 states have return successors, (277), 176 states have call predecessors, (277), 171 states have call successors, (277) [2022-11-21 14:06:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 930 transitions. [2022-11-21 14:06:32,879 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 930 transitions. Word has length 139 [2022-11-21 14:06:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:32,882 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 930 transitions. [2022-11-21 14:06:32,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 8.166666666666666) internal successors, (98), 14 states have internal predecessors, (98), 10 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 10 states have call successors, (40) [2022-11-21 14:06:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 930 transitions. [2022-11-21 14:06:32,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-21 14:06:32,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:32,889 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-11-21 14:06:32,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 14:06:33,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:06:33,099 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:33,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:33,099 INFO L85 PathProgramCache]: Analyzing trace with hash -32643708, now seen corresponding path program 1 times [2022-11-21 14:06:33,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:33,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24482449] [2022-11-21 14:06:33,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:33,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:06:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:06:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 14:06:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:06:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:06:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 14:06:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:06:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:06:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 14:06:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:06:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 14:06:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 14:06:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 14:06:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 14:06:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:06:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-21 14:06:36,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:36,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24482449] [2022-11-21 14:06:36,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24482449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:06:36,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464585690] [2022-11-21 14:06:36,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:36,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:06:36,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:06:36,870 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:06:36,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 14:06:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:37,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 2791 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-21 14:06:37,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:37,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:06:42,079 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:06:42,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-21 14:06:42,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-21 14:06:42,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:06:42,170 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-21 14:06:42,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29 [2022-11-21 14:06:42,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 14:06:56,019 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:06:56,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 30 [2022-11-21 14:06:56,048 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:06:56,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2022-11-21 14:06:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 63 proven. 88 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-21 14:06:57,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:06:58,592 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-21 14:06:58,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-21 14:07:03,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464585690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:07:03,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:07:03,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 31] total 49 [2022-11-21 14:07:03,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895409691] [2022-11-21 14:07:03,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:07:03,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-21 14:07:03,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:07:03,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-21 14:07:03,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=3158, Unknown=7, NotChecked=0, Total=3422 [2022-11-21 14:07:03,010 INFO L87 Difference]: Start difference. First operand 658 states and 930 transitions. Second operand has 49 states, 48 states have (on average 2.9791666666666665) internal successors, (143), 43 states have internal predecessors, (143), 20 states have call successors, (33), 8 states have call predecessors, (33), 8 states have return successors, (30), 19 states have call predecessors, (30), 19 states have call successors, (30) [2022-11-21 14:07:05,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:08,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:10,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:18,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:21,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:26,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:28,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:31,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:34,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:37,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:39,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:42,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:46,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:48,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:50,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:52,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:54,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:58,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:01,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:04,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:08:04,780 INFO L93 Difference]: Finished difference Result 1613 states and 2193 transitions. [2022-11-21 14:08:04,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-11-21 14:08:04,780 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.9791666666666665) internal successors, (143), 43 states have internal predecessors, (143), 20 states have call successors, (33), 8 states have call predecessors, (33), 8 states have return successors, (30), 19 states have call predecessors, (30), 19 states have call successors, (30) Word has length 138 [2022-11-21 14:08:04,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:08:04,790 INFO L225 Difference]: With dead ends: 1613 [2022-11-21 14:08:04,790 INFO L226 Difference]: Without dead ends: 1366 [2022-11-21 14:08:04,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 168 SyntacticMatches, 14 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8147 ImplicationChecksByTransitivity, 36.4s TimeCoverageRelationStatistics Valid=2410, Invalid=21763, Unknown=7, NotChecked=0, Total=24180 [2022-11-21 14:08:04,797 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 947 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 7397 mSolverCounterSat, 921 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 8337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 921 IncrementalHoareTripleChecker+Valid, 7397 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:08:04,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1270 Invalid, 8337 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [921 Valid, 7397 Invalid, 19 Unknown, 0 Unchecked, 49.1s Time] [2022-11-21 14:08:04,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2022-11-21 14:08:05,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1063. [2022-11-21 14:08:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 699 states have (on average 1.1273247496423462) internal successors, (788), 724 states have internal predecessors, (788), 271 states have call successors, (271), 76 states have call predecessors, (271), 92 states have return successors, (435), 262 states have call predecessors, (435), 251 states have call successors, (435) [2022-11-21 14:08:05,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1494 transitions. [2022-11-21 14:08:05,017 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1494 transitions. Word has length 138 [2022-11-21 14:08:05,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:08:05,018 INFO L495 AbstractCegarLoop]: Abstraction has 1063 states and 1494 transitions. [2022-11-21 14:08:05,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.9791666666666665) internal successors, (143), 43 states have internal predecessors, (143), 20 states have call successors, (33), 8 states have call predecessors, (33), 8 states have return successors, (30), 19 states have call predecessors, (30), 19 states have call successors, (30) [2022-11-21 14:08:05,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1494 transitions. [2022-11-21 14:08:05,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-21 14:08:05,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:08:05,022 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 3, 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] [2022-11-21 14:08:05,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 14:08:05,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:08:05,233 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:08:05,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:08:05,233 INFO L85 PathProgramCache]: Analyzing trace with hash 121582132, now seen corresponding path program 1 times [2022-11-21 14:08:05,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:08:05,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403155311] [2022-11-21 14:08:05,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:05,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:08:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:08:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:08:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:08:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:08:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:08:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:08:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:08:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:08:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:08:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:08:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:08:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:08:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:08:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:08:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:08:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:08:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:08:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-11-21 14:08:05,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:08:05,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403155311] [2022-11-21 14:08:05,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403155311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:08:05,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:08:05,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 14:08:05,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217000573] [2022-11-21 14:08:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:08:05,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:08:05,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:08:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:08:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:08:05,944 INFO L87 Difference]: Start difference. First operand 1063 states and 1494 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-21 14:08:06,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:08:06,797 INFO L93 Difference]: Finished difference Result 1107 states and 1546 transitions. [2022-11-21 14:08:06,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:08:06,798 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (20), 3 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 143 [2022-11-21 14:08:06,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:08:06,804 INFO L225 Difference]: With dead ends: 1107 [2022-11-21 14:08:06,804 INFO L226 Difference]: Without dead ends: 1105 [2022-11-21 14:08:06,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:08:06,806 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 54 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:08:06,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 628 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 14:08:06,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-11-21 14:08:07,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1090. [2022-11-21 14:08:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 714 states have (on average 1.1246498599439776) internal successors, (803), 739 states have internal predecessors, (803), 278 states have call successors, (278), 81 states have call predecessors, (278), 97 states have return successors, (442), 269 states have call predecessors, (442), 258 states have call successors, (442) [2022-11-21 14:08:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1523 transitions. [2022-11-21 14:08:07,051 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1523 transitions. Word has length 143 [2022-11-21 14:08:07,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:08:07,051 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1523 transitions. [2022-11-21 14:08:07,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-21 14:08:07,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1523 transitions. [2022-11-21 14:08:07,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-21 14:08:07,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:08:07,054 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 3, 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] [2022-11-21 14:08:07,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 14:08:07,055 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:08:07,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:08:07,055 INFO L85 PathProgramCache]: Analyzing trace with hash 386312444, now seen corresponding path program 1 times [2022-11-21 14:08:07,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:08:07,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800437151] [2022-11-21 14:08:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:07,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:08:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:08:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:08:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:08:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:08:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:08:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:08:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:08:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:08:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:08:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:08:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:08:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:08:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:08:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:08:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:08:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:08:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:08:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-11-21 14:08:08,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:08:08,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800437151] [2022-11-21 14:08:08,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800437151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:08:08,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:08:08,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 14:08:08,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486016863] [2022-11-21 14:08:08,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:08:08,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:08:08,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:08:08,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:08:08,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:08:08,704 INFO L87 Difference]: Start difference. First operand 1090 states and 1523 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-21 14:08:10,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:08:10,600 INFO L93 Difference]: Finished difference Result 1638 states and 2266 transitions. [2022-11-21 14:08:10,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 14:08:10,601 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) Word has length 147 [2022-11-21 14:08:10,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:08:10,609 INFO L225 Difference]: With dead ends: 1638 [2022-11-21 14:08:10,609 INFO L226 Difference]: Without dead ends: 1037 [2022-11-21 14:08:10,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-21 14:08:10,615 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 95 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:08:10,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 629 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 14:08:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-11-21 14:08:10,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1021. [2022-11-21 14:08:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 676 states have (on average 1.1227810650887573) internal successors, (759), 699 states have internal predecessors, (759), 253 states have call successors, (253), 77 states have call predecessors, (253), 91 states have return successors, (378), 244 states have call predecessors, (378), 235 states have call successors, (378) [2022-11-21 14:08:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1390 transitions. [2022-11-21 14:08:10,807 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1390 transitions. Word has length 147 [2022-11-21 14:08:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:08:10,808 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1390 transitions. [2022-11-21 14:08:10,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-21 14:08:10,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1390 transitions. [2022-11-21 14:08:10,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-21 14:08:10,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:08:10,811 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:08:10,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 14:08:10,811 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:08:10,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:08:10,812 INFO L85 PathProgramCache]: Analyzing trace with hash 542080828, now seen corresponding path program 1 times [2022-11-21 14:08:10,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:08:10,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567627480] [2022-11-21 14:08:10,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:10,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:08:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:10,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:08:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:10,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:08:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:10,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:08:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:10,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:08:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:08:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:08:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:08:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:08:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:08:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:08:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:08:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:08:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:08:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:08:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:08:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:08:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-21 14:08:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-21 14:08:11,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:08:11,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567627480] [2022-11-21 14:08:11,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567627480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:08:11,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:08:11,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 14:08:11,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780942612] [2022-11-21 14:08:11,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:08:11,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:08:11,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:08:11,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:08:11,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:08:11,090 INFO L87 Difference]: Start difference. First operand 1021 states and 1390 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-21 14:08:11,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:08:11,627 INFO L93 Difference]: Finished difference Result 1218 states and 1668 transitions. [2022-11-21 14:08:11,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:08:11,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 150 [2022-11-21 14:08:11,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:08:11,633 INFO L225 Difference]: With dead ends: 1218 [2022-11-21 14:08:11,633 INFO L226 Difference]: Without dead ends: 1031 [2022-11-21 14:08:11,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:08:11,635 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 35 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:08:11,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 210 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 14:08:11,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-21 14:08:11,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2022-11-21 14:08:11,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 686 states have (on average 1.120991253644315) internal successors, (769), 709 states have internal predecessors, (769), 253 states have call successors, (253), 77 states have call predecessors, (253), 91 states have return successors, (378), 244 states have call predecessors, (378), 235 states have call successors, (378) [2022-11-21 14:08:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1400 transitions. [2022-11-21 14:08:11,843 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1400 transitions. Word has length 150 [2022-11-21 14:08:11,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:08:11,844 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1400 transitions. [2022-11-21 14:08:11,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-21 14:08:11,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1400 transitions. [2022-11-21 14:08:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-21 14:08:11,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:08:11,847 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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] [2022-11-21 14:08:11,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 14:08:11,847 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:08:11,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:08:11,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1517452615, now seen corresponding path program 1 times [2022-11-21 14:08:11,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:08:11,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535342702] [2022-11-21 14:08:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:11,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:08:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:12,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:08:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:12,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:12,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 14:08:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:12,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:08:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:12,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:08:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:12,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 14:08:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:12,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:08:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:12,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:08:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:12,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 14:08:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:12,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:08:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:12,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 14:08:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 14:08:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:13,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 14:08:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:13,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 14:08:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:13,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-21 14:08:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:13,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 14:08:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:13,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-21 14:08:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 38 proven. 21 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-21 14:08:13,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:08:13,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535342702] [2022-11-21 14:08:13,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535342702] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:08:13,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457947330] [2022-11-21 14:08:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:13,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:08:13,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:08:13,182 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:08:13,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 14:08:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:13,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 2788 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-21 14:08:13,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:08:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 145 proven. 17 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-21 14:08:14,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:08:15,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 18 [2022-11-21 14:08:15,456 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-21 14:08:15,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 25 [2022-11-21 14:08:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 26 proven. 34 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-21 14:08:15,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457947330] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:08:15,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:08:15,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 20 [2022-11-21 14:08:15,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441840668] [2022-11-21 14:08:15,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:08:15,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 14:08:15,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:08:15,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 14:08:15,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-21 14:08:15,523 INFO L87 Difference]: Start difference. First operand 1031 states and 1400 transitions. Second operand has 20 states, 20 states have (on average 6.15) internal successors, (123), 18 states have internal predecessors, (123), 4 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-11-21 14:08:17,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:20,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:22,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:24,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:27,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:29,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:31,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:33,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:36,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:38,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:40,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:43,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:45,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:47,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:48,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:08:48,808 INFO L93 Difference]: Finished difference Result 2193 states and 3104 transitions. [2022-11-21 14:08:48,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 14:08:48,809 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.15) internal successors, (123), 18 states have internal predecessors, (123), 4 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 149 [2022-11-21 14:08:48,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:08:48,815 INFO L225 Difference]: With dead ends: 2193 [2022-11-21 14:08:48,815 INFO L226 Difference]: Without dead ends: 1274 [2022-11-21 14:08:48,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 310 SyntacticMatches, 17 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2022-11-21 14:08:48,821 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 238 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 2830 mSolverCounterSat, 121 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2830 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:08:48,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 738 Invalid, 2965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2830 Invalid, 14 Unknown, 0 Unchecked, 32.2s Time] [2022-11-21 14:08:48,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-11-21 14:08:49,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1178. [2022-11-21 14:08:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 784 states have (on average 1.1058673469387754) internal successors, (867), 807 states have internal predecessors, (867), 278 states have call successors, (278), 102 states have call predecessors, (278), 115 states have return successors, (430), 268 states have call predecessors, (430), 256 states have call successors, (430) [2022-11-21 14:08:49,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1575 transitions. [2022-11-21 14:08:49,105 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1575 transitions. Word has length 149 [2022-11-21 14:08:49,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:08:49,105 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1575 transitions. [2022-11-21 14:08:49,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.15) internal successors, (123), 18 states have internal predecessors, (123), 4 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-11-21 14:08:49,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1575 transitions. [2022-11-21 14:08:49,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-21 14:08:49,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:08:49,108 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:08:49,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 14:08:49,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:08:49,319 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:08:49,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:08:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1095383274, now seen corresponding path program 1 times [2022-11-21 14:08:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:08:49,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688437648] [2022-11-21 14:08:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:49,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:08:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:08:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:08:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:08:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:08:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:08:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:08:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:08:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:08:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:08:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:08:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:08:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:08:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:08:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:08:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:08:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:08:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:08:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:08:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 14:08:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-11-21 14:08:49,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:08:49,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688437648] [2022-11-21 14:08:49,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688437648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:08:49,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:08:49,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:08:49,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436198277] [2022-11-21 14:08:49,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:08:49,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:08:49,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:08:49,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:08:49,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:08:49,768 INFO L87 Difference]: Start difference. First operand 1178 states and 1575 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 14:08:50,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:08:50,404 INFO L93 Difference]: Finished difference Result 1805 states and 2394 transitions. [2022-11-21 14:08:50,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:08:50,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 155 [2022-11-21 14:08:50,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:08:50,411 INFO L225 Difference]: With dead ends: 1805 [2022-11-21 14:08:50,411 INFO L226 Difference]: Without dead ends: 1181 [2022-11-21 14:08:50,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:08:50,415 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 50 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:08:50,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 270 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 14:08:50,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-11-21 14:08:50,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1178. [2022-11-21 14:08:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 784 states have (on average 1.1058673469387754) internal successors, (867), 807 states have internal predecessors, (867), 278 states have call successors, (278), 102 states have call predecessors, (278), 115 states have return successors, (419), 268 states have call predecessors, (419), 256 states have call successors, (419) [2022-11-21 14:08:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1564 transitions. [2022-11-21 14:08:50,721 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1564 transitions. Word has length 155 [2022-11-21 14:08:50,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:08:50,721 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1564 transitions. [2022-11-21 14:08:50,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 14:08:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1564 transitions. [2022-11-21 14:08:50,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-21 14:08:50,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:08:50,724 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:08:50,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 14:08:50,725 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:08:50,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:08:50,725 INFO L85 PathProgramCache]: Analyzing trace with hash -38056338, now seen corresponding path program 1 times [2022-11-21 14:08:50,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:08:50,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233810086] [2022-11-21 14:08:50,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:50,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:08:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:08:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:08:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:08:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:08:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:08:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:08:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:08:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:08:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:08:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:08:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:08:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:08:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:08:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:08:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:08:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:08:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 14:08:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-21 14:08:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-21 14:08:51,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:08:51,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233810086] [2022-11-21 14:08:51,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233810086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:08:51,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:08:51,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 14:08:51,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751475850] [2022-11-21 14:08:51,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:08:51,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:08:51,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:08:51,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:08:51,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:08:51,993 INFO L87 Difference]: Start difference. First operand 1178 states and 1564 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-21 14:08:53,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:08:53,227 INFO L93 Difference]: Finished difference Result 1715 states and 2292 transitions. [2022-11-21 14:08:53,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 14:08:53,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 156 [2022-11-21 14:08:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:08:53,234 INFO L225 Difference]: With dead ends: 1715 [2022-11-21 14:08:53,235 INFO L226 Difference]: Without dead ends: 1157 [2022-11-21 14:08:53,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:08:53,238 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 55 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:08:53,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 604 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 14:08:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-11-21 14:08:53,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1150. [2022-11-21 14:08:53,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 764 states have (on average 1.0981675392670156) internal successors, (839), 787 states have internal predecessors, (839), 274 states have call successors, (274), 98 states have call predecessors, (274), 111 states have return successors, (415), 264 states have call predecessors, (415), 252 states have call successors, (415) [2022-11-21 14:08:53,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1528 transitions. [2022-11-21 14:08:53,486 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1528 transitions. Word has length 156 [2022-11-21 14:08:53,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:08:53,487 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1528 transitions. [2022-11-21 14:08:53,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-21 14:08:53,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1528 transitions. [2022-11-21 14:08:53,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-21 14:08:53,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:08:53,489 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:08:53,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 14:08:53,490 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:08:53,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:08:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash -23336005, now seen corresponding path program 1 times [2022-11-21 14:08:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:08:53,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621315532] [2022-11-21 14:08:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:53,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:08:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:08:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:08:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:08:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:08:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:08:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:08:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:08:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:08:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:08:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:08:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:08:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:08:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:08:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:08:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:08:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:08:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:08:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:08:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 14:08:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-11-21 14:08:54,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:08:54,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621315532] [2022-11-21 14:08:54,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621315532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:08:54,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:08:54,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 14:08:54,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153082204] [2022-11-21 14:08:54,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:08:54,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:08:54,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:08:54,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:08:54,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:08:54,222 INFO L87 Difference]: Start difference. First operand 1150 states and 1528 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-21 14:08:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:08:55,087 INFO L93 Difference]: Finished difference Result 1200 states and 1583 transitions. [2022-11-21 14:08:55,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:08:55,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 157 [2022-11-21 14:08:55,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:08:55,095 INFO L225 Difference]: With dead ends: 1200 [2022-11-21 14:08:55,095 INFO L226 Difference]: Without dead ends: 1198 [2022-11-21 14:08:55,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:08:55,097 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 52 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:08:55,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 638 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 14:08:55,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-11-21 14:08:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1186. [2022-11-21 14:08:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 788 states have (on average 1.0951776649746192) internal successors, (863), 811 states have internal predecessors, (863), 278 states have call successors, (278), 106 states have call predecessors, (278), 119 states have return successors, (419), 268 states have call predecessors, (419), 256 states have call successors, (419) [2022-11-21 14:08:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1560 transitions. [2022-11-21 14:08:55,338 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1560 transitions. Word has length 157 [2022-11-21 14:08:55,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:08:55,339 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1560 transitions. [2022-11-21 14:08:55,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-21 14:08:55,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1560 transitions. [2022-11-21 14:08:55,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-21 14:08:55,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:08:55,342 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2022-11-21 14:08:55,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 14:08:55,342 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:08:55,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:08:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1886376426, now seen corresponding path program 1 times [2022-11-21 14:08:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:08:55,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069376416] [2022-11-21 14:08:55,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:55,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:08:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:08:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:08:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 14:08:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:08:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:08:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 14:08:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:08:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:08:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 14:08:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:08:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 14:08:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 14:08:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 14:08:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 14:08:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-21 14:08:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-21 14:08:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:08:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-11-21 14:08:58,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:08:58,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069376416] [2022-11-21 14:08:58,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069376416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:08:58,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:08:58,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 14:08:58,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480895869] [2022-11-21 14:08:58,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:08:58,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 14:08:58,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:08:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 14:08:58,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-11-21 14:08:58,596 INFO L87 Difference]: Start difference. First operand 1186 states and 1560 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 18 states have internal predecessors, (62), 10 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-21 14:09:01,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:09:01,564 INFO L93 Difference]: Finished difference Result 1675 states and 2227 transitions. [2022-11-21 14:09:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 14:09:01,565 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 18 states have internal predecessors, (62), 10 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) Word has length 155 [2022-11-21 14:09:01,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:09:01,571 INFO L225 Difference]: With dead ends: 1675 [2022-11-21 14:09:01,571 INFO L226 Difference]: Without dead ends: 1202 [2022-11-21 14:09:01,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 14:09:01,574 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 162 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 2788 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:09:01,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 823 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2788 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 14:09:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-11-21 14:09:01,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1186. [2022-11-21 14:09:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 788 states have (on average 1.0951776649746192) internal successors, (863), 811 states have internal predecessors, (863), 278 states have call successors, (278), 106 states have call predecessors, (278), 119 states have return successors, (416), 268 states have call predecessors, (416), 256 states have call successors, (416) [2022-11-21 14:09:01,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1557 transitions. [2022-11-21 14:09:01,846 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1557 transitions. Word has length 155 [2022-11-21 14:09:01,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:09:01,847 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1557 transitions. [2022-11-21 14:09:01,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 18 states have internal predecessors, (62), 10 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-21 14:09:01,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1557 transitions. [2022-11-21 14:09:01,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-21 14:09:01,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:09:01,850 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-21 14:09:01,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-21 14:09:01,850 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:09:01,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:09:01,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1849535011, now seen corresponding path program 1 times [2022-11-21 14:09:01,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:09:01,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108225574] [2022-11-21 14:09:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:09:01,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:09:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:09:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 14:09:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:09:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 14:09:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:09:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:09:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 14:09:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:09:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 14:09:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 14:09:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 14:09:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 14:09:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-21 14:09:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-21 14:09:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:02,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:09:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-11-21 14:09:03,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:09:03,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108225574] [2022-11-21 14:09:03,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108225574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:09:03,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:09:03,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-21 14:09:03,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306005128] [2022-11-21 14:09:03,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:09:03,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 14:09:03,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:09:03,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 14:09:03,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:09:03,200 INFO L87 Difference]: Start difference. First operand 1186 states and 1557 transitions. Second operand has 14 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-21 14:09:04,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:09:04,580 INFO L93 Difference]: Finished difference Result 1210 states and 1582 transitions. [2022-11-21 14:09:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:09:04,580 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 157 [2022-11-21 14:09:04,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:09:04,587 INFO L225 Difference]: With dead ends: 1210 [2022-11-21 14:09:04,588 INFO L226 Difference]: Without dead ends: 1208 [2022-11-21 14:09:04,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-11-21 14:09:04,602 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 84 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:09:04,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 973 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 14:09:04,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2022-11-21 14:09:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1194. [2022-11-21 14:09:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 794 states have (on average 1.0944584382871536) internal successors, (869), 817 states have internal predecessors, (869), 278 states have call successors, (278), 108 states have call predecessors, (278), 121 states have return successors, (416), 268 states have call predecessors, (416), 256 states have call successors, (416) [2022-11-21 14:09:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1563 transitions. [2022-11-21 14:09:04,922 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1563 transitions. Word has length 157 [2022-11-21 14:09:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:09:04,923 INFO L495 AbstractCegarLoop]: Abstraction has 1194 states and 1563 transitions. [2022-11-21 14:09:04,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-21 14:09:04,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1563 transitions. [2022-11-21 14:09:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-21 14:09:04,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:09:04,927 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:09:04,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-21 14:09:04,928 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:09:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:09:04,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1181812483, now seen corresponding path program 1 times [2022-11-21 14:09:04,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:09:04,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41591373] [2022-11-21 14:09:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:09:04,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:09:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:09:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:09:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:09:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:09:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:09:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:09:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:09:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:09:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:09:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:09:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:09:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:09:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:09:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:09:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:09:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:09:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:09:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 14:09:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-11-21 14:09:06,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:09:06,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41591373] [2022-11-21 14:09:06,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41591373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:09:06,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:09:06,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 14:09:06,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26437621] [2022-11-21 14:09:06,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:09:06,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 14:09:06,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:09:06,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 14:09:06,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-21 14:09:06,949 INFO L87 Difference]: Start difference. First operand 1194 states and 1563 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 6 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-21 14:09:09,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:09:09,123 INFO L93 Difference]: Finished difference Result 1384 states and 1797 transitions. [2022-11-21 14:09:09,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 14:09:09,124 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 6 states have call predecessors, (21), 4 states have call successors, (21) Word has length 161 [2022-11-21 14:09:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:09:09,129 INFO L225 Difference]: With dead ends: 1384 [2022-11-21 14:09:09,129 INFO L226 Difference]: Without dead ends: 1185 [2022-11-21 14:09:09,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-21 14:09:09,131 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 92 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:09:09,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 709 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 14:09:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2022-11-21 14:09:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1169. [2022-11-21 14:09:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 779 states have (on average 1.0962772785622592) internal successors, (854), 803 states have internal predecessors, (854), 269 states have call successors, (269), 106 states have call predecessors, (269), 120 states have return successors, (393), 259 states have call predecessors, (393), 247 states have call successors, (393) [2022-11-21 14:09:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1516 transitions. [2022-11-21 14:09:09,348 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1516 transitions. Word has length 161 [2022-11-21 14:09:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:09:09,348 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 1516 transitions. [2022-11-21 14:09:09,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 6 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-21 14:09:09,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1516 transitions. [2022-11-21 14:09:09,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-21 14:09:09,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:09:09,351 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:09:09,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-21 14:09:09,352 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:09:09,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:09:09,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1756330511, now seen corresponding path program 1 times [2022-11-21 14:09:09,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:09:09,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353793861] [2022-11-21 14:09:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:09:09,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:09:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:09,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:09:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:09,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:09,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:09:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:09:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:09,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:09:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:09,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:09:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:09,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:09:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:09,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:09:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:09,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:09,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:09:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:09:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:09:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:09:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:09:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:09:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:09:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:09:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:09:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:09:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 14:09:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 14:09:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 14:09:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:10,126 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-11-21 14:09:10,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:09:10,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353793861] [2022-11-21 14:09:10,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353793861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:09:10,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:09:10,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 14:09:10,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564931041] [2022-11-21 14:09:10,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:09:10,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:09:10,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:09:10,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:09:10,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:09:10,129 INFO L87 Difference]: Start difference. First operand 1169 states and 1516 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-21 14:09:11,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:09:11,167 INFO L93 Difference]: Finished difference Result 1217 states and 1568 transitions. [2022-11-21 14:09:11,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:09:11,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 172 [2022-11-21 14:09:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:09:11,173 INFO L225 Difference]: With dead ends: 1217 [2022-11-21 14:09:11,173 INFO L226 Difference]: Without dead ends: 1215 [2022-11-21 14:09:11,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:09:11,177 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 52 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:09:11,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 627 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 14:09:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-11-21 14:09:11,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1204. [2022-11-21 14:09:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 803 states have (on average 1.0933997509339974) internal successors, (878), 827 states have internal predecessors, (878), 272 states have call successors, (272), 114 states have call predecessors, (272), 128 states have return successors, (396), 262 states have call predecessors, (396), 250 states have call successors, (396) [2022-11-21 14:09:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1546 transitions. [2022-11-21 14:09:11,423 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1546 transitions. Word has length 172 [2022-11-21 14:09:11,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:09:11,424 INFO L495 AbstractCegarLoop]: Abstraction has 1204 states and 1546 transitions. [2022-11-21 14:09:11,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-21 14:09:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1546 transitions. [2022-11-21 14:09:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-21 14:09:11,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:09:11,427 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 8, 8, 8, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:09:11,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-21 14:09:11,427 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:09:11,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:09:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash -695136181, now seen corresponding path program 1 times [2022-11-21 14:09:11,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:09:11,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223643656] [2022-11-21 14:09:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:09:11,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:09:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:09:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:09:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:09:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:09:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:09:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:09:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:09:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:09:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:09:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:09:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:09:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:09:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:09:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:09:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:09:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:09:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:09:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 14:09:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 14:09:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 14:09:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-21 14:09:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-21 14:09:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2022-11-21 14:09:11,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:09:11,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223643656] [2022-11-21 14:09:11,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223643656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:09:11,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:09:11,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:09:11,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777899280] [2022-11-21 14:09:11,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:09:11,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:09:11,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:09:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:09:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:09:11,909 INFO L87 Difference]: Start difference. First operand 1204 states and 1546 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-21 14:09:12,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:09:12,611 INFO L93 Difference]: Finished difference Result 1670 states and 2113 transitions. [2022-11-21 14:09:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:09:12,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 184 [2022-11-21 14:09:12,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:09:12,618 INFO L225 Difference]: With dead ends: 1670 [2022-11-21 14:09:12,618 INFO L226 Difference]: Without dead ends: 1198 [2022-11-21 14:09:12,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:09:12,620 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 50 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:09:12,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 270 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 14:09:12,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-11-21 14:09:12,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1195. [2022-11-21 14:09:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 797 states have (on average 1.0903387703889587) internal successors, (869), 818 states have internal predecessors, (869), 272 states have call successors, (272), 114 states have call predecessors, (272), 125 states have return successors, (385), 262 states have call predecessors, (385), 250 states have call successors, (385) [2022-11-21 14:09:12,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1526 transitions. [2022-11-21 14:09:12,830 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1526 transitions. Word has length 184 [2022-11-21 14:09:12,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:09:12,831 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1526 transitions. [2022-11-21 14:09:12,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-21 14:09:12,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1526 transitions. [2022-11-21 14:09:12,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-21 14:09:12,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:09:12,834 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 8, 8, 8, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:09:12,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-21 14:09:12,835 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:09:12,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:09:12,835 INFO L85 PathProgramCache]: Analyzing trace with hash -664437840, now seen corresponding path program 1 times [2022-11-21 14:09:12,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:09:12,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729358013] [2022-11-21 14:09:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:09:12,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:09:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:09:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:09:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:09:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:09:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:09:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:09:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:09:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:09:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:09:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:09:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:09:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:09:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:09:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:09:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:09:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:09:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:09:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 14:09:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 14:09:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 14:09:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-21 14:09:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-21 14:09:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-11-21 14:09:13,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:09:13,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729358013] [2022-11-21 14:09:13,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729358013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:09:13,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:09:13,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 14:09:13,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629991081] [2022-11-21 14:09:13,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:09:13,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:09:13,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:09:13,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:09:13,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:09:13,540 INFO L87 Difference]: Start difference. First operand 1195 states and 1526 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-21 14:09:14,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:09:14,363 INFO L93 Difference]: Finished difference Result 1237 states and 1573 transitions. [2022-11-21 14:09:14,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:09:14,364 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 186 [2022-11-21 14:09:14,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:09:14,370 INFO L225 Difference]: With dead ends: 1237 [2022-11-21 14:09:14,371 INFO L226 Difference]: Without dead ends: 1235 [2022-11-21 14:09:14,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:09:14,373 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 52 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:09:14,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 626 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 14:09:14,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-11-21 14:09:14,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1227. [2022-11-21 14:09:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 818 states have (on average 1.0843520782396088) internal successors, (887), 840 states have internal predecessors, (887), 276 states have call successors, (276), 120 states have call predecessors, (276), 132 states have return successors, (392), 266 states have call predecessors, (392), 254 states have call successors, (392) [2022-11-21 14:09:14,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1555 transitions. [2022-11-21 14:09:14,657 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1555 transitions. Word has length 186 [2022-11-21 14:09:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:09:14,657 INFO L495 AbstractCegarLoop]: Abstraction has 1227 states and 1555 transitions. [2022-11-21 14:09:14,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-21 14:09:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1555 transitions. [2022-11-21 14:09:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-21 14:09:14,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:09:14,661 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 8, 8, 8, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:09:14,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-21 14:09:14,661 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:09:14,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:09:14,661 INFO L85 PathProgramCache]: Analyzing trace with hash 530519160, now seen corresponding path program 1 times [2022-11-21 14:09:14,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:09:14,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699431605] [2022-11-21 14:09:14,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:09:14,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:09:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:09:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:09:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:09:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:09:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:09:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:09:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:09:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:09:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:09:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:09:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:09:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:09:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:09:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:09:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:09:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:09:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:09:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 14:09:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 14:09:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 14:09:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-21 14:09:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-21 14:09:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:16,132 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2022-11-21 14:09:16,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:09:16,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699431605] [2022-11-21 14:09:16,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699431605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:09:16,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:09:16,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-21 14:09:16,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281406722] [2022-11-21 14:09:16,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:09:16,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 14:09:16,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:09:16,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 14:09:16,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-21 14:09:16,135 INFO L87 Difference]: Start difference. First operand 1227 states and 1555 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 13 states have internal predecessors, (58), 6 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 7 states have call predecessors, (25), 5 states have call successors, (25) [2022-11-21 14:09:18,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:09:18,488 INFO L93 Difference]: Finished difference Result 1388 states and 1742 transitions. [2022-11-21 14:09:18,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:09:18,489 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 13 states have internal predecessors, (58), 6 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 7 states have call predecessors, (25), 5 states have call successors, (25) Word has length 190 [2022-11-21 14:09:18,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:09:18,495 INFO L225 Difference]: With dead ends: 1388 [2022-11-21 14:09:18,495 INFO L226 Difference]: Without dead ends: 1230 [2022-11-21 14:09:18,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-11-21 14:09:18,497 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 80 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:09:18,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 913 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1713 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 14:09:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2022-11-21 14:09:18,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1212. [2022-11-21 14:09:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 810 states have (on average 1.0851851851851853) internal successors, (879), 830 states have internal predecessors, (879), 271 states have call successors, (271), 120 states have call predecessors, (271), 130 states have return successors, (373), 261 states have call predecessors, (373), 249 states have call successors, (373) [2022-11-21 14:09:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1523 transitions. [2022-11-21 14:09:18,691 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1523 transitions. Word has length 190 [2022-11-21 14:09:18,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:09:18,692 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1523 transitions. [2022-11-21 14:09:18,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 13 states have internal predecessors, (58), 6 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 7 states have call predecessors, (25), 5 states have call successors, (25) [2022-11-21 14:09:18,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1523 transitions. [2022-11-21 14:09:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-21 14:09:18,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:09:18,696 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:09:18,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-21 14:09:18,697 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:09:18,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:09:18,698 INFO L85 PathProgramCache]: Analyzing trace with hash 264659881, now seen corresponding path program 1 times [2022-11-21 14:09:18,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:09:18,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136369569] [2022-11-21 14:09:18,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:09:18,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:09:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:09:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 14:09:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:09:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 14:09:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:09:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:09:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 14:09:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:09:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 14:09:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:09:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 14:09:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 14:09:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 14:09:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 14:09:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:09:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 14:09:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-21 14:09:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:09:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-21 14:09:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-21 14:09:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-11-21 14:09:20,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:09:20,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136369569] [2022-11-21 14:09:20,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136369569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:09:20,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367746633] [2022-11-21 14:09:20,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:09:20,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:09:20,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:09:20,568 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:09:20,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 14:09:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:21,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-21 14:09:21,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:09:22,761 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2022-11-21 14:09:22,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 24 [2022-11-21 14:09:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 215 proven. 5 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-21 14:09:22,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:09:23,469 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-21 14:09:23,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 1 [2022-11-21 14:09:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 58 proven. 34 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-21 14:09:23,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367746633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:09:23,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:09:23,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 10] total 22 [2022-11-21 14:09:23,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750552933] [2022-11-21 14:09:23,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:09:23,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 14:09:23,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:09:23,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 14:09:23,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2022-11-21 14:09:23,532 INFO L87 Difference]: Start difference. First operand 1212 states and 1523 transitions. Second operand has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 20 states have internal predecessors, (128), 7 states have call successors, (40), 5 states have call predecessors, (40), 6 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-21 14:09:26,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:28,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:30,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:32,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:35,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:37,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:41,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:43,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:45,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:47,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:49,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:52,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:54,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:56,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:58,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:10:00,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:10:03,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:10:04,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:10:04,010 INFO L93 Difference]: Finished difference Result 1847 states and 2300 transitions. [2022-11-21 14:10:04,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 14:10:04,011 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 20 states have internal predecessors, (128), 7 states have call successors, (40), 5 states have call predecessors, (40), 6 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 195 [2022-11-21 14:10:04,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:10:04,017 INFO L225 Difference]: With dead ends: 1847 [2022-11-21 14:10:04,018 INFO L226 Difference]: Without dead ends: 1361 [2022-11-21 14:10:04,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 421 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=375, Invalid=1872, Unknown=9, NotChecked=0, Total=2256 [2022-11-21 14:10:04,022 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 292 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 131 mSolverCounterUnsat, 49 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 2651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 49 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:10:04,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 669 Invalid, 2651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2471 Invalid, 49 Unknown, 0 Unchecked, 38.6s Time] [2022-11-21 14:10:04,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-11-21 14:10:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1286. [2022-11-21 14:10:04,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 873 states have (on average 1.0836197021764031) internal successors, (946), 896 states have internal predecessors, (946), 273 states have call successors, (273), 130 states have call predecessors, (273), 139 states have return successors, (367), 259 states have call predecessors, (367), 247 states have call successors, (367) [2022-11-21 14:10:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1586 transitions. [2022-11-21 14:10:04,375 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1586 transitions. Word has length 195 [2022-11-21 14:10:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:10:04,375 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 1586 transitions. [2022-11-21 14:10:04,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 20 states have internal predecessors, (128), 7 states have call successors, (40), 5 states have call predecessors, (40), 6 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-21 14:10:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1586 transitions. [2022-11-21 14:10:04,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-21 14:10:04,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:10:04,379 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 8, 8, 8, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:10:04,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 14:10:04,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:10:04,580 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:10:04,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:10:04,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1110193572, now seen corresponding path program 1 times [2022-11-21 14:10:04,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:10:04,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784911282] [2022-11-21 14:10:04,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:10:04,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:10:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:10:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:10:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:10:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:10:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:10:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:10:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:10:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:10:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:10:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:10:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:10:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:10:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:10:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:10:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:10:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:10:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:10:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:10:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:10:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:10:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 14:10:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 14:10:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 14:10:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-21 14:10:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-21 14:10:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-21 14:10:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-21 14:10:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2022-11-21 14:10:05,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:10:05,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784911282] [2022-11-21 14:10:05,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784911282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:10:05,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:10:05,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 14:10:05,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954434648] [2022-11-21 14:10:05,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:10:05,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:10:05,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:10:05,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:10:05,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:10:05,517 INFO L87 Difference]: Start difference. First operand 1286 states and 1586 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-11-21 14:10:06,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:10:06,598 INFO L93 Difference]: Finished difference Result 1318 states and 1619 transitions. [2022-11-21 14:10:06,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:10:06,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 201 [2022-11-21 14:10:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:10:06,605 INFO L225 Difference]: With dead ends: 1318 [2022-11-21 14:10:06,605 INFO L226 Difference]: Without dead ends: 1316 [2022-11-21 14:10:06,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:10:06,608 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 52 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:10:06,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 629 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 14:10:06,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2022-11-21 14:10:06,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1293. [2022-11-21 14:10:06,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 878 states have (on average 1.082004555808656) internal successors, (950), 901 states have internal predecessors, (950), 272 states have call successors, (272), 132 states have call predecessors, (272), 142 states have return successors, (368), 259 states have call predecessors, (368), 248 states have call successors, (368) [2022-11-21 14:10:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1590 transitions. [2022-11-21 14:10:06,879 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1590 transitions. Word has length 201 [2022-11-21 14:10:06,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:10:06,880 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 1590 transitions. [2022-11-21 14:10:06,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-11-21 14:10:06,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1590 transitions. [2022-11-21 14:10:06,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-21 14:10:06,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:10:06,884 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 8, 8, 8, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:10:06,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-21 14:10:06,884 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:10:06,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:10:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash 38923556, now seen corresponding path program 1 times [2022-11-21 14:10:06,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:10:06,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249116358] [2022-11-21 14:10:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:10:06,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:10:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:10:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:10:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:10:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:10:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:10:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:10:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:10:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:10:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:10:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:10:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:10:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:10:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:10:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:10:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:10:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:10:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:10:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:10:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:10:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:10:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 14:10:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 14:10:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 14:10:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-21 14:10:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-21 14:10:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-21 14:10:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:08,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-21 14:10:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2022-11-21 14:10:09,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:10:09,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249116358] [2022-11-21 14:10:09,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249116358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:10:09,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:10:09,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-21 14:10:09,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401866284] [2022-11-21 14:10:09,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:10:09,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 14:10:09,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:10:09,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 14:10:09,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:10:09,042 INFO L87 Difference]: Start difference. First operand 1293 states and 1590 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 7 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2022-11-21 14:10:11,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:10:11,174 INFO L93 Difference]: Finished difference Result 1400 states and 1712 transitions. [2022-11-21 14:10:11,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 14:10:11,174 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 7 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) Word has length 205 [2022-11-21 14:10:11,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:10:11,180 INFO L225 Difference]: With dead ends: 1400 [2022-11-21 14:10:11,180 INFO L226 Difference]: Without dead ends: 1299 [2022-11-21 14:10:11,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-11-21 14:10:11,182 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 117 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:10:11,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 653 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 14:10:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2022-11-21 14:10:11,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1247. [2022-11-21 14:10:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 847 states have (on average 1.0802833530106257) internal successors, (915), 867 states have internal predecessors, (915), 263 states have call successors, (263), 127 states have call predecessors, (263), 136 states have return successors, (353), 252 states have call predecessors, (353), 243 states have call successors, (353) [2022-11-21 14:10:11,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1531 transitions. [2022-11-21 14:10:11,359 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1531 transitions. Word has length 205 [2022-11-21 14:10:11,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:10:11,360 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 1531 transitions. [2022-11-21 14:10:11,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 7 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2022-11-21 14:10:11,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1531 transitions. [2022-11-21 14:10:11,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-21 14:10:11,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:10:11,363 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:10:11,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-21 14:10:11,364 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:10:11,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:10:11,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1724689080, now seen corresponding path program 2 times [2022-11-21 14:10:11,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:10:11,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462314247] [2022-11-21 14:10:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:10:11,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:10:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:10:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:10:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 14:10:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:10:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:10:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 14:10:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:10:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:10:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 14:10:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:10:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 14:10:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:10:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:10:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 14:10:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 14:10:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 14:10:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 14:10:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:10:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 14:10:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-21 14:10:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-21 14:10:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-21 14:10:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-21 14:10:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2022-11-21 14:10:12,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:10:12,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462314247] [2022-11-21 14:10:12,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462314247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:10:12,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:10:12,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 14:10:12,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088447456] [2022-11-21 14:10:12,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:10:12,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 14:10:12,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:10:12,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 14:10:12,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:10:12,806 INFO L87 Difference]: Start difference. First operand 1247 states and 1531 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-21 14:10:14,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:10:14,349 INFO L93 Difference]: Finished difference Result 1574 states and 1957 transitions. [2022-11-21 14:10:14,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 14:10:14,350 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 201 [2022-11-21 14:10:14,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:10:14,353 INFO L225 Difference]: With dead ends: 1574 [2022-11-21 14:10:14,353 INFO L226 Difference]: Without dead ends: 1251 [2022-11-21 14:10:14,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-21 14:10:14,355 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 59 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:10:14,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 636 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 14:10:14,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-11-21 14:10:14,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1243. [2022-11-21 14:10:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 843 states have (on average 1.0759193357058126) internal successors, (907), 863 states have internal predecessors, (907), 263 states have call successors, (263), 127 states have call predecessors, (263), 136 states have return successors, (353), 252 states have call predecessors, (353), 243 states have call successors, (353) [2022-11-21 14:10:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1523 transitions. [2022-11-21 14:10:14,667 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1523 transitions. Word has length 201 [2022-11-21 14:10:14,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:10:14,667 INFO L495 AbstractCegarLoop]: Abstraction has 1243 states and 1523 transitions. [2022-11-21 14:10:14,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-21 14:10:14,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1523 transitions. [2022-11-21 14:10:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-21 14:10:14,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:10:14,671 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:10:14,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-21 14:10:14,671 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:10:14,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:10:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash 964377542, now seen corresponding path program 1 times [2022-11-21 14:10:14,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:10:14,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911063301] [2022-11-21 14:10:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:10:14,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:10:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:10:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:10:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 14:10:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:10:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:10:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 14:10:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:10:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:10:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 14:10:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:10:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 14:10:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:10:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:10:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 14:10:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 14:10:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 14:10:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 14:10:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:10:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 14:10:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-21 14:10:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-21 14:10:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-21 14:10:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-21 14:10:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-21 14:10:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-21 14:10:16,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:10:16,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911063301] [2022-11-21 14:10:16,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911063301] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:10:16,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990537917] [2022-11-21 14:10:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:10:16,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:10:16,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:10:16,979 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:10:16,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 14:10:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:18,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-21 14:10:18,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:10:18,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:10:18,972 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 14:10:18,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 14:10:19,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-21 14:10:19,661 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 14:10:19,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 14:10:19,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-11-21 14:10:23,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-11-21 14:10:48,810 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_cursor_left_trim_pred_~#trimmed~1.base_23| Int) (|ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base| Int) (|v_ULTIMATE.start_aws_byte_cursor_right_trim_pred_~source#1.base_BEFORE_CALL_3| Int) (|v_aws_byte_cursor_left_trim_pred_~#trimmed~1.offset_23| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base|) 8)) (.cse1 (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_left_trim_pred_~#trimmed~1.base_23|) (+ 8 |v_aws_byte_cursor_left_trim_pred_~#trimmed~1.offset_23|)))) (and (not (= .cse0 |ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base|)) (not (= .cse0 0)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_right_trim_pred_~source#1.base_BEFORE_CALL_3|) 8) .cse1) (= .cse0 .cse1)))) is different from true [2022-11-21 14:12:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 116 proven. 186 refuted. 0 times theorem prover too weak. 96 trivial. 21 not checked. [2022-11-21 14:12:33,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:12:34,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990537917] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:12:34,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:12:34,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 28] total 38 [2022-11-21 14:12:34,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684926931] [2022-11-21 14:12:34,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:12:34,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-21 14:12:34,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:12:34,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-21 14:12:34,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1750, Unknown=2, NotChecked=84, Total=1980 [2022-11-21 14:12:34,640 INFO L87 Difference]: Start difference. First operand 1243 states and 1523 transitions. Second operand has 38 states, 36 states have (on average 4.333333333333333) internal successors, (156), 32 states have internal predecessors, (156), 15 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (48), 16 states have call predecessors, (48), 15 states have call successors, (48) [2022-11-21 14:12:38,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:12:42,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:12:48,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:12:50,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:12:52,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:12:57,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:12:59,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:02,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:04,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:06,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:08,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:10,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:12,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:15,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:17,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:19,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:21,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:24,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:26,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:28,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:30,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:34,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:36,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:38,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:59,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:24,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:26,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:28,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:30,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:32,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:34,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:38,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:41,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:43,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:45,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:47,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:49,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:51,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:53,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:55,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:57,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:59,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:01,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:09,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:11,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:13,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:15,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:17,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:31,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:32,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:35,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:37,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:15:37,380 INFO L93 Difference]: Finished difference Result 2129 states and 2529 transitions. [2022-11-21 14:15:37,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-21 14:15:37,381 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 4.333333333333333) internal successors, (156), 32 states have internal predecessors, (156), 15 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (48), 16 states have call predecessors, (48), 15 states have call successors, (48) Word has length 207 [2022-11-21 14:15:37,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:15:37,385 INFO L225 Difference]: With dead ends: 2129 [2022-11-21 14:15:37,385 INFO L226 Difference]: Without dead ends: 1535 [2022-11-21 14:15:37,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 257 SyntacticMatches, 31 SemanticMatches, 105 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3568 ImplicationChecksByTransitivity, 199.4s TimeCoverageRelationStatistics Valid=1103, Invalid=10020, Unknown=11, NotChecked=208, Total=11342 [2022-11-21 14:15:37,390 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 663 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 5559 mSolverCounterSat, 558 mSolverCounterUnsat, 50 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 6591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 5559 IncrementalHoareTripleChecker+Invalid, 50 IncrementalHoareTripleChecker+Unknown, 424 IncrementalHoareTripleChecker+Unchecked, 117.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:15:37,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1052 Invalid, 6591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [558 Valid, 5559 Invalid, 50 Unknown, 424 Unchecked, 117.3s Time] [2022-11-21 14:15:37,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2022-11-21 14:15:37,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1320. [2022-11-21 14:15:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 936 states have (on average 1.0758547008547008) internal successors, (1007), 964 states have internal predecessors, (1007), 229 states have call successors, (229), 134 states have call predecessors, (229), 154 states have return successors, (289), 221 states have call predecessors, (289), 215 states have call successors, (289) [2022-11-21 14:15:37,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1525 transitions. [2022-11-21 14:15:37,616 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1525 transitions. Word has length 207 [2022-11-21 14:15:37,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:15:37,616 INFO L495 AbstractCegarLoop]: Abstraction has 1320 states and 1525 transitions. [2022-11-21 14:15:37,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 4.333333333333333) internal successors, (156), 32 states have internal predecessors, (156), 15 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (48), 16 states have call predecessors, (48), 15 states have call successors, (48) [2022-11-21 14:15:37,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1525 transitions. [2022-11-21 14:15:37,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-21 14:15:37,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:15:37,620 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:15:37,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 14:15:37,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:15:37,835 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:15:37,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:15:37,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1451537710, now seen corresponding path program 1 times [2022-11-21 14:15:37,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:15:37,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092534847] [2022-11-21 14:15:37,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:15:37,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:15:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:15:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:15:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:15:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:15:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:15:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:15:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:15:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:15:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:15:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:15:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:15:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:15:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:15:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:15:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:15:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:15:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:15:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:15:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:15:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:15:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 14:15:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 14:15:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 14:15:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-21 14:15:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-21 14:15:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-21 14:15:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-21 14:15:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-11-21 14:15:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-11-21 14:15:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2022-11-21 14:15:38,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:15:38,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092534847] [2022-11-21 14:15:38,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092534847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:15:38,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:15:38,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:15:38,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137476249] [2022-11-21 14:15:38,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:15:38,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:15:38,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:15:38,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:15:38,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:15:38,410 INFO L87 Difference]: Start difference. First operand 1320 states and 1525 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-21 14:15:39,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:15:39,157 INFO L93 Difference]: Finished difference Result 1411 states and 1622 transitions. [2022-11-21 14:15:39,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:15:39,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 213 [2022-11-21 14:15:39,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:15:39,163 INFO L225 Difference]: With dead ends: 1411 [2022-11-21 14:15:39,163 INFO L226 Difference]: Without dead ends: 1305 [2022-11-21 14:15:39,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:15:39,165 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 52 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:15:39,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 265 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 14:15:39,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2022-11-21 14:15:39,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1305. [2022-11-21 14:15:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 926 states have (on average 1.0669546436285098) internal successors, (988), 949 states have internal predecessors, (988), 229 states have call successors, (229), 134 states have call predecessors, (229), 149 states have return successors, (284), 221 states have call predecessors, (284), 215 states have call successors, (284) [2022-11-21 14:15:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1501 transitions. [2022-11-21 14:15:39,520 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1501 transitions. Word has length 213 [2022-11-21 14:15:39,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:15:39,520 INFO L495 AbstractCegarLoop]: Abstraction has 1305 states and 1501 transitions. [2022-11-21 14:15:39,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-21 14:15:39,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1501 transitions. [2022-11-21 14:15:39,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-21 14:15:39,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:15:39,524 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:15:39,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-21 14:15:39,525 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:15:39,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:15:39,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1973367763, now seen corresponding path program 1 times [2022-11-21 14:15:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:15:39,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406393509] [2022-11-21 14:15:39,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:15:39,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:15:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:15:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:15:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:15:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:15:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:15:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:15:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:15:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:15:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:15:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:15:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:15:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:15:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:15:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:15:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:15:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:15:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:15:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:15:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:15:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:15:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 14:15:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 14:15:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 14:15:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-21 14:15:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-21 14:15:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-21 14:15:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-21 14:15:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-11-21 14:15:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-11-21 14:15:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2022-11-21 14:15:40,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:15:40,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406393509] [2022-11-21 14:15:40,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406393509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:15:40,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:15:40,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 14:15:40,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978029686] [2022-11-21 14:15:40,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:15:40,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:15:40,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:15:40,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:15:40,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:15:40,717 INFO L87 Difference]: Start difference. First operand 1305 states and 1501 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-21 14:15:41,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:15:41,888 INFO L93 Difference]: Finished difference Result 1351 states and 1552 transitions. [2022-11-21 14:15:41,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:15:41,889 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 215 [2022-11-21 14:15:41,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:15:41,892 INFO L225 Difference]: With dead ends: 1351 [2022-11-21 14:15:41,892 INFO L226 Difference]: Without dead ends: 1349 [2022-11-21 14:15:41,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:15:41,893 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 51 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:15:41,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 626 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 14:15:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2022-11-21 14:15:42,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1343. [2022-11-21 14:15:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 950 states have (on average 1.065263157894737) internal successors, (1012), 975 states have internal predecessors, (1012), 235 states have call successors, (235), 140 states have call predecessors, (235), 157 states have return successors, (292), 227 states have call predecessors, (292), 221 states have call successors, (292) [2022-11-21 14:15:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1539 transitions. [2022-11-21 14:15:42,124 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1539 transitions. Word has length 215 [2022-11-21 14:15:42,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:15:42,124 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 1539 transitions. [2022-11-21 14:15:42,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-21 14:15:42,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1539 transitions. [2022-11-21 14:15:42,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-21 14:15:42,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:15:42,128 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:15:42,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-21 14:15:42,128 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:15:42,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:15:42,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1050745215, now seen corresponding path program 1 times [2022-11-21 14:15:42,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:15:42,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814983712] [2022-11-21 14:15:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:15:42,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:15:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:15:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:15:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 14:15:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:15:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:15:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 14:15:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:15:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:15:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 14:15:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:15:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 14:15:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:15:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:15:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 14:15:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 14:15:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:15:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:15:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:15:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 14:15:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 14:15:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-21 14:15:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-21 14:15:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-21 14:15:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-21 14:15:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-11-21 14:15:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-21 14:15:43,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:15:43,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814983712] [2022-11-21 14:15:43,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814983712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:15:43,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5495676] [2022-11-21 14:15:43,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:15:43,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:15:43,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:15:43,441 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:15:43,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 14:15:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:44,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 14:15:44,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:15:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-11-21 14:15:44,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:15:44,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5495676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:15:44,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:15:44,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-11-21 14:15:44,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503009065] [2022-11-21 14:15:44,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:15:44,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:15:44,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:15:44,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:15:44,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:15:44,213 INFO L87 Difference]: Start difference. First operand 1343 states and 1539 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-21 14:15:44,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:15:44,747 INFO L93 Difference]: Finished difference Result 1843 states and 2138 transitions. [2022-11-21 14:15:44,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:15:44,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 214 [2022-11-21 14:15:44,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:15:44,751 INFO L225 Difference]: With dead ends: 1843 [2022-11-21 14:15:44,751 INFO L226 Difference]: Without dead ends: 1373 [2022-11-21 14:15:44,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-21 14:15:44,753 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 11 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:15:44,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1118 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 14:15:44,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2022-11-21 14:15:45,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1343. [2022-11-21 14:15:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 950 states have (on average 1.065263157894737) internal successors, (1012), 975 states have internal predecessors, (1012), 235 states have call successors, (235), 140 states have call predecessors, (235), 157 states have return successors, (290), 227 states have call predecessors, (290), 221 states have call successors, (290) [2022-11-21 14:15:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1537 transitions. [2022-11-21 14:15:45,034 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1537 transitions. Word has length 214 [2022-11-21 14:15:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:15:45,035 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 1537 transitions. [2022-11-21 14:15:45,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-21 14:15:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1537 transitions. [2022-11-21 14:15:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-21 14:15:45,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:15:45,038 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:15:45,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-21 14:15:45,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:15:45,239 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:15:45,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:15:45,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1166965989, now seen corresponding path program 1 times [2022-11-21 14:15:45,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:15:45,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367788777] [2022-11-21 14:15:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:15:45,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:15:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:15:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:46,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:15:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:46,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 14:15:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:46,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:15:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:46,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:15:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 14:15:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:15:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:46,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 14:15:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:15:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:15:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:15:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 14:15:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 14:15:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:15:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 14:15:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 14:15:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 14:15:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:15:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:15:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:15:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 14:15:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 14:15:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 14:15:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-21 14:15:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-21 14:15:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-21 14:15:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-21 14:15:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-11-21 14:15:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-11-21 14:15:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2022-11-21 14:15:47,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:15:47,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367788777] [2022-11-21 14:15:47,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367788777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:15:47,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:15:47,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 14:15:47,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306777568] [2022-11-21 14:15:47,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:15:47,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 14:15:47,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:15:47,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 14:15:47,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-21 14:15:47,590 INFO L87 Difference]: Start difference. First operand 1343 states and 1537 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 16 states have internal predecessors, (61), 8 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 7 states have call successors, (29) [2022-11-21 14:15:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:15:50,922 INFO L93 Difference]: Finished difference Result 1383 states and 1581 transitions. [2022-11-21 14:15:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:15:50,923 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 16 states have internal predecessors, (61), 8 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 7 states have call successors, (29) Word has length 219 [2022-11-21 14:15:50,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:15:50,928 INFO L225 Difference]: With dead ends: 1383 [2022-11-21 14:15:50,928 INFO L226 Difference]: Without dead ends: 1316 [2022-11-21 14:15:50,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2022-11-21 14:15:50,930 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 97 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:15:50,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1069 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-21 14:15:50,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2022-11-21 14:15:51,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1309. [2022-11-21 14:15:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 920 states have (on average 1.059782608695652) internal successors, (975), 942 states have internal predecessors, (975), 235 states have call successors, (235), 139 states have call predecessors, (235), 153 states have return successors, (285), 227 states have call predecessors, (285), 221 states have call successors, (285) [2022-11-21 14:15:51,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1495 transitions. [2022-11-21 14:15:51,183 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1495 transitions. Word has length 219 [2022-11-21 14:15:51,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:15:51,184 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 1495 transitions. [2022-11-21 14:15:51,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 16 states have internal predecessors, (61), 8 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 7 states have call successors, (29) [2022-11-21 14:15:51,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1495 transitions. [2022-11-21 14:15:51,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-21 14:15:51,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:15:51,188 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:15:51,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-21 14:15:51,188 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:15:51,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:15:51,189 INFO L85 PathProgramCache]: Analyzing trace with hash -295336162, now seen corresponding path program 1 times [2022-11-21 14:15:51,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:15:51,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751236482] [2022-11-21 14:15:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:15:51,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:15:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:15:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:15:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 14:15:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:15:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:15:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 14:15:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:15:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:15:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 14:15:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:15:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 14:15:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:15:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:15:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 14:15:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 14:15:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 14:15:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 14:15:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:15:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 14:15:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-21 14:15:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-21 14:15:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-21 14:15:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-21 14:15:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:52,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-11-21 14:15:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2022-11-21 14:15:53,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:15:53,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751236482] [2022-11-21 14:15:53,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751236482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:15:53,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:15:53,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-21 14:15:53,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533443166] [2022-11-21 14:15:53,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:15:53,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 14:15:53,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:15:53,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 14:15:53,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-21 14:15:53,238 INFO L87 Difference]: Start difference. First operand 1309 states and 1495 transitions. Second operand has 15 states, 14 states have (on average 5.0) internal successors, (70), 11 states have internal predecessors, (70), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-21 14:15:55,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:15:55,264 INFO L93 Difference]: Finished difference Result 1348 states and 1537 transitions. [2022-11-21 14:15:55,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:15:55,265 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 11 states have internal predecessors, (70), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 215 [2022-11-21 14:15:55,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:15:55,268 INFO L225 Difference]: With dead ends: 1348 [2022-11-21 14:15:55,268 INFO L226 Difference]: Without dead ends: 1346 [2022-11-21 14:15:55,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2022-11-21 14:15:55,269 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 74 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:15:55,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1027 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 14:15:55,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2022-11-21 14:15:55,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1333. [2022-11-21 14:15:55,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 936 states have (on average 1.0587606837606838) internal successors, (991), 959 states have internal predecessors, (991), 238 states have call successors, (238), 143 states have call predecessors, (238), 158 states have return successors, (290), 230 states have call predecessors, (290), 224 states have call successors, (290) [2022-11-21 14:15:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1519 transitions. [2022-11-21 14:15:55,483 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1519 transitions. Word has length 215 [2022-11-21 14:15:55,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:15:55,484 INFO L495 AbstractCegarLoop]: Abstraction has 1333 states and 1519 transitions. [2022-11-21 14:15:55,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 11 states have internal predecessors, (70), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-21 14:15:55,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1519 transitions. [2022-11-21 14:15:55,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-21 14:15:55,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:15:55,486 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:15:55,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-21 14:15:55,486 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:15:55,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:15:55,486 INFO L85 PathProgramCache]: Analyzing trace with hash 880227674, now seen corresponding path program 2 times [2022-11-21 14:15:55,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:15:55,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987223304] [2022-11-21 14:15:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:15:55,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:15:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:58,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:15:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:58,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:15:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:58,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 14:15:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:58,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:15:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:58,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:15:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:58,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 14:15:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:58,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:15:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:58,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:15:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:58,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 14:15:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:58,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:15:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:58,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 14:15:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:15:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:15:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 14:15:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 14:15:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 14:15:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:15:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:15:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 14:15:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 14:15:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-21 14:15:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-21 14:15:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-21 14:15:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-21 14:15:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-11-21 14:15:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:15:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 22 proven. 113 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-21 14:15:59,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:15:59,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987223304] [2022-11-21 14:15:59,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987223304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:15:59,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162818449] [2022-11-21 14:15:59,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:15:59,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:15:59,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:15:59,887 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:15:59,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2495ce5f-5df4-44b9-99f2-941fe463517a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-21 14:16:00,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:16:00,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:16:00,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-21 14:16:00,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:16:00,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:16:00,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9