./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_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_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/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_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/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_0f76bb06-c2a8-4674-83e5-d861d820529c/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 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 --- 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 17:17:24,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:17:24,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:17:24,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:17:24,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:17:24,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:17:24,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:17:24,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:17:24,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:17:24,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:17:24,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:17:24,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:17:24,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:17:24,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:17:24,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:17:24,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:17:24,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:17:24,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:17:24,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:17:24,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:17:24,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:17:24,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:17:24,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:17:24,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:17:24,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:17:24,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:17:24,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:17:24,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:17:24,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:17:24,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:17:24,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:17:24,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:17:24,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:17:24,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:17:24,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:17:24,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:17:24,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:17:24,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:17:24,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:17:24,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:17:24,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:17:24,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 17:17:24,881 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:17:24,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:17:24,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:17:24,882 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:17:24,883 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:17:24,883 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:17:24,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:17:24,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:17:24,884 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:17:24,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:17:24,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:17:24,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:17:24,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:17:24,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:17:24,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:17:24,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:17:24,886 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:17:24,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:17:24,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:17:24,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:17:24,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:17:24,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:17:24,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:17:24,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:17:24,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:17:24,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:17:24,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:17:24,888 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:17:24,889 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:17:24,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:17:24,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 [2022-11-21 17:17:25,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:17:25,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:17:25,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:17:25,235 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:17:25,235 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:17:25,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2022-11-21 17:17:28,260 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:17:28,776 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:17:28,777 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2022-11-21 17:17:28,825 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/data/476ed7d0e/5334a0e1229b499fa6feea5afe56a923/FLAGe6796fd78 [2022-11-21 17:17:28,843 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/data/476ed7d0e/5334a0e1229b499fa6feea5afe56a923 [2022-11-21 17:17:28,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:17:28,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:17:28,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:17:28,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:17:28,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:17:28,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:17:28" (1/1) ... [2022-11-21 17:17:28,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760db054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:28, skipping insertion in model container [2022-11-21 17:17:28,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:17:28" (1/1) ... [2022-11-21 17:17:28,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:17:29,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:17:29,258 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_0f76bb06-c2a8-4674-83e5-d861d820529c/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2022-11-21 17:17:29,266 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_0f76bb06-c2a8-4674-83e5-d861d820529c/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2022-11-21 17:17:30,212 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:30,215 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:30,219 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:30,221 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:30,223 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:30,242 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:30,244 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:30,248 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:30,249 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:30,658 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-21 17:17:30,660 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-21 17:17:30,662 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-21 17:17:30,665 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-21 17:17:30,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-21 17:17:30,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-21 17:17:30,675 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-21 17:17:30,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-21 17:17:30,679 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-21 17:17:30,683 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-21 17:17:30,863 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-21 17:17:30,982 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:30,983 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:31,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:17:31,091 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:17:31,105 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_0f76bb06-c2a8-4674-83e5-d861d820529c/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2022-11-21 17:17:31,105 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_0f76bb06-c2a8-4674-83e5-d861d820529c/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2022-11-21 17:17:31,139 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:31,140 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:31,140 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:31,141 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:31,141 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:31,148 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:31,148 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:31,149 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:31,150 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:31,181 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-21 17:17:31,182 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-21 17:17:31,183 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-21 17:17:31,184 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-21 17:17:31,185 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-21 17:17:31,185 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-21 17:17:31,186 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-21 17:17:31,186 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-21 17:17:31,187 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-21 17:17:31,187 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-21 17:17:31,207 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-21 17:17:31,305 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:31,318 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 17:17:31,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:17:31,688 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:17:31,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:31 WrapperNode [2022-11-21 17:17:31,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:17:31,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:17:31,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:17:31,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:17:31,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:31" (1/1) ... [2022-11-21 17:17:31,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:31" (1/1) ... [2022-11-21 17:17:31,917 INFO L138 Inliner]: procedures = 691, calls = 2623, calls flagged for inlining = 63, calls inlined = 11, statements flattened = 936 [2022-11-21 17:17:31,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:17:31,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:17:31,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:17:31,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:17:31,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:31" (1/1) ... [2022-11-21 17:17:31,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:31" (1/1) ... [2022-11-21 17:17:31,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:31" (1/1) ... [2022-11-21 17:17:31,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:31" (1/1) ... [2022-11-21 17:17:31,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:31" (1/1) ... [2022-11-21 17:17:31,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:31" (1/1) ... [2022-11-21 17:17:31,990 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:31" (1/1) ... [2022-11-21 17:17:31,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:31" (1/1) ... [2022-11-21 17:17:32,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:17:32,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:17:32,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:17:32,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:17:32,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:31" (1/1) ... [2022-11-21 17:17:32,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:17:32,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:17:32,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:17:32,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:17:32,131 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-21 17:17:32,131 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-21 17:17:32,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:17:32,132 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-21 17:17:32,132 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-21 17:17:32,132 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-21 17:17:32,132 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-21 17:17:32,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:17:32,133 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-21 17:17:32,133 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-21 17:17:32,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-21 17:17:32,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-21 17:17:32,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:17:32,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:17:32,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 17:17:32,135 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-21 17:17:32,136 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-21 17:17:32,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:17:32,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:17:32,136 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-21 17:17:32,136 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-21 17:17:32,137 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-21 17:17:32,137 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-21 17:17:32,137 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-21 17:17:32,137 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-21 17:17:32,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-21 17:17:32,137 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-21 17:17:32,137 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 17:17:32,137 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 17:17:32,137 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-21 17:17:32,138 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-21 17:17:32,138 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-21 17:17:32,138 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-21 17:17:32,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:17:32,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 17:17:32,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 17:17:32,138 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-21 17:17:32,138 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-21 17:17:32,138 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-21 17:17:32,138 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-21 17:17:32,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:17:32,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:17:32,509 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:17:32,512 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:17:33,980 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:17:33,988 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:17:33,991 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-21 17:17:33,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:17:33 BoogieIcfgContainer [2022-11-21 17:17:33,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:17:33,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:17:33,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:17:34,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:17:34,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:17:28" (1/3) ... [2022-11-21 17:17:34,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c549445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:17:34, skipping insertion in model container [2022-11-21 17:17:34,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:31" (2/3) ... [2022-11-21 17:17:34,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c549445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:17:34, skipping insertion in model container [2022-11-21 17:17:34,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:17:33" (3/3) ... [2022-11-21 17:17:34,009 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_init_copy_harness.i [2022-11-21 17:17:34,028 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:17:34,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:17:34,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:17:34,117 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;@3236ad53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:17:34,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:17:34,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-21 17:17:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-21 17:17:34,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:34,141 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:34,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:17:34,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:34,150 INFO L85 PathProgramCache]: Analyzing trace with hash -283420546, now seen corresponding path program 1 times [2022-11-21 17:17:34,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:34,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605920674] [2022-11-21 17:17:34,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:34,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:34,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:17:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:17:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:34,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:17:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:34,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:17:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 17:17:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:17:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:35,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:35,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 17:17:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:35,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 17:17:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:35,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:17:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:35,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 17:17:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-21 17:17:35,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:35,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605920674] [2022-11-21 17:17:35,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605920674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:35,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:35,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:17:35,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643387819] [2022-11-21 17:17:35,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:35,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:17:35,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:17:35,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:17:35,150 INFO L87 Difference]: Start difference. First operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:17:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:35,716 INFO L93 Difference]: Finished difference Result 376 states and 532 transitions. [2022-11-21 17:17:35,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:17:35,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 82 [2022-11-21 17:17:35,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:35,733 INFO L225 Difference]: With dead ends: 376 [2022-11-21 17:17:35,734 INFO L226 Difference]: Without dead ends: 189 [2022-11-21 17:17:35,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 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 17:17:35,753 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 82 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:35,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 226 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 17:17:35,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-21 17:17:35,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2022-11-21 17:17:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 115 states have internal predecessors, (133), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-21 17:17:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2022-11-21 17:17:35,905 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 82 [2022-11-21 17:17:35,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:35,906 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2022-11-21 17:17:35,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:17:35,906 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2022-11-21 17:17:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-21 17:17:35,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:35,910 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:35,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:17:35,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:17:35,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:35,911 INFO L85 PathProgramCache]: Analyzing trace with hash 426190495, now seen corresponding path program 1 times [2022-11-21 17:17:35,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:35,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702323127] [2022-11-21 17:17:35,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:35,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:17:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:17:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:17:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:17:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 17:17:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:17:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 17:17:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 17:17:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:17:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 17:17:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:17:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 17:17:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-21 17:17:36,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:36,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702323127] [2022-11-21 17:17:36,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702323127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:17:36,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059012166] [2022-11-21 17:17:36,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:36,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:17:36,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:17:36,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:17:37,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:17:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:37,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 2594 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:17:37,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:17:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-21 17:17:37,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:17:37,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059012166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:37,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:17:37,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-21 17:17:37,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88530440] [2022-11-21 17:17:37,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:37,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:17:37,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:37,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:17:37,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:17:37,804 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-21 17:17:37,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:37,863 INFO L93 Difference]: Finished difference Result 248 states and 316 transitions. [2022-11-21 17:17:37,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:17:37,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92 [2022-11-21 17:17:37,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:37,866 INFO L225 Difference]: With dead ends: 248 [2022-11-21 17:17:37,866 INFO L226 Difference]: Without dead ends: 173 [2022-11-21 17:17:37,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:17:37,868 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:37,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1128 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:17:37,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-21 17:17:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-21 17:17:37,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 111 states have internal predecessors, (127), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-21 17:17:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 220 transitions. [2022-11-21 17:17:37,883 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 220 transitions. Word has length 92 [2022-11-21 17:17:37,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:37,883 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 220 transitions. [2022-11-21 17:17:37,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-21 17:17:37,884 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 220 transitions. [2022-11-21 17:17:37,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-21 17:17:37,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:37,886 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:37,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:17:38,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:17:38,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:17:38,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:38,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1901749225, now seen corresponding path program 1 times [2022-11-21 17:17:38,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:38,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961975433] [2022-11-21 17:17:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:38,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:17:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:17:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:17:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:17:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 17:17:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:17:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 17:17:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 17:17:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:17:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 17:17:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:17:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 17:17:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-21 17:17:38,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:38,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961975433] [2022-11-21 17:17:38,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961975433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:17:38,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344268454] [2022-11-21 17:17:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:38,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:17:38,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:17:38,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:17:38,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:17:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:39,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 17:17:39,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:17:39,687 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-21 17:17:39,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:17:39,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344268454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:39,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:17:39,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 11 [2022-11-21 17:17:39,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441686825] [2022-11-21 17:17:39,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:39,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:17:39,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:39,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:17:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:17:39,692 INFO L87 Difference]: Start difference. First operand 173 states and 220 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-21 17:17:39,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:39,955 INFO L93 Difference]: Finished difference Result 249 states and 320 transitions. [2022-11-21 17:17:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:17:39,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 95 [2022-11-21 17:17:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:39,963 INFO L225 Difference]: With dead ends: 249 [2022-11-21 17:17:39,963 INFO L226 Difference]: Without dead ends: 176 [2022-11-21 17:17:39,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:17:39,967 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 78 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:39,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1094 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:17:39,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-21 17:17:39,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-21 17:17:39,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 114 states have internal predecessors, (129), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (49), 46 states have call predecessors, (49), 46 states have call successors, (49) [2022-11-21 17:17:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 225 transitions. [2022-11-21 17:17:39,993 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 225 transitions. Word has length 95 [2022-11-21 17:17:39,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:39,994 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 225 transitions. [2022-11-21 17:17:39,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-21 17:17:39,994 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 225 transitions. [2022-11-21 17:17:39,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-21 17:17:39,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:39,996 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:40,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:17:40,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:17:40,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:17:40,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:40,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1019605314, now seen corresponding path program 1 times [2022-11-21 17:17:40,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:40,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809158390] [2022-11-21 17:17:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:40,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:17:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:17:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:17:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:17:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 17:17:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:17:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 17:17:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 17:17:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:17:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 17:17:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:17:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:40,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 17:17:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-21 17:17:41,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:41,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809158390] [2022-11-21 17:17:41,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809158390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:17:41,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715027835] [2022-11-21 17:17:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:41,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:17:41,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:17:41,004 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:17:41,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:17:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:41,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:17:41,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:17:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-21 17:17:41,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:17:41,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715027835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:41,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:17:41,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-21 17:17:41,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124013077] [2022-11-21 17:17:41,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:41,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:17:41,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:41,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:17:41,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:17:41,730 INFO L87 Difference]: Start difference. First operand 176 states and 225 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-21 17:17:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:42,000 INFO L93 Difference]: Finished difference Result 338 states and 429 transitions. [2022-11-21 17:17:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:17:42,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 101 [2022-11-21 17:17:42,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:42,003 INFO L225 Difference]: With dead ends: 338 [2022-11-21 17:17:42,003 INFO L226 Difference]: Without dead ends: 176 [2022-11-21 17:17:42,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:17:42,004 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 249 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:42,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 479 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:17:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-21 17:17:42,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-21 17:17:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 114 states have internal predecessors, (129), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2022-11-21 17:17:42,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 223 transitions. [2022-11-21 17:17:42,021 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 223 transitions. Word has length 101 [2022-11-21 17:17:42,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:42,022 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 223 transitions. [2022-11-21 17:17:42,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-21 17:17:42,022 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 223 transitions. [2022-11-21 17:17:42,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-21 17:17:42,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:42,024 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:42,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:17:42,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:17:42,235 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:17:42,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:42,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2090058387, now seen corresponding path program 2 times [2022-11-21 17:17:42,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:42,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355906200] [2022-11-21 17:17:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:42,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:17:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:42,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:17:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:17:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:42,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:42,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:17:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:42,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:17:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:42,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:17:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:42,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:42,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 17:17:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:43,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 17:17:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:43,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 17:17:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:43,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 17:17:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 17:17:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 17:17:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-21 17:17:43,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:43,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355906200] [2022-11-21 17:17:43,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355906200] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:17:43,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047413554] [2022-11-21 17:17:43,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:17:43,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:17:43,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:17:43,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:17:43,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:17:43,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 17:17:43,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:17:43,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 17:17:43,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:17:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-21 17:17:43,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:17:43,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047413554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:43,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:17:43,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-21 17:17:43,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965250209] [2022-11-21 17:17:43,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:43,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:17:43,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:43,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:17:43,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:17:43,796 INFO L87 Difference]: Start difference. First operand 176 states and 223 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-21 17:17:43,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:43,911 INFO L93 Difference]: Finished difference Result 188 states and 240 transitions. [2022-11-21 17:17:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:17:43,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 107 [2022-11-21 17:17:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:43,916 INFO L225 Difference]: With dead ends: 188 [2022-11-21 17:17:43,916 INFO L226 Difference]: Without dead ends: 186 [2022-11-21 17:17:43,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:17:43,918 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 23 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:43,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1482 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:17:43,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-21 17:17:43,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2022-11-21 17:17:43,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 121 states have internal predecessors, (135), 48 states have call successors, (48), 16 states have call predecessors, (48), 18 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2022-11-21 17:17:43,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 237 transitions. [2022-11-21 17:17:43,946 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 237 transitions. Word has length 107 [2022-11-21 17:17:43,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:43,947 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 237 transitions. [2022-11-21 17:17:43,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-21 17:17:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 237 transitions. [2022-11-21 17:17:43,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-21 17:17:43,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:43,949 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:43,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:17:44,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:17:44,159 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:17:44,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:44,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1813963275, now seen corresponding path program 1 times [2022-11-21 17:17:44,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:44,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110813258] [2022-11-21 17:17:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:44,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:17:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:17:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:17:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:17:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:17:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:17:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 17:17:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 17:17:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 17:17:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 17:17:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 17:17:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 17:17:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-21 17:17:44,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:44,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110813258] [2022-11-21 17:17:44,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110813258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:17:44,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140688363] [2022-11-21 17:17:44,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:44,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:17:44,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:17:44,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:17:44,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:17:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:45,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 17:17:45,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:17:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-21 17:17:45,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:17:45,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140688363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:45,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:17:45,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-21 17:17:45,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286124579] [2022-11-21 17:17:45,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:45,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:17:45,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:45,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:17:45,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:17:45,682 INFO L87 Difference]: Start difference. First operand 185 states and 237 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-21 17:17:46,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:46,031 INFO L93 Difference]: Finished difference Result 342 states and 429 transitions. [2022-11-21 17:17:46,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:17:46,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 111 [2022-11-21 17:17:46,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:46,033 INFO L225 Difference]: With dead ends: 342 [2022-11-21 17:17:46,033 INFO L226 Difference]: Without dead ends: 182 [2022-11-21 17:17:46,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:17:46,035 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 275 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:46,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 769 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:17:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-21 17:17:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-21 17:17:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 116 states have (on average 1.1379310344827587) internal successors, (132), 118 states have internal predecessors, (132), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-11-21 17:17:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 233 transitions. [2022-11-21 17:17:46,054 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 233 transitions. Word has length 111 [2022-11-21 17:17:46,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:46,055 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 233 transitions. [2022-11-21 17:17:46,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-21 17:17:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 233 transitions. [2022-11-21 17:17:46,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-21 17:17:46,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:46,057 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:46,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:17:46,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:17:46,268 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:17:46,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash 693216864, now seen corresponding path program 1 times [2022-11-21 17:17:46,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:46,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687088138] [2022-11-21 17:17:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:46,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:46,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:17:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:46,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:17:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:17:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:46,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:17:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:46,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:17:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:46,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:17:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:46,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 17:17:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:46,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 17:17:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:46,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 17:17:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:46,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 17:17:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:46,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 17:17:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:47,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 17:17:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:47,039 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-21 17:17:47,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:47,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687088138] [2022-11-21 17:17:47,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687088138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:47,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:47,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:17:47,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293085500] [2022-11-21 17:17:47,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:47,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:17:47,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:47,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:17:47,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:17:47,042 INFO L87 Difference]: Start difference. First operand 182 states and 233 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-21 17:17:47,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:47,837 INFO L93 Difference]: Finished difference Result 286 states and 361 transitions. [2022-11-21 17:17:47,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:17:47,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-11-21 17:17:47,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:47,839 INFO L225 Difference]: With dead ends: 286 [2022-11-21 17:17:47,839 INFO L226 Difference]: Without dead ends: 200 [2022-11-21 17:17:47,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:17:47,840 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 170 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:47,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 347 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 17:17:47,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-21 17:17:47,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 183. [2022-11-21 17:17:47,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 119 states have internal predecessors, (133), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-11-21 17:17:47,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2022-11-21 17:17:47,857 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 117 [2022-11-21 17:17:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:47,857 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2022-11-21 17:17:47,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-21 17:17:47,858 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2022-11-21 17:17:47,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-21 17:17:47,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:47,859 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:47,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:17:47,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:17:47,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:47,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1457718631, now seen corresponding path program 1 times [2022-11-21 17:17:47,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:47,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918372045] [2022-11-21 17:17:47,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:47,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:17:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:17:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:17:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:17:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:17:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:17:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 17:17:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 17:17:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 17:17:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 17:17:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 17:17:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 17:17:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-21 17:17:48,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:48,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918372045] [2022-11-21 17:17:48,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918372045] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:17:48,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465544816] [2022-11-21 17:17:48,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:48,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:17:48,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:17:48,953 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:17:48,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 17:17:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:49,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 17:17:49,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:17:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-21 17:17:49,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:17:49,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465544816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:49,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:17:49,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-21 17:17:49,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919419181] [2022-11-21 17:17:49,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:49,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:17:49,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:49,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:17:49,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:17:49,743 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-21 17:17:50,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:50,376 INFO L93 Difference]: Finished difference Result 370 states and 486 transitions. [2022-11-21 17:17:50,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:17:50,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 118 [2022-11-21 17:17:50,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:50,378 INFO L225 Difference]: With dead ends: 370 [2022-11-21 17:17:50,378 INFO L226 Difference]: Without dead ends: 201 [2022-11-21 17:17:50,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:17:50,380 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 40 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:50,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 776 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 17:17:50,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-21 17:17:50,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 188. [2022-11-21 17:17:50,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.1475409836065573) internal successors, (140), 124 states have internal predecessors, (140), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-11-21 17:17:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 241 transitions. [2022-11-21 17:17:50,402 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 241 transitions. Word has length 118 [2022-11-21 17:17:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:50,403 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 241 transitions. [2022-11-21 17:17:50,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-21 17:17:50,404 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 241 transitions. [2022-11-21 17:17:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-21 17:17:50,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:50,407 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:50,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:17:50,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:17:50,618 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:17:50,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:50,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1199553193, now seen corresponding path program 1 times [2022-11-21 17:17:50,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:50,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315331801] [2022-11-21 17:17:50,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:50,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:17:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:17:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:17:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:17:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:17:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:17:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:17:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 17:17:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 17:17:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 17:17:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 17:17:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 17:17:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 17:17:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-21 17:17:51,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:51,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315331801] [2022-11-21 17:17:51,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315331801] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:17:51,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422397766] [2022-11-21 17:17:51,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:51,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:17:51,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:17:51,551 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:17:51,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 17:17:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:52,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-21 17:17:52,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:17:52,341 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 17:17:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-21 17:17:52,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:17:52,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422397766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:52,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:17:52,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2022-11-21 17:17:52,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83997137] [2022-11-21 17:17:52,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:52,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:17:52,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:52,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:17:52,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:17:52,647 INFO L87 Difference]: Start difference. First operand 188 states and 241 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-21 17:17:55,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:17:57,540 WARN L539 Checker$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 17:17:59,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:18:01,762 WARN L539 Checker$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 17:18:03,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:18:05,811 WARN L539 Checker$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 17:18:08,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:18:10,054 WARN L539 Checker$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 17:18:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:18:10,221 INFO L93 Difference]: Finished difference Result 414 states and 522 transitions. [2022-11-21 17:18:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:18:10,222 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 118 [2022-11-21 17:18:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:18:10,224 INFO L225 Difference]: With dead ends: 414 [2022-11-21 17:18:10,224 INFO L226 Difference]: Without dead ends: 240 [2022-11-21 17:18:10,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:18:10,225 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 184 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 71 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:18:10,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 974 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 332 Invalid, 8 Unknown, 0 Unchecked, 17.3s Time] [2022-11-21 17:18:10,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-21 17:18:10,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 233. [2022-11-21 17:18:10,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 157 states have (on average 1.1656050955414012) internal successors, (183), 161 states have internal predecessors, (183), 52 states have call successors, (52), 21 states have call predecessors, (52), 23 states have return successors, (57), 50 states have call predecessors, (57), 51 states have call successors, (57) [2022-11-21 17:18:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 292 transitions. [2022-11-21 17:18:10,247 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 292 transitions. Word has length 118 [2022-11-21 17:18:10,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:18:10,247 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 292 transitions. [2022-11-21 17:18:10,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-21 17:18:10,248 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 292 transitions. [2022-11-21 17:18:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-21 17:18:10,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:18:10,249 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:10,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 17:18:10,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-21 17:18:10,460 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:18:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2078172463, now seen corresponding path program 2 times [2022-11-21 17:18:10,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:10,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375203774] [2022-11-21 17:18:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:10,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:18:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:18:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:18:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:18:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:18:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 17:18:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 17:18:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:18:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 17:18:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 17:18:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 17:18:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:18:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 17:18:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 17:18:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-21 17:18:11,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:18:11,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375203774] [2022-11-21 17:18:11,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375203774] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:18:11,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41131322] [2022-11-21 17:18:11,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:18:11,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:18:11,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:18:11,333 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:18:11,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 17:18:11,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:18:11,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:18:11,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-21 17:18:11,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:18:12,072 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 17:18:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-21 17:18:12,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:18:13,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-21 17:18:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-21 17:18:13,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41131322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:18:13,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:18:13,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 11] total 26 [2022-11-21 17:18:13,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83890491] [2022-11-21 17:18:13,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:18:13,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 17:18:13,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:18:13,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 17:18:13,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-11-21 17:18:13,467 INFO L87 Difference]: Start difference. First operand 233 states and 292 transitions. Second operand has 26 states, 24 states have (on average 6.041666666666667) internal successors, (145), 22 states have internal predecessors, (145), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-21 17:18:16,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:18:18,913 WARN L539 Checker$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 17:18:21,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:18:23,624 WARN L539 Checker$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 17:18:25,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:18:27,916 WARN L539 Checker$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 17:18:30,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:18:32,665 WARN L539 Checker$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 17:18:35,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:18:37,387 WARN L539 Checker$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 17:18:38,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:18:38,103 INFO L93 Difference]: Finished difference Result 420 states and 523 transitions. [2022-11-21 17:18:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-21 17:18:38,104 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 6.041666666666667) internal successors, (145), 22 states have internal predecessors, (145), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) Word has length 122 [2022-11-21 17:18:38,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:18:38,108 INFO L225 Difference]: With dead ends: 420 [2022-11-21 17:18:38,108 INFO L226 Difference]: Without dead ends: 254 [2022-11-21 17:18:38,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 248 SyntacticMatches, 12 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=267, Invalid=1895, Unknown=0, NotChecked=0, Total=2162 [2022-11-21 17:18:38,110 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 522 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 250 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:18:38,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 955 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 2715 Invalid, 10 Unknown, 0 Unchecked, 23.8s Time] [2022-11-21 17:18:38,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-21 17:18:38,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 230. [2022-11-21 17:18:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 155 states have (on average 1.1548387096774193) internal successors, (179), 158 states have internal predecessors, (179), 52 states have call successors, (52), 21 states have call predecessors, (52), 22 states have return successors, (56), 50 states have call predecessors, (56), 51 states have call successors, (56) [2022-11-21 17:18:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 287 transitions. [2022-11-21 17:18:38,132 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 287 transitions. Word has length 122 [2022-11-21 17:18:38,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:18:38,133 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 287 transitions. [2022-11-21 17:18:38,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 6.041666666666667) internal successors, (145), 22 states have internal predecessors, (145), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-21 17:18:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 287 transitions. [2022-11-21 17:18:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-21 17:18:38,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:18:38,135 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:38,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 17:18:38,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 17:18:38,343 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:18:38,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:38,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1556144182, now seen corresponding path program 1 times [2022-11-21 17:18:38,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:38,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587439569] [2022-11-21 17:18:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:38,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:18:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:18:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:18:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:18:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:18:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 17:18:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 17:18:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:18:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 17:18:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 17:18:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 17:18:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:18:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 17:18:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 17:18:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-21 17:18:39,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:18:39,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587439569] [2022-11-21 17:18:39,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587439569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:18:39,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328159520] [2022-11-21 17:18:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:39,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:18:39,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:18:39,352 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:18:39,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 17:18:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:39,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-21 17:18:39,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:18:40,073 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 17:18:40,826 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 16 treesize of output 8 [2022-11-21 17:18:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-21 17:18:40,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:18:40,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-21 17:18:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-21 17:18:41,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328159520] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:18:41,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:18:41,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 20 [2022-11-21 17:18:41,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599147604] [2022-11-21 17:18:41,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:18:41,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 17:18:41,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:18:41,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 17:18:41,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:18:41,086 INFO L87 Difference]: Start difference. First operand 230 states and 287 transitions. Second operand has 20 states, 20 states have (on average 6.4) internal successors, (128), 16 states have internal predecessors, (128), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-21 17:18:43,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:18:45,859 WARN L539 Checker$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 17:18:48,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:18:50,186 WARN L539 Checker$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 17:18:52,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:18:54,443 WARN L539 Checker$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 17:18:56,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:18:58,952 WARN L539 Checker$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 17:19:01,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:19:03,412 WARN L539 Checker$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 17:19:05,462 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 17:19:05,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:05,996 INFO L93 Difference]: Finished difference Result 350 states and 435 transitions. [2022-11-21 17:19:05,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 17:19:05,997 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 16 states have internal predecessors, (128), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) Word has length 127 [2022-11-21 17:19:05,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:05,998 INFO L225 Difference]: With dead ends: 350 [2022-11-21 17:19:05,999 INFO L226 Difference]: Without dead ends: 252 [2022-11-21 17:19:05,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 258 SyntacticMatches, 13 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 17:19:06,000 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 392 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 233 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 2455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:06,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 892 Invalid, 2455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2211 Invalid, 11 Unknown, 0 Unchecked, 24.5s Time] [2022-11-21 17:19:06,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-21 17:19:06,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 235. [2022-11-21 17:19:06,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 160 states have (on average 1.15) internal successors, (184), 162 states have internal predecessors, (184), 52 states have call successors, (52), 21 states have call predecessors, (52), 22 states have return successors, (56), 51 states have call predecessors, (56), 51 states have call successors, (56) [2022-11-21 17:19:06,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 292 transitions. [2022-11-21 17:19:06,030 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 292 transitions. Word has length 127 [2022-11-21 17:19:06,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:06,030 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 292 transitions. [2022-11-21 17:19:06,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 16 states have internal predecessors, (128), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-21 17:19:06,031 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 292 transitions. [2022-11-21 17:19:06,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-21 17:19:06,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:06,033 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:19:06,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:06,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 17:19:06,244 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:06,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:06,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1595223578, now seen corresponding path program 1 times [2022-11-21 17:19:06,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:06,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131591241] [2022-11-21 17:19:06,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:06,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:19:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:06,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:19:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:06,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:19:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:06,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:19:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:06,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:19:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:06,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 17:19:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:06,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 17:19:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:07,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:19:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:07,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 17:19:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 17:19:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:07,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:19:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:07,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 17:19:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:07,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 17:19:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:07,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-21 17:19:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-21 17:19:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-21 17:19:07,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:07,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131591241] [2022-11-21 17:19:07,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131591241] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:19:07,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696589936] [2022-11-21 17:19:07,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:07,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:19:07,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:07,280 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:19:07,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 17:19:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:07,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 2785 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-21 17:19:07,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:08,496 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 17:19:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 17:19:08,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:19:08,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696589936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:08,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:19:08,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2022-11-21 17:19:08,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868499361] [2022-11-21 17:19:08,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:08,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:19:08,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:08,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:19:08,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:19:08,528 INFO L87 Difference]: Start difference. First operand 235 states and 292 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-21 17:19:10,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:10,216 INFO L93 Difference]: Finished difference Result 578 states and 740 transitions. [2022-11-21 17:19:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:19:10,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 131 [2022-11-21 17:19:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:10,219 INFO L225 Difference]: With dead ends: 578 [2022-11-21 17:19:10,219 INFO L226 Difference]: Without dead ends: 409 [2022-11-21 17:19:10,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 146 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-11-21 17:19:10,220 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 269 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:10,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1858 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 17:19:10,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-11-21 17:19:10,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 324. [2022-11-21 17:19:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 229 states have (on average 1.1615720524017468) internal successors, (266), 234 states have internal predecessors, (266), 63 states have call successors, (63), 27 states have call predecessors, (63), 31 states have return successors, (78), 62 states have call predecessors, (78), 61 states have call successors, (78) [2022-11-21 17:19:10,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 407 transitions. [2022-11-21 17:19:10,253 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 407 transitions. Word has length 131 [2022-11-21 17:19:10,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:10,254 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 407 transitions. [2022-11-21 17:19:10,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-21 17:19:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 407 transitions. [2022-11-21 17:19:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-21 17:19:10,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:10,256 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:19:10,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:10,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:19:10,467 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:10,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:10,467 INFO L85 PathProgramCache]: Analyzing trace with hash -564182680, now seen corresponding path program 1 times [2022-11-21 17:19:10,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:10,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328319449] [2022-11-21 17:19:10,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:10,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:19:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:19:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:19:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:19:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:19:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 17:19:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 17:19:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:19:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 17:19:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 17:19:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:19:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 17:19:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 17:19:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-21 17:19:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-21 17:19:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-21 17:19:11,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:11,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328319449] [2022-11-21 17:19:11,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328319449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:19:11,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788646924] [2022-11-21 17:19:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:11,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:19:11,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:11,407 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:19:11,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 17:19:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:12,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 2780 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-21 17:19:12,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-21 17:19:12,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:19:12,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788646924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:12,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:19:12,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2022-11-21 17:19:12,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844883559] [2022-11-21 17:19:12,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:12,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:19:12,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:12,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:19:12,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:19:12,185 INFO L87 Difference]: Start difference. First operand 324 states and 407 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-21 17:19:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:12,424 INFO L93 Difference]: Finished difference Result 656 states and 826 transitions. [2022-11-21 17:19:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:19:12,425 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2022-11-21 17:19:12,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:12,427 INFO L225 Difference]: With dead ends: 656 [2022-11-21 17:19:12,428 INFO L226 Difference]: Without dead ends: 349 [2022-11-21 17:19:12,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:19:12,431 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 13 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:12,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1607 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:19:12,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-11-21 17:19:12,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 329. [2022-11-21 17:19:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 233 states have (on average 1.1587982832618027) internal successors, (270), 239 states have internal predecessors, (270), 63 states have call successors, (63), 27 states have call predecessors, (63), 32 states have return successors, (79), 62 states have call predecessors, (79), 61 states have call successors, (79) [2022-11-21 17:19:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 412 transitions. [2022-11-21 17:19:12,471 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 412 transitions. Word has length 131 [2022-11-21 17:19:12,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:12,471 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 412 transitions. [2022-11-21 17:19:12,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-21 17:19:12,472 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 412 transitions. [2022-11-21 17:19:12,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-21 17:19:12,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:12,474 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:19:12,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:12,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:19:12,688 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:12,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:12,688 INFO L85 PathProgramCache]: Analyzing trace with hash 545430093, now seen corresponding path program 1 times [2022-11-21 17:19:12,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:12,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904963007] [2022-11-21 17:19:12,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:12,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:12,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:19:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:12,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:19:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:12,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:19:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:12,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:19:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:19:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:13,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:19:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:13,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:19:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:13,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:19:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:13,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:19:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:13,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:19:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:13,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 17:19:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:13,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 17:19:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:13,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 17:19:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:13,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 17:19:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:13,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 17:19:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-21 17:19:13,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:13,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904963007] [2022-11-21 17:19:13,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904963007] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:19:13,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318189744] [2022-11-21 17:19:13,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:13,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:19:13,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:13,144 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:19:13,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 17:19:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:13,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 2785 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:19:13,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-21 17:19:13,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:19:13,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318189744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:13,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:19:13,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-21 17:19:13,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825263537] [2022-11-21 17:19:13,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:13,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:19:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:19:13,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:19:13,812 INFO L87 Difference]: Start difference. First operand 329 states and 412 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 17:19:13,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:13,856 INFO L93 Difference]: Finished difference Result 607 states and 769 transitions. [2022-11-21 17:19:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:19:13,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2022-11-21 17:19:13,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:13,858 INFO L225 Difference]: With dead ends: 607 [2022-11-21 17:19:13,859 INFO L226 Difference]: Without dead ends: 295 [2022-11-21 17:19:13,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:19:13,861 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 9 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:13,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 642 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:19:13,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-21 17:19:13,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 281. [2022-11-21 17:19:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 195 states have (on average 1.1384615384615384) internal successors, (222), 200 states have internal predecessors, (222), 56 states have call successors, (56), 25 states have call predecessors, (56), 29 states have return successors, (70), 55 states have call predecessors, (70), 54 states have call successors, (70) [2022-11-21 17:19:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 348 transitions. [2022-11-21 17:19:13,887 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 348 transitions. Word has length 133 [2022-11-21 17:19:13,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:13,888 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 348 transitions. [2022-11-21 17:19:13,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 17:19:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 348 transitions. [2022-11-21 17:19:13,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-21 17:19:13,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:13,891 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:19:13,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:14,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 17:19:14,106 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:14,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:14,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1725581711, now seen corresponding path program 1 times [2022-11-21 17:19:14,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:14,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677978203] [2022-11-21 17:19:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:14,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:19:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:19:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:19:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:19:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:19:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:19:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:19:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:19:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:19:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:19:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 17:19:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 17:19:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 17:19:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 17:19:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 17:19:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-21 17:19:14,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:14,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677978203] [2022-11-21 17:19:14,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677978203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:19:14,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500455327] [2022-11-21 17:19:14,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:14,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:19:14,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:14,559 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:19:14,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 17:19:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:15,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 2792 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:19:15,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-21 17:19:15,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:19:15,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500455327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:15,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:19:15,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-21 17:19:15,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593335870] [2022-11-21 17:19:15,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:15,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:19:15,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:15,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:19:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:19:15,225 INFO L87 Difference]: Start difference. First operand 281 states and 348 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 17:19:15,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:15,272 INFO L93 Difference]: Finished difference Result 558 states and 702 transitions. [2022-11-21 17:19:15,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:19:15,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2022-11-21 17:19:15,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:15,275 INFO L225 Difference]: With dead ends: 558 [2022-11-21 17:19:15,275 INFO L226 Difference]: Without dead ends: 301 [2022-11-21 17:19:15,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:19:15,282 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 28 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:15,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 660 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:19:15,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-21 17:19:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 281. [2022-11-21 17:19:15,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 195 states have (on average 1.1282051282051282) internal successors, (220), 200 states have internal predecessors, (220), 56 states have call successors, (56), 25 states have call predecessors, (56), 29 states have return successors, (70), 55 states have call predecessors, (70), 54 states have call successors, (70) [2022-11-21 17:19:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 346 transitions. [2022-11-21 17:19:15,307 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 346 transitions. Word has length 133 [2022-11-21 17:19:15,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:15,308 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 346 transitions. [2022-11-21 17:19:15,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 17:19:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 346 transitions. [2022-11-21 17:19:15,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-21 17:19:15,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:15,310 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:19:15,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:15,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 17:19:15,525 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash 418439313, now seen corresponding path program 1 times [2022-11-21 17:19:15,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:15,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975860139] [2022-11-21 17:19:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:15,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:19:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:19:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:19:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:19:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:19:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:19:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:19:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:19:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:19:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:19:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 17:19:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 17:19:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 17:19:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 17:19:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 17:19:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-21 17:19:16,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:16,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975860139] [2022-11-21 17:19:16,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975860139] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:19:16,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838609294] [2022-11-21 17:19:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:16,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:19:16,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:16,555 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:19:16,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 17:19:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:17,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 2787 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-21 17:19:17,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:17,247 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 6 treesize of output 5 [2022-11-21 17:19:17,754 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 17:19:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 17:19:17,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:19:17,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838609294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:17,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:19:17,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2022-11-21 17:19:17,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137640036] [2022-11-21 17:19:17,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:17,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:19:17,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:17,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:19:17,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:19:17,782 INFO L87 Difference]: Start difference. First operand 281 states and 346 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-21 17:19:19,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:19,317 INFO L93 Difference]: Finished difference Result 624 states and 792 transitions. [2022-11-21 17:19:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:19:19,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 133 [2022-11-21 17:19:19,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:19,320 INFO L225 Difference]: With dead ends: 624 [2022-11-21 17:19:19,320 INFO L226 Difference]: Without dead ends: 423 [2022-11-21 17:19:19,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 148 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2022-11-21 17:19:19,322 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 209 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:19,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 1802 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 17:19:19,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-21 17:19:19,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 335. [2022-11-21 17:19:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 237 states have (on average 1.1265822784810127) internal successors, (267), 243 states have internal predecessors, (267), 63 states have call successors, (63), 29 states have call predecessors, (63), 34 states have return successors, (79), 62 states have call predecessors, (79), 61 states have call successors, (79) [2022-11-21 17:19:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 409 transitions. [2022-11-21 17:19:19,360 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 409 transitions. Word has length 133 [2022-11-21 17:19:19,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:19,361 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 409 transitions. [2022-11-21 17:19:19,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-21 17:19:19,361 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 409 transitions. [2022-11-21 17:19:19,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-21 17:19:19,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:19,364 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:19:19,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 17:19:19,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 17:19:19,576 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:19,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1769824531, now seen corresponding path program 1 times [2022-11-21 17:19:19,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:19,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292076292] [2022-11-21 17:19:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:19,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:19:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:19:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:19:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:19:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:19:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:19:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:19:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:19:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:19:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:19:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 17:19:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 17:19:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 17:19:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 17:19:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 17:19:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-21 17:19:20,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:20,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292076292] [2022-11-21 17:19:20,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292076292] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:19:20,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353148290] [2022-11-21 17:19:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:20,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:19:20,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:20,551 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:19:20,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 17:19:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:21,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 2792 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-21 17:19:21,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:21,231 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 17:19:21,502 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 17:19:21,503 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 17:19:21,550 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 17:19:21,954 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 5 treesize of output 3 [2022-11-21 17:19:30,134 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_52| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_52|) 8))) (and (not (= .cse0 |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_52|)) (not (= .cse0 0))))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_1832 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_1832)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|)))) is different from true [2022-11-21 17:19:30,176 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 17:19:30,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 18 [2022-11-21 17:19:32,579 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 17:19:32,580 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 15 treesize of output 15 [2022-11-21 17:19:32,643 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 17:19:38,820 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 17:19:55,464 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 24 treesize of output 12 [2022-11-21 17:19:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 53 proven. 47 refuted. 0 times theorem prover too weak. 30 trivial. 2 not checked. [2022-11-21 17:19:55,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:19:55,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353148290] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:19:55,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:19:55,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 19] total 26 [2022-11-21 17:19:55,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846484195] [2022-11-21 17:19:55,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:19:55,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 17:19:55,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:55,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 17:19:55,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=657, Unknown=12, NotChecked=52, Total=812 [2022-11-21 17:19:55,687 INFO L87 Difference]: Start difference. First operand 335 states and 409 transitions. Second operand has 26 states, 26 states have (on average 5.5) internal successors, (143), 23 states have internal predecessors, (143), 10 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-21 17:19:59,501 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 17:20:01,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:03,585 WARN L539 Checker$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 17:20:07,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:09,732 WARN L539 Checker$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 17:20:11,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:13,776 WARN L539 Checker$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 17:20:15,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:17,876 WARN L539 Checker$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 17:20:19,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:21,816 WARN L539 Checker$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 17:20:23,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:25,907 WARN L539 Checker$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 17:20:27,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:29,928 WARN L539 Checker$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 17:20:32,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:34,183 WARN L539 Checker$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 17:20:36,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:38,236 WARN L539 Checker$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 17:20:40,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:42,323 WARN L539 Checker$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 17:20:44,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:46,419 WARN L539 Checker$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 17:20:48,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:50,439 WARN L539 Checker$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 17:20:52,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:54,468 WARN L539 Checker$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 17:20:56,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:20:58,510 WARN L539 Checker$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 17:21:00,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:02,530 WARN L539 Checker$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 17:21:04,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:06,577 WARN L539 Checker$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 17:21:08,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:10,620 WARN L539 Checker$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 17:21:12,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:14,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:17,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:19,007 WARN L539 Checker$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 17:21:21,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:23,117 WARN L539 Checker$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 17:21:25,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:27,129 WARN L539 Checker$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 17:21:29,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:31,496 WARN L539 Checker$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 17:21:33,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:35,517 WARN L539 Checker$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 17:21:37,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:39,595 WARN L539 Checker$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 17:21:41,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:43,645 WARN L539 Checker$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 17:21:46,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:48,513 WARN L539 Checker$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 17:21:50,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:21:56,571 WARN L539 Checker$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 17:21:58,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:00,597 WARN L539 Checker$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 17:22:02,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:06,842 WARN L539 Checker$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 17:22:08,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:10,912 WARN L539 Checker$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 17:22:12,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:14,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:16,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:18,519 WARN L539 Checker$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 17:22:20,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:22,552 WARN L539 Checker$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 17:22:24,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:26,682 WARN L539 Checker$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 17:22:28,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:30,692 WARN L539 Checker$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 17:22:32,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:34,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:36,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:38,656 WARN L539 Checker$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 17:22:40,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:44,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:46,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:48,539 WARN L539 Checker$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 17:22:49,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:51,639 WARN L539 Checker$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 17:22:54,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:22:56,094 WARN L539 Checker$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 17:22:58,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:00,147 WARN L539 Checker$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 17:23:02,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:04,197 WARN L539 Checker$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 17:23:06,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:08,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:10,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:12,311 WARN L539 Checker$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 17:23:14,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:16,338 WARN L539 Checker$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 17:23:18,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:20,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:22,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:24,393 WARN L539 Checker$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 17:23:26,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:28,455 WARN L539 Checker$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 17:23:30,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:32,515 WARN L539 Checker$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 17:23:34,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:36,537 WARN L539 Checker$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 17:23:38,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:40,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:42,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:44,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:46,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:48,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:50,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:52,372 WARN L539 Checker$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 17:23:54,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:56,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:23:58,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:01,046 WARN L539 Checker$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 17:24:02,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:04,910 WARN L539 Checker$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 17:24:06,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:08,983 WARN L539 Checker$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 17:24:11,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:13,086 WARN L539 Checker$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 17:24:15,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:17,828 WARN L539 Checker$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 17:24:19,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:21,890 WARN L539 Checker$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 17:24:23,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:26,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:28,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:30,107 WARN L539 Checker$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 17:24:32,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:34,177 WARN L539 Checker$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 17:24:36,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:38,654 WARN L539 Checker$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 17:24:40,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:42,832 WARN L539 Checker$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 17:24:44,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:46,869 WARN L539 Checker$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 17:24:48,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:50,950 WARN L539 Checker$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 17:24:52,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:54,536 WARN L539 Checker$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 17:24:56,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:24:58,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:25:00,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:25:02,615 WARN L539 Checker$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 17:25:02,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:02,617 INFO L93 Difference]: Finished difference Result 553 states and 686 transitions. [2022-11-21 17:25:02,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:25:02,618 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.5) internal successors, (143), 23 states have internal predecessors, (143), 10 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) Word has length 133 [2022-11-21 17:25:02,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:02,621 INFO L225 Difference]: With dead ends: 553 [2022-11-21 17:25:02,621 INFO L226 Difference]: Without dead ends: 423 [2022-11-21 17:25:02,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 190 SyntacticMatches, 15 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 42.2s TimeCoverageRelationStatistics Valid=238, Invalid=1391, Unknown=15, NotChecked=78, Total=1722 [2022-11-21 17:25:02,624 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 542 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 3282 mSolverCounterSat, 327 mSolverCounterUnsat, 146 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 297.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 4032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 3282 IncrementalHoareTripleChecker+Invalid, 146 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 298.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:02,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 890 Invalid, 4032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 3282 Invalid, 146 Unknown, 277 Unchecked, 298.1s Time] [2022-11-21 17:25:02,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-21 17:25:02,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 332. [2022-11-21 17:25:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 240 states have (on average 1.1458333333333333) internal successors, (275), 245 states have internal predecessors, (275), 59 states have call successors, (59), 29 states have call predecessors, (59), 32 states have return successors, (63), 57 states have call predecessors, (63), 57 states have call successors, (63) [2022-11-21 17:25:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 397 transitions. [2022-11-21 17:25:02,661 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 397 transitions. Word has length 133 [2022-11-21 17:25:02,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:02,661 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 397 transitions. [2022-11-21 17:25:02,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.5) internal successors, (143), 23 states have internal predecessors, (143), 10 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-21 17:25:02,662 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 397 transitions. [2022-11-21 17:25:02,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-21 17:25:02,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:02,664 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:25:02,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 17:25:02,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 17:25:02,876 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:02,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:02,876 INFO L85 PathProgramCache]: Analyzing trace with hash 146116897, now seen corresponding path program 1 times [2022-11-21 17:25:02,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:02,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164157939] [2022-11-21 17:25:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:02,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:25:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:25:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:25:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:25:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:25:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:25:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:25:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:25:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:25:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 17:25:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 17:25:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 17:25:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 17:25:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 17:25:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-21 17:25:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 17:25:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:25:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-21 17:25:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-21 17:25:03,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:03,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164157939] [2022-11-21 17:25:03,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164157939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:03,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:03,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:25:03,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778792321] [2022-11-21 17:25:03,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:03,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:25:03,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:03,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:25:03,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:25:03,882 INFO L87 Difference]: Start difference. First operand 332 states and 397 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-21 17:25:05,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:05,005 INFO L93 Difference]: Finished difference Result 480 states and 577 transitions. [2022-11-21 17:25:05,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:25:05,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 182 [2022-11-21 17:25:05,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:05,008 INFO L225 Difference]: With dead ends: 480 [2022-11-21 17:25:05,008 INFO L226 Difference]: Without dead ends: 352 [2022-11-21 17:25:05,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:25:05,009 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 232 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:05,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 458 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 17:25:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-21 17:25:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 337. [2022-11-21 17:25:05,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 244 states have (on average 1.1434426229508197) internal successors, (279), 249 states have internal predecessors, (279), 59 states have call successors, (59), 29 states have call predecessors, (59), 33 states have return successors, (64), 58 states have call predecessors, (64), 57 states have call successors, (64) [2022-11-21 17:25:05,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 402 transitions. [2022-11-21 17:25:05,049 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 402 transitions. Word has length 182 [2022-11-21 17:25:05,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:05,049 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 402 transitions. [2022-11-21 17:25:05,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-21 17:25:05,050 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 402 transitions. [2022-11-21 17:25:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-21 17:25:05,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:05,051 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:25:05,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:25:05,052 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:05,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:05,052 INFO L85 PathProgramCache]: Analyzing trace with hash -561203934, now seen corresponding path program 1 times [2022-11-21 17:25:05,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:05,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013254628] [2022-11-21 17:25:05,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:05,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:25:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:25:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:25:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:25:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:25:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:25:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:25:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:25:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:25:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 17:25:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 17:25:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 17:25:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 17:25:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 17:25:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 17:25:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-21 17:25:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 17:25:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:25:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-21 17:25:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-21 17:25:06,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:06,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013254628] [2022-11-21 17:25:06,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013254628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:06,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:06,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:25:06,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499473401] [2022-11-21 17:25:06,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:06,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:25:06,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:06,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:25:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:25:06,753 INFO L87 Difference]: Start difference. First operand 337 states and 402 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (26), 6 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-21 17:25:07,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:07,920 INFO L93 Difference]: Finished difference Result 477 states and 573 transitions. [2022-11-21 17:25:07,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:25:07,923 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (26), 6 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 188 [2022-11-21 17:25:07,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:07,925 INFO L225 Difference]: With dead ends: 477 [2022-11-21 17:25:07,925 INFO L226 Difference]: Without dead ends: 333 [2022-11-21 17:25:07,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:25:07,927 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 171 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:07,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 530 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 17:25:07,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-21 17:25:07,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 326. [2022-11-21 17:25:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 236 states have (on average 1.1398305084745763) internal successors, (269), 241 states have internal predecessors, (269), 58 states have call successors, (58), 28 states have call predecessors, (58), 31 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2022-11-21 17:25:07,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 389 transitions. [2022-11-21 17:25:07,960 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 389 transitions. Word has length 188 [2022-11-21 17:25:07,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:07,960 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 389 transitions. [2022-11-21 17:25:07,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (26), 6 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-21 17:25:07,961 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 389 transitions. [2022-11-21 17:25:07,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-21 17:25:07,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:07,963 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:25:07,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:25:07,963 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:07,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:07,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1051134539, now seen corresponding path program 1 times [2022-11-21 17:25:07,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:07,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235941619] [2022-11-21 17:25:07,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:07,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:08,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:25:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:25:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:25:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:08,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:08,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:25:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:08,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:25:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:08,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:25:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:08,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:08,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:25:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:08,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:25:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:08,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:25:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 17:25:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 17:25:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 17:25:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 17:25:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 17:25:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 17:25:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-21 17:25:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 17:25:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:25:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-21 17:25:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-11-21 17:25:09,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:09,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235941619] [2022-11-21 17:25:09,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235941619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:09,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:09,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 17:25:09,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346835970] [2022-11-21 17:25:09,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:09,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 17:25:09,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:09,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 17:25:09,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:25:09,242 INFO L87 Difference]: Start difference. First operand 326 states and 389 transitions. Second operand has 11 states, 10 states have (on average 7.9) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (26), 5 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 17:25:10,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:10,398 INFO L93 Difference]: Finished difference Result 353 states and 421 transitions. [2022-11-21 17:25:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:25:10,399 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.9) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (26), 5 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 193 [2022-11-21 17:25:10,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:10,401 INFO L225 Difference]: With dead ends: 353 [2022-11-21 17:25:10,401 INFO L226 Difference]: Without dead ends: 351 [2022-11-21 17:25:10,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:25:10,402 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 160 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:10,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 630 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 17:25:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-21 17:25:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 339. [2022-11-21 17:25:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 245 states have (on average 1.1346938775510205) internal successors, (278), 252 states have internal predecessors, (278), 59 states have call successors, (59), 29 states have call predecessors, (59), 34 states have return successors, (69), 57 states have call predecessors, (69), 57 states have call successors, (69) [2022-11-21 17:25:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 406 transitions. [2022-11-21 17:25:10,440 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 406 transitions. Word has length 193 [2022-11-21 17:25:10,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:10,440 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 406 transitions. [2022-11-21 17:25:10,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.9) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (26), 5 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 17:25:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 406 transitions. [2022-11-21 17:25:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-21 17:25:10,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:10,442 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:10,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 17:25:10,443 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:10,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:10,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1618282863, now seen corresponding path program 1 times [2022-11-21 17:25:10,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:10,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111020815] [2022-11-21 17:25:10,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:10,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:25:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:25:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:25:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:25:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:25:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:25:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:25:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:25:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:25:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 17:25:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 17:25:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 17:25:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 17:25:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 17:25:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 17:25:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-21 17:25:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:25:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 17:25:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:25:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-21 17:25:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2022-11-21 17:25:11,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:11,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111020815] [2022-11-21 17:25:11,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111020815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:25:11,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752118532] [2022-11-21 17:25:11,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:11,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:25:11,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:25:11,863 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:25:11,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 17:25:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:12,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-21 17:25:12,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:25:12,816 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 17:25:14,031 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 18 treesize of output 10 [2022-11-21 17:25:14,037 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 16 treesize of output 8 [2022-11-21 17:25:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-21 17:25:14,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:25:14,443 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 35 treesize of output 27 [2022-11-21 17:25:14,744 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-21 17:25:14,745 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 17:25:14,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-21 17:25:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-11-21 17:25:15,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752118532] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:25:15,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:25:15,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 13] total 34 [2022-11-21 17:25:15,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393362410] [2022-11-21 17:25:15,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:25:15,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-21 17:25:15,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:15,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-21 17:25:15,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 17:25:15,093 INFO L87 Difference]: Start difference. First operand 339 states and 406 transitions. Second operand has 34 states, 34 states have (on average 6.088235294117647) internal successors, (207), 27 states have internal predecessors, (207), 12 states have call successors, (68), 8 states have call predecessors, (68), 9 states have return successors, (62), 13 states have call predecessors, (62), 12 states have call successors, (62) [2022-11-21 17:25:17,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:25:19,735 WARN L539 Checker$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 17:25:21,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:25:24,037 WARN L539 Checker$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 17:25:27,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:25:29,898 WARN L539 Checker$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 17:25:31,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:25:34,066 WARN L539 Checker$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 17:25:36,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:25:38,501 WARN L539 Checker$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 17:25:40,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:25:43,932 WARN L539 Checker$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 17:25:45,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:25:48,271 WARN L539 Checker$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 17:25:50,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:25:52,537 WARN L539 Checker$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 17:25:54,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:25:56,552 WARN L539 Checker$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 17:25:58,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:26:00,790 WARN L539 Checker$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 17:26:02,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:26:04,875 WARN L539 Checker$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 17:26:06,876 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 17:26:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:08,501 INFO L93 Difference]: Finished difference Result 654 states and 800 transitions. [2022-11-21 17:26:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 17:26:08,502 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.088235294117647) internal successors, (207), 27 states have internal predecessors, (207), 12 states have call successors, (68), 8 states have call predecessors, (68), 9 states have return successors, (62), 13 states have call predecessors, (62), 12 states have call successors, (62) Word has length 197 [2022-11-21 17:26:08,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:08,504 INFO L225 Difference]: With dead ends: 654 [2022-11-21 17:26:08,504 INFO L226 Difference]: Without dead ends: 402 [2022-11-21 17:26:08,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 426 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=647, Invalid=4045, Unknown=0, NotChecked=0, Total=4692 [2022-11-21 17:26:08,506 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 656 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 4303 mSolverCounterSat, 351 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 4677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 4303 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:08,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1036 Invalid, 4677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 4303 Invalid, 23 Unknown, 0 Unchecked, 51.2s Time] [2022-11-21 17:26:08,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-21 17:26:08,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 322. [2022-11-21 17:26:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 229 states have (on average 1.091703056768559) internal successors, (250), 234 states have internal predecessors, (250), 57 states have call successors, (57), 31 states have call predecessors, (57), 35 states have return successors, (65), 56 states have call predecessors, (65), 55 states have call successors, (65) [2022-11-21 17:26:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 372 transitions. [2022-11-21 17:26:08,557 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 372 transitions. Word has length 197 [2022-11-21 17:26:08,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:08,557 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 372 transitions. [2022-11-21 17:26:08,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.088235294117647) internal successors, (207), 27 states have internal predecessors, (207), 12 states have call successors, (68), 8 states have call predecessors, (68), 9 states have return successors, (62), 13 states have call predecessors, (62), 12 states have call successors, (62) [2022-11-21 17:26:08,558 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 372 transitions. [2022-11-21 17:26:08,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-21 17:26:08,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:08,559 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:26:08,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-21 17:26:08,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:26:08,771 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:26:08,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:08,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2143918970, now seen corresponding path program 1 times [2022-11-21 17:26:08,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:08,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736920991] [2022-11-21 17:26:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:08,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:26:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:26:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:26:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:26:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:26:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:26:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:26:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:26:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:26:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:26:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:26:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 17:26:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 17:26:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:26:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:26:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 17:26:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 17:26:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 17:26:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:26:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 17:26:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:14,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:26:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:15,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-21 17:26:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:15,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:26:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:15,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:26:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:15,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 17:26:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:15,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:26:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:15,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-21 17:26:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 78 proven. 20 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-11-21 17:26:15,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:26:15,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736920991] [2022-11-21 17:26:15,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736920991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:26:15,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689856519] [2022-11-21 17:26:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:15,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:26:15,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:26:15,538 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:26:15,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-21 17:26:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:16,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-21 17:26:16,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:26:16,485 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 17:26:18,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:26:18,831 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 31 treesize of output 31 [2022-11-21 17:26:18,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-21 17:26:21,006 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_9| Int) (|ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) 16))) (and (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_9|) 16)) (not (= (mod .cse0 18446744073709551616) 0)) (<= (+ 2 |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_9|) |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|)))) is different from true [2022-11-21 17:26:21,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:26:21,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2022-11-21 17:26:23,866 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_11| Int) (|ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) 16))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_11|) 16) .cse0) (not (= (mod .cse0 18446744073709551616) 0)) (<= (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_11| 2) |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|)))) is different from true [2022-11-21 17:26:30,675 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 86 proven. 93 refuted. 36 times theorem prover too weak. 60 trivial. 57 not checked. [2022-11-21 17:26:30,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:26:31,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689856519] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:26:31,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:26:31,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 23] total 49 [2022-11-21 17:26:31,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826247052] [2022-11-21 17:26:31,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:26:31,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-21 17:26:31,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:26:31,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-21 17:26:31,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2395, Unknown=2, NotChecked=198, Total=2756 [2022-11-21 17:26:31,372 INFO L87 Difference]: Start difference. First operand 322 states and 372 transitions. Second operand has 49 states, 44 states have (on average 4.454545454545454) internal successors, (196), 41 states have internal predecessors, (196), 23 states have call successors, (50), 10 states have call predecessors, (50), 14 states have return successors, (48), 25 states have call predecessors, (48), 22 states have call successors, (48) [2022-11-21 17:26:33,956 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 17:26:36,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:26:38,840 WARN L539 Checker$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 17:26:40,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:26:43,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:26:47,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:26:49,275 WARN L539 Checker$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 17:26:51,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:26:55,858 WARN L539 Checker$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 17:27:00,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:27:02,058 WARN L539 Checker$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 17:27:04,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:27:06,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:27:08,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:27:10,170 WARN L539 Checker$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 17:27:12,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:27:14,255 WARN L539 Checker$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 17:27:16,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:27:18,330 WARN L539 Checker$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 17:27:20,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:27:22,406 WARN L539 Checker$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 17:27:24,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:27:26,477 WARN L539 Checker$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 17:27:28,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:27:32,643 WARN L539 Checker$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 17:27:34,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:28:05,835 WARN L539 Checker$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 17:28:08,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:28:31,692 WARN L539 Checker$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 17:28:34,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:28:36,603 WARN L539 Checker$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 17:29:05,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:08,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:13,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:18,159 WARN L539 Checker$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 17:29:20,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:26,266 WARN L539 Checker$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 17:29:27,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:31,355 WARN L539 Checker$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 17:29:33,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:35,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:37,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:39,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:41,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:43,392 WARN L539 Checker$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 17:29:45,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:47,430 WARN L539 Checker$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 17:29:49,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:51,475 WARN L539 Checker$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 17:29:53,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:54,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:56,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:29:58,603 WARN L539 Checker$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 17:30:00,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:30:02,653 WARN L539 Checker$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 17:30:04,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:30:06,685 WARN L539 Checker$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 17:30:08,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:30:10,726 WARN L539 Checker$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 17:30:12,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:30:14,766 WARN L539 Checker$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 17:30:16,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:30:18,803 WARN L539 Checker$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 17:30:20,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:30:22,837 WARN L539 Checker$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 17:30:24,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:30:26,871 WARN L539 Checker$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 17:30:28,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:30:30,950 WARN L539 Checker$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 17:30:32,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:30:35,289 WARN L539 Checker$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 17:30:37,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:30:39,393 WARN L539 Checker$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 17:30:41,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:30:44,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:30:44,065 INFO L93 Difference]: Finished difference Result 753 states and 903 transitions. [2022-11-21 17:30:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-21 17:30:44,066 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 44 states have (on average 4.454545454545454) internal successors, (196), 41 states have internal predecessors, (196), 23 states have call successors, (50), 10 states have call predecessors, (50), 14 states have return successors, (48), 25 states have call predecessors, (48), 22 states have call successors, (48) Word has length 199 [2022-11-21 17:30:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:30:44,069 INFO L225 Difference]: With dead ends: 753 [2022-11-21 17:30:44,069 INFO L226 Difference]: Without dead ends: 635 [2022-11-21 17:30:44,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 254 SyntacticMatches, 10 SemanticMatches, 121 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3877 ImplicationChecksByTransitivity, 109.0s TimeCoverageRelationStatistics Valid=1350, Invalid=13146, Unknown=32, NotChecked=478, Total=15006 [2022-11-21 17:30:44,074 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1070 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 8392 mSolverCounterSat, 960 mSolverCounterUnsat, 109 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 10116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 8392 IncrementalHoareTripleChecker+Invalid, 109 IncrementalHoareTripleChecker+Unknown, 655 IncrementalHoareTripleChecker+Unchecked, 157.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:30:44,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 908 Invalid, 10116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [960 Valid, 8392 Invalid, 109 Unknown, 655 Unchecked, 157.2s Time] [2022-11-21 17:30:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-11-21 17:30:44,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 563. [2022-11-21 17:30:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 398 states have (on average 1.092964824120603) internal successors, (435), 410 states have internal predecessors, (435), 99 states have call successors, (99), 53 states have call predecessors, (99), 65 states have return successors, (130), 99 states have call predecessors, (130), 96 states have call successors, (130) [2022-11-21 17:30:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 664 transitions. [2022-11-21 17:30:44,162 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 664 transitions. Word has length 199 [2022-11-21 17:30:44,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:30:44,163 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 664 transitions. [2022-11-21 17:30:44,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 44 states have (on average 4.454545454545454) internal successors, (196), 41 states have internal predecessors, (196), 23 states have call successors, (50), 10 states have call predecessors, (50), 14 states have return successors, (48), 25 states have call predecessors, (48), 22 states have call successors, (48) [2022-11-21 17:30:44,164 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 664 transitions. [2022-11-21 17:30:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-21 17:30:44,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:30:44,166 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:44,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-21 17:30:44,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:30:44,377 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:30:44,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash -982458048, now seen corresponding path program 1 times [2022-11-21 17:30:44,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:44,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646489290] [2022-11-21 17:30:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:44,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:47,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:30:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:30:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:47,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:30:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:47,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:30:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:47,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:30:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:30:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:47,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:47,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:30:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:47,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:30:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:47,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:30:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 17:30:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 17:30:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 17:30:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 17:30:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 17:30:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 17:30:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-21 17:30:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 17:30:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:30:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-21 17:30:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-21 17:30:48,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:48,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646489290] [2022-11-21 17:30:48,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646489290] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:30:48,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018953854] [2022-11-21 17:30:48,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:48,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:30:48,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:30:48,482 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:30:48,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f76bb06-c2a8-4674-83e5-d861d820529c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-21 17:30:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:49,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-21 17:30:49,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:30:49,461 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 17:30:50,232 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 20 treesize of output 8 [2022-11-21 17:30:50,973 INFO L321 Elim1Store]: treesize reduction 132, result has 21.0 percent of original size [2022-11-21 17:30:50,974 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 41 treesize of output 76 [2022-11-21 17:30:52,555 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2022-11-21 17:30:52,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 59 [2022-11-21 17:30:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 19 proven. 277 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-21 17:30:54,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:30:57,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018953854] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:30:57,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:30:57,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 36 [2022-11-21 17:30:57,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289671536] [2022-11-21 17:30:57,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:30:57,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-21 17:30:57,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-21 17:30:57,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1654, Unknown=0, NotChecked=0, Total=1806 [2022-11-21 17:30:57,158 INFO L87 Difference]: Start difference. First operand 563 states and 664 transitions. Second operand has 36 states, 36 states have (on average 5.694444444444445) internal successors, (205), 32 states have internal predecessors, (205), 14 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (48), 15 states have call predecessors, (48), 13 states have call successors, (48) [2022-11-21 17:31:02,683 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 17:31:04,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:07,715 WARN L539 Checker$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 17:31:11,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:13,612 WARN L539 Checker$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 17:31:16,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:18,661 WARN L539 Checker$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 17:31:21,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:23,111 WARN L539 Checker$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 17:31:25,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:31,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:33,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:34,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:36,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:37,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:38,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:40,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:42,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:43,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:45,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:46,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 17:31:47,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]