./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:55:14,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:55:14,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:55:14,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:55:14,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:55:14,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:55:14,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:55:14,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:55:14,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:55:14,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:55:14,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:55:14,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:55:14,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:55:14,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:55:14,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:55:14,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:55:14,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:55:14,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:55:14,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:55:14,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:55:14,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:55:14,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:55:14,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:55:14,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:55:14,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:55:14,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:55:14,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:55:14,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:55:14,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:55:14,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:55:14,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:55:14,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:55:14,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:55:14,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:55:14,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:55:14,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:55:14,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:55:14,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:55:14,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:55:14,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:55:14,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:55:14,952 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:55:14,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:55:14,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:55:14,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:55:14,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:55:14,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:55:14,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:55:14,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:55:14,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:55:14,993 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:55:14,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:55:14,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:55:14,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:55:14,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:55:14,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:55:14,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:55:14,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:55:14,996 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:55:14,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:55:14,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:55:14,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:55:14,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:55:14,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:55:14,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:55:14,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:55:14,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:55:14,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:55:14,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:55:14,998 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:55:14,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:55:14,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:55:14,999 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_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 [2022-11-16 11:55:15,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:55:15,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:55:15,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:55:15,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:55:15,388 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:55:15,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2022-11-16 11:55:15,456 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/data/e17100d90/5ef07fe6dabe481ba609d7752636028a/FLAG931434ffe [2022-11-16 11:55:16,412 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:55:16,412 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2022-11-16 11:55:16,459 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/data/e17100d90/5ef07fe6dabe481ba609d7752636028a/FLAG931434ffe [2022-11-16 11:55:16,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/data/e17100d90/5ef07fe6dabe481ba609d7752636028a [2022-11-16 11:55:16,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:55:16,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:55:16,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:55:16,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:55:16,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:55:16,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:55:16" (1/1) ... [2022-11-16 11:55:16,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47938f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:16, skipping insertion in model container [2022-11-16 11:55:16,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:55:16" (1/1) ... [2022-11-16 11:55:16,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:55:16,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:55:17,359 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2022-11-16 11:55:17,367 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2022-11-16 11:55:18,604 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:18,606 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:18,607 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:18,608 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:18,609 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:18,635 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:18,638 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:18,640 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:18,643 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,152 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:55:19,154 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:55:19,156 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:55:19,157 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:55:19,163 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:55:19,164 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:55:19,168 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:55:19,169 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:55:19,171 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:55:19,173 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:55:19,349 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:55:19,470 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,470 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:55:19,706 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:55:19,733 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2022-11-16 11:55:19,734 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2022-11-16 11:55:19,776 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,778 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,779 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,780 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,781 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,794 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,795 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,799 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,799 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,849 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:55:19,850 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:55:19,851 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:55:19,851 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:55:19,852 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:55:19,853 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:55:19,853 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:55:19,854 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:55:19,854 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:55:19,857 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:55:19,886 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:55:19,949 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,950 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:55:19,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:55:20,248 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:55:20,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:20 WrapperNode [2022-11-16 11:55:20,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:55:20,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:55:20,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:55:20,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:55:20,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:20" (1/1) ... [2022-11-16 11:55:20,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:20" (1/1) ... [2022-11-16 11:55:20,454 INFO L138 Inliner]: procedures = 691, calls = 2649, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 829 [2022-11-16 11:55:20,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:55:20,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:55:20,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:55:20,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:55:20,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:20" (1/1) ... [2022-11-16 11:55:20,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:20" (1/1) ... [2022-11-16 11:55:20,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:20" (1/1) ... [2022-11-16 11:55:20,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:20" (1/1) ... [2022-11-16 11:55:20,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:20" (1/1) ... [2022-11-16 11:55:20,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:20" (1/1) ... [2022-11-16 11:55:20,557 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:20" (1/1) ... [2022-11-16 11:55:20,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:20" (1/1) ... [2022-11-16 11:55:20,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:55:20,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:55:20,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:55:20,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:55:20,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:20" (1/1) ... [2022-11-16 11:55:20,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:55:20,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:55:20,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:55:20,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:55:20,677 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-16 11:55:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-16 11:55:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:55:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 11:55:20,679 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 11:55:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:55:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2022-11-16 11:55:20,679 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2022-11-16 11:55:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:55:20,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:55:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:55:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:55:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-16 11:55:20,682 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-16 11:55:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:55:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:55:20,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:55:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 11:55:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 11:55:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-16 11:55:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-16 11:55:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:55:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:55:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:55:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:55:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:55:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:55:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-16 11:55:20,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-16 11:55:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lookup [2022-11-16 11:55:20,687 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lookup [2022-11-16 11:55:20,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:55:21,097 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:55:21,099 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:55:22,761 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:55:22,774 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:55:22,774 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:55:22,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:55:22 BoogieIcfgContainer [2022-11-16 11:55:22,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:55:22,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:55:22,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:55:22,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:55:22,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:55:16" (1/3) ... [2022-11-16 11:55:22,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b5cb8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:55:22, skipping insertion in model container [2022-11-16 11:55:22,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:20" (2/3) ... [2022-11-16 11:55:22,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b5cb8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:55:22, skipping insertion in model container [2022-11-16 11:55:22,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:55:22" (3/3) ... [2022-11-16 11:55:22,788 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lookup_harness.i [2022-11-16 11:55:22,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:55:22,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:55:22,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:55:22,905 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;@4c9950fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:55:22,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:55:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 80 states have (on average 1.2625) internal successors, (101), 81 states have internal predecessors, (101), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-16 11:55:22,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 11:55:22,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:55:22,929 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:22,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:55:22,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:22,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1628753842, now seen corresponding path program 1 times [2022-11-16 11:55:22,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:22,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058295366] [2022-11-16 11:55:22,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:22,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:55:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:55:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:55:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:55:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:55:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 11:55:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:55:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:55:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:55:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 11:55:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:55:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:55:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:55:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:55:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 11:55:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-16 11:55:23,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:23,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058295366] [2022-11-16 11:55:23,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058295366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:23,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:23,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:55:23,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082774431] [2022-11-16 11:55:23,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:23,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:55:23,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:24,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:55:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:55:24,019 INFO L87 Difference]: Start difference. First operand has 133 states, 80 states have (on average 1.2625) internal successors, (101), 81 states have internal predecessors, (101), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 11:55:24,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:55:24,531 INFO L93 Difference]: Finished difference Result 265 states and 391 transitions. [2022-11-16 11:55:24,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:55:24,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 95 [2022-11-16 11:55:24,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:55:24,543 INFO L225 Difference]: With dead ends: 265 [2022-11-16 11:55:24,544 INFO L226 Difference]: Without dead ends: 130 [2022-11-16 11:55:24,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:55:24,551 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 78 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:55:24,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 136 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:55:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-16 11:55:24,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2022-11-16 11:55:24,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 76 states have internal predecessors, (92), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-16 11:55:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 173 transitions. [2022-11-16 11:55:24,608 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 173 transitions. Word has length 95 [2022-11-16 11:55:24,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:55:24,609 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 173 transitions. [2022-11-16 11:55:24,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 11:55:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 173 transitions. [2022-11-16 11:55:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 11:55:24,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:55:24,613 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:24,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:55:24,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:55:24,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:24,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1573250628, now seen corresponding path program 1 times [2022-11-16 11:55:24,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:24,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520262128] [2022-11-16 11:55:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:24,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:55:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:55:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:55:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:55:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:55:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 11:55:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:55:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:55:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:55:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 11:55:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:55:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:55:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:55:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:55:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 11:55:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,574 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-16 11:55:25,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:25,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520262128] [2022-11-16 11:55:25,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520262128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:55:25,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998122065] [2022-11-16 11:55:25,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:25,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:55:25,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:55:25,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:55:25,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:55:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:26,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:55:26,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:55:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-16 11:55:26,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:55:26,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998122065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:26,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:55:26,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-16 11:55:26,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617690493] [2022-11-16 11:55:26,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:26,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:55:26,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:26,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:55:26,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:55:26,517 INFO L87 Difference]: Start difference. First operand 127 states and 173 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 11:55:26,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:55:26,811 INFO L93 Difference]: Finished difference Result 250 states and 347 transitions. [2022-11-16 11:55:26,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:55:26,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 95 [2022-11-16 11:55:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:55:26,819 INFO L225 Difference]: With dead ends: 250 [2022-11-16 11:55:26,823 INFO L226 Difference]: Without dead ends: 130 [2022-11-16 11:55:26,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:55:26,830 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 187 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:55:26,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 366 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:55:26,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-16 11:55:26,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-16 11:55:26,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 41 states have call successors, (41), 10 states have call predecessors, (41), 11 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2022-11-16 11:55:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 183 transitions. [2022-11-16 11:55:26,863 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 183 transitions. Word has length 95 [2022-11-16 11:55:26,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:55:26,865 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 183 transitions. [2022-11-16 11:55:26,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 11:55:26,865 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 183 transitions. [2022-11-16 11:55:26,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-16 11:55:26,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:55:26,873 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:26,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:55:27,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:55:27,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:55:27,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:27,083 INFO L85 PathProgramCache]: Analyzing trace with hash -513109833, now seen corresponding path program 1 times [2022-11-16 11:55:27,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:27,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349709663] [2022-11-16 11:55:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:27,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:55:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:55:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:55:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:55:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:55:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:55:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:55:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:55:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:55:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:55:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:55:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:55:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:55:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:55:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:55:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-16 11:55:28,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:28,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349709663] [2022-11-16 11:55:28,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349709663] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:55:28,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111168373] [2022-11-16 11:55:28,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:28,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:55:28,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:55:28,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:55:28,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:55:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:29,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 2655 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:55:29,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:55:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 11:55:29,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:55:29,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111168373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:29,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:55:29,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-11-16 11:55:29,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865212179] [2022-11-16 11:55:29,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:29,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:55:29,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:29,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:55:29,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:55:29,471 INFO L87 Difference]: Start difference. First operand 130 states and 183 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-16 11:55:29,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:55:29,906 INFO L93 Difference]: Finished difference Result 210 states and 301 transitions. [2022-11-16 11:55:29,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:55:29,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 97 [2022-11-16 11:55:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:55:29,908 INFO L225 Difference]: With dead ends: 210 [2022-11-16 11:55:29,908 INFO L226 Difference]: Without dead ends: 130 [2022-11-16 11:55:29,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:55:29,910 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 204 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:55:29,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 636 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:55:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-16 11:55:29,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-16 11:55:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 41 states have call successors, (41), 10 states have call predecessors, (41), 11 states have return successors, (45), 40 states have call predecessors, (45), 40 states have call successors, (45) [2022-11-16 11:55:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 180 transitions. [2022-11-16 11:55:29,927 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 180 transitions. Word has length 97 [2022-11-16 11:55:29,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:55:29,928 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 180 transitions. [2022-11-16 11:55:29,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-16 11:55:29,928 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 180 transitions. [2022-11-16 11:55:29,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 11:55:29,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:55:29,930 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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] [2022-11-16 11:55:29,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:55:30,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:55:30,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:55:30,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash -199598313, now seen corresponding path program 2 times [2022-11-16 11:55:30,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:30,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834231419] [2022-11-16 11:55:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:30,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:55:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:55:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:55:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:55:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:55:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:55:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:55:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:55:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:55:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:55:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 11:55:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:55:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:55:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:55:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:30,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:55:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-16 11:55:31,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:31,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834231419] [2022-11-16 11:55:31,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834231419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:55:31,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456854298] [2022-11-16 11:55:31,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:55:31,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:55:31,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:55:31,011 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:55:31,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:55:31,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:55:31,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:55:31,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:55:31,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:55:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 11:55:31,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:55:31,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456854298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:31,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:55:31,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-11-16 11:55:31,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683474542] [2022-11-16 11:55:31,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:31,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:55:31,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:31,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:55:31,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:55:31,651 INFO L87 Difference]: Start difference. First operand 130 states and 180 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-16 11:55:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:55:31,765 INFO L93 Difference]: Finished difference Result 142 states and 201 transitions. [2022-11-16 11:55:31,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:55:31,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 101 [2022-11-16 11:55:31,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:55:31,770 INFO L225 Difference]: With dead ends: 142 [2022-11-16 11:55:31,771 INFO L226 Difference]: Without dead ends: 140 [2022-11-16 11:55:31,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:55:31,775 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 17 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:55:31,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1200 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:55:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-16 11:55:31,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2022-11-16 11:55:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 83 states have (on average 1.2048192771084338) internal successors, (100), 86 states have internal predecessors, (100), 42 states have call successors, (42), 11 states have call predecessors, (42), 13 states have return successors, (56), 41 states have call predecessors, (56), 41 states have call successors, (56) [2022-11-16 11:55:31,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 198 transitions. [2022-11-16 11:55:31,805 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 198 transitions. Word has length 101 [2022-11-16 11:55:31,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:55:31,805 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 198 transitions. [2022-11-16 11:55:31,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-16 11:55:31,806 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 198 transitions. [2022-11-16 11:55:31,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 11:55:31,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:55:31,812 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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] [2022-11-16 11:55:31,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:55:32,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:55:32,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:55:32,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:32,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1826692575, now seen corresponding path program 1 times [2022-11-16 11:55:32,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:32,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732257542] [2022-11-16 11:55:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:32,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:55:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:55:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:55:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:55:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:55:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:55:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:55:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:55:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:55:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:55:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 11:55:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:55:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:55:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:55:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:55:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-16 11:55:32,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:32,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732257542] [2022-11-16 11:55:32,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732257542] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:55:32,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060158197] [2022-11-16 11:55:32,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:32,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:55:32,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:55:32,787 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:55:32,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:55:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:33,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:55:33,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:55:33,541 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 11:55:33,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:55:33,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060158197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:33,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:55:33,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-11-16 11:55:33,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828108599] [2022-11-16 11:55:33,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:33,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:55:33,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:33,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:55:33,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:55:33,544 INFO L87 Difference]: Start difference. First operand 139 states and 198 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-16 11:55:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:55:33,930 INFO L93 Difference]: Finished difference Result 272 states and 404 transitions. [2022-11-16 11:55:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:55:33,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 101 [2022-11-16 11:55:33,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:55:33,933 INFO L225 Difference]: With dead ends: 272 [2022-11-16 11:55:33,934 INFO L226 Difference]: Without dead ends: 168 [2022-11-16 11:55:33,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:55:33,935 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 249 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:55:33,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 624 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:55:33,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-16 11:55:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-11-16 11:55:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 100 states have internal predecessors, (119), 56 states have call successors, (56), 12 states have call predecessors, (56), 14 states have return successors, (74), 55 states have call predecessors, (74), 55 states have call successors, (74) [2022-11-16 11:55:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 249 transitions. [2022-11-16 11:55:33,956 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 249 transitions. Word has length 101 [2022-11-16 11:55:33,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:55:33,956 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 249 transitions. [2022-11-16 11:55:33,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-16 11:55:33,957 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 249 transitions. [2022-11-16 11:55:33,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-16 11:55:33,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:55:33,958 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:33,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:55:34,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:55:34,168 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:55:34,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:34,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1515977756, now seen corresponding path program 1 times [2022-11-16 11:55:34,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:34,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649174295] [2022-11-16 11:55:34,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:34,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:55:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:55:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:55:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:55:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:55:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:55:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:55:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:55:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:55:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:55:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 11:55:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:55:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:55:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:55:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 11:55:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-16 11:55:35,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:35,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649174295] [2022-11-16 11:55:35,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649174295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:35,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:35,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:35,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081619785] [2022-11-16 11:55:35,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:35,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:35,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:35,287 INFO L87 Difference]: Start difference. First operand 168 states and 249 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-16 11:55:36,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:55:36,252 INFO L93 Difference]: Finished difference Result 181 states and 264 transitions. [2022-11-16 11:55:36,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:36,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 103 [2022-11-16 11:55:36,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:55:36,255 INFO L225 Difference]: With dead ends: 181 [2022-11-16 11:55:36,256 INFO L226 Difference]: Without dead ends: 179 [2022-11-16 11:55:36,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:55:36,257 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 97 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:55:36,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 462 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:55:36,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-16 11:55:36,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 174. [2022-11-16 11:55:36,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 100 states have (on average 1.22) internal successors, (122), 103 states have internal predecessors, (122), 58 states have call successors, (58), 13 states have call predecessors, (58), 15 states have return successors, (76), 57 states have call predecessors, (76), 57 states have call successors, (76) [2022-11-16 11:55:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 256 transitions. [2022-11-16 11:55:36,290 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 256 transitions. Word has length 103 [2022-11-16 11:55:36,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:55:36,291 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 256 transitions. [2022-11-16 11:55:36,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-16 11:55:36,291 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 256 transitions. [2022-11-16 11:55:36,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 11:55:36,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:55:36,297 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:36,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:55:36,297 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:55:36,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:36,298 INFO L85 PathProgramCache]: Analyzing trace with hash 101250906, now seen corresponding path program 1 times [2022-11-16 11:55:36,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:36,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285701775] [2022-11-16 11:55:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:36,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:55:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:55:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:37,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:55:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:37,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:55:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:55:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:37,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:55:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:55:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:37,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:55:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:37,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:55:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:55:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:37,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 11:55:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:37,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:55:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:37,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:55:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:38,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:55:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:38,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 11:55:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:55:38,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:38,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285701775] [2022-11-16 11:55:38,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285701775] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:55:38,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125252055] [2022-11-16 11:55:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:38,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:55:38,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:55:38,253 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:55:38,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:55:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:38,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-16 11:55:38,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:55:38,867 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 10 treesize of output 8 [2022-11-16 11:55:39,283 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 39 treesize of output 34 [2022-11-16 11:55:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 48 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 11:55:41,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:55:46,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125252055] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:55:46,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:55:46,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18] total 25 [2022-11-16 11:55:46,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435913299] [2022-11-16 11:55:46,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:55:46,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:55:46,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:46,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:55:46,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2022-11-16 11:55:46,220 INFO L87 Difference]: Start difference. First operand 174 states and 256 transitions. Second operand has 25 states, 24 states have (on average 3.875) internal successors, (93), 22 states have internal predecessors, (93), 9 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (29), 8 states have call predecessors, (29), 7 states have call successors, (29) [2022-11-16 11:55:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:55:49,989 INFO L93 Difference]: Finished difference Result 443 states and 678 transitions. [2022-11-16 11:55:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 11:55:49,990 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.875) internal successors, (93), 22 states have internal predecessors, (93), 9 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (29), 8 states have call predecessors, (29), 7 states have call successors, (29) Word has length 107 [2022-11-16 11:55:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:55:49,993 INFO L225 Difference]: With dead ends: 443 [2022-11-16 11:55:49,993 INFO L226 Difference]: Without dead ends: 322 [2022-11-16 11:55:49,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 175 SyntacticMatches, 18 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=262, Invalid=1629, Unknown=1, NotChecked=0, Total=1892 [2022-11-16 11:55:49,996 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 257 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1018 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:55:49,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 882 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1431 Invalid, 0 Unknown, 1018 Unchecked, 1.8s Time] [2022-11-16 11:55:49,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-16 11:55:50,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 265. [2022-11-16 11:55:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 157 states have (on average 1.21656050955414) internal successors, (191), 162 states have internal predecessors, (191), 85 states have call successors, (85), 19 states have call predecessors, (85), 22 states have return successors, (118), 83 states have call predecessors, (118), 84 states have call successors, (118) [2022-11-16 11:55:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 394 transitions. [2022-11-16 11:55:50,046 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 394 transitions. Word has length 107 [2022-11-16 11:55:50,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:55:50,047 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 394 transitions. [2022-11-16 11:55:50,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.875) internal successors, (93), 22 states have internal predecessors, (93), 9 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (29), 8 states have call predecessors, (29), 7 states have call successors, (29) [2022-11-16 11:55:50,048 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 394 transitions. [2022-11-16 11:55:50,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 11:55:50,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:55:50,051 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:50,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:55:50,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 11:55:50,260 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:55:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:50,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1705417372, now seen corresponding path program 1 times [2022-11-16 11:55:50,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:50,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339318887] [2022-11-16 11:55:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:50,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:55:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:55:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:55:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:55:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:55:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:55:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:55:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:55:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:55:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:55:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 11:55:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:55:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:55:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:55:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 11:55:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:51,623 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-16 11:55:51,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:51,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339318887] [2022-11-16 11:55:51,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339318887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:55:51,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052907673] [2022-11-16 11:55:51,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:51,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:55:51,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:55:51,626 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:55:51,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:55:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:52,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-16 11:55:52,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:55:52,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:55:52,576 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 11:55:52,576 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 1 case distinctions, treesize of input 39 treesize of output 34 [2022-11-16 11:55:53,435 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 65 treesize of output 41 [2022-11-16 11:55:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 42 proven. 12 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-16 11:55:53,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:55:54,617 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:55:54,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-11-16 11:55:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-16 11:55:54,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052907673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:55:54,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:55:54,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 11] total 27 [2022-11-16 11:55:54,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910201824] [2022-11-16 11:55:54,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:55:54,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 11:55:54,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:54,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 11:55:54,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:55:54,655 INFO L87 Difference]: Start difference. First operand 265 states and 394 transitions. Second operand has 27 states, 26 states have (on average 4.0) internal successors, (104), 23 states have internal predecessors, (104), 11 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (39), 10 states have call predecessors, (39), 11 states have call successors, (39) [2022-11-16 11:56:00,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:00,956 INFO L93 Difference]: Finished difference Result 678 states and 1066 transitions. [2022-11-16 11:56:00,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-16 11:56:00,957 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.0) internal successors, (104), 23 states have internal predecessors, (104), 11 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (39), 10 states have call predecessors, (39), 11 states have call successors, (39) Word has length 107 [2022-11-16 11:56:00,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:00,961 INFO L225 Difference]: With dead ends: 678 [2022-11-16 11:56:00,961 INFO L226 Difference]: Without dead ends: 530 [2022-11-16 11:56:00,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 217 SyntacticMatches, 15 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=512, Invalid=3394, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 11:56:00,965 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 394 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 3377 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 4236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 3377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 520 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:00,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 652 Invalid, 4236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 3377 Invalid, 0 Unknown, 520 Unchecked, 4.1s Time] [2022-11-16 11:56:00,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-11-16 11:56:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 343. [2022-11-16 11:56:01,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 209 states have (on average 1.200956937799043) internal successors, (251), 213 states have internal predecessors, (251), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (146), 105 states have call predecessors, (146), 106 states have call successors, (146) [2022-11-16 11:56:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 504 transitions. [2022-11-16 11:56:01,056 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 504 transitions. Word has length 107 [2022-11-16 11:56:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:01,057 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 504 transitions. [2022-11-16 11:56:01,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.0) internal successors, (104), 23 states have internal predecessors, (104), 11 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (39), 10 states have call predecessors, (39), 11 states have call successors, (39) [2022-11-16 11:56:01,057 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 504 transitions. [2022-11-16 11:56:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-16 11:56:01,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:01,060 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:01,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 11:56:01,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:01,269 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:01,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:01,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1355654111, now seen corresponding path program 1 times [2022-11-16 11:56:01,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:01,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15316637] [2022-11-16 11:56:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:01,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:56:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:56:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:56:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:56:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:56:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:56:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:56:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:56:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:56:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 11:56:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:56:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:56:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:56:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 11:56:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-16 11:56:02,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:02,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15316637] [2022-11-16 11:56:02,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15316637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:02,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:02,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:56:02,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126869657] [2022-11-16 11:56:02,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:02,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:56:02,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:02,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:56:02,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:56:02,600 INFO L87 Difference]: Start difference. First operand 343 states and 504 transitions. Second operand has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-16 11:56:03,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:03,826 INFO L93 Difference]: Finished difference Result 382 states and 569 transitions. [2022-11-16 11:56:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:56:03,827 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 109 [2022-11-16 11:56:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:03,830 INFO L225 Difference]: With dead ends: 382 [2022-11-16 11:56:03,830 INFO L226 Difference]: Without dead ends: 380 [2022-11-16 11:56:03,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:56:03,832 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 109 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:03,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 578 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:56:03,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-16 11:56:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 351. [2022-11-16 11:56:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 216 states have (on average 1.1944444444444444) internal successors, (258), 221 states have internal predecessors, (258), 107 states have call successors, (107), 24 states have call predecessors, (107), 27 states have return successors, (168), 105 states have call predecessors, (168), 106 states have call successors, (168) [2022-11-16 11:56:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 533 transitions. [2022-11-16 11:56:03,901 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 533 transitions. Word has length 109 [2022-11-16 11:56:03,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:03,901 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 533 transitions. [2022-11-16 11:56:03,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-16 11:56:03,902 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 533 transitions. [2022-11-16 11:56:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-16 11:56:03,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:03,904 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:03,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:56:03,904 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:03,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:03,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2056718689, now seen corresponding path program 1 times [2022-11-16 11:56:03,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:03,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817273819] [2022-11-16 11:56:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:03,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:56:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:56:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:56:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:56:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:56:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:56:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:56:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:56:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:56:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 11:56:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:56:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:56:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:56:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 11:56:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-16 11:56:05,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:05,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817273819] [2022-11-16 11:56:05,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817273819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:05,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:05,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:56:05,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829760251] [2022-11-16 11:56:05,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:05,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:56:05,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:05,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:56:05,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:56:05,918 INFO L87 Difference]: Start difference. First operand 351 states and 533 transitions. Second operand has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-16 11:56:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:07,671 INFO L93 Difference]: Finished difference Result 380 states and 587 transitions. [2022-11-16 11:56:07,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:56:07,672 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 109 [2022-11-16 11:56:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:07,675 INFO L225 Difference]: With dead ends: 380 [2022-11-16 11:56:07,675 INFO L226 Difference]: Without dead ends: 378 [2022-11-16 11:56:07,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:56:07,676 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 127 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:07,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 680 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:56:07,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-16 11:56:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 344. [2022-11-16 11:56:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 210 states have (on average 1.2) internal successors, (252), 214 states have internal predecessors, (252), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (167), 105 states have call predecessors, (167), 106 states have call successors, (167) [2022-11-16 11:56:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 526 transitions. [2022-11-16 11:56:07,735 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 526 transitions. Word has length 109 [2022-11-16 11:56:07,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:07,735 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 526 transitions. [2022-11-16 11:56:07,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-16 11:56:07,736 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 526 transitions. [2022-11-16 11:56:07,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 11:56:07,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:07,738 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:07,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:56:07,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:07,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:07,739 INFO L85 PathProgramCache]: Analyzing trace with hash -905775483, now seen corresponding path program 1 times [2022-11-16 11:56:07,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:07,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377139195] [2022-11-16 11:56:07,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:07,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:56:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:56:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:56:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:56:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:56:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:56:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:56:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:56:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:56:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:56:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:56:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-16 11:56:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:56:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 11:56:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:56:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-16 11:56:09,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:09,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377139195] [2022-11-16 11:56:09,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377139195] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:56:09,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104661557] [2022-11-16 11:56:09,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:09,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:09,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:09,824 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:09,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:56:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:10,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 11:56:10,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:10,832 INFO L321 Elim1Store]: treesize reduction 51, result has 25.0 percent of original size [2022-11-16 11:56:10,833 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 39 treesize of output 44 [2022-11-16 11:56:10,957 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 11:56:10,958 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 43 treesize of output 23 [2022-11-16 11:56:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-16 11:56:11,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:56:11,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-16 11:56:11,472 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:56:11,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-11-16 11:56:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-16 11:56:11,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104661557] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:56:11,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:56:11,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 21 [2022-11-16 11:56:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055058763] [2022-11-16 11:56:11,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:56:11,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:56:11,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:11,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:56:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:56:11,505 INFO L87 Difference]: Start difference. First operand 344 states and 526 transitions. Second operand has 21 states, 20 states have (on average 4.45) internal successors, (89), 19 states have internal predecessors, (89), 10 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (31), 8 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-16 11:56:13,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:13,685 INFO L93 Difference]: Finished difference Result 568 states and 881 transitions. [2022-11-16 11:56:13,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:56:13,686 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.45) internal successors, (89), 19 states have internal predecessors, (89), 10 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (31), 8 states have call predecessors, (31), 10 states have call successors, (31) Word has length 118 [2022-11-16 11:56:13,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:13,689 INFO L225 Difference]: With dead ends: 568 [2022-11-16 11:56:13,689 INFO L226 Difference]: Without dead ends: 390 [2022-11-16 11:56:13,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 250 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2022-11-16 11:56:13,692 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 178 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:13,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 467 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1511 Invalid, 0 Unknown, 301 Unchecked, 1.7s Time] [2022-11-16 11:56:13,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-16 11:56:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 348. [2022-11-16 11:56:13,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 213 states have (on average 1.2018779342723005) internal successors, (256), 217 states have internal predecessors, (256), 107 states have call successors, (107), 25 states have call predecessors, (107), 27 states have return successors, (165), 105 states have call predecessors, (165), 106 states have call successors, (165) [2022-11-16 11:56:13,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 528 transitions. [2022-11-16 11:56:13,748 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 528 transitions. Word has length 118 [2022-11-16 11:56:13,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:13,749 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 528 transitions. [2022-11-16 11:56:13,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.45) internal successors, (89), 19 states have internal predecessors, (89), 10 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (31), 8 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-16 11:56:13,749 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 528 transitions. [2022-11-16 11:56:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-16 11:56:13,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:13,752 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:13,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:56:13,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:13,961 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:13,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:13,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1757380781, now seen corresponding path program 1 times [2022-11-16 11:56:13,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:13,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716937868] [2022-11-16 11:56:13,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:13,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:56:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:56:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:56:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:56:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:56:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:56:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:56:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:56:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:56:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:56:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:56:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:56:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-16 11:56:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 11:56:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-16 11:56:14,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:14,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716937868] [2022-11-16 11:56:14,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716937868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:56:14,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205854908] [2022-11-16 11:56:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:14,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:14,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:14,936 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:14,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:56:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:15,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:56:15,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-16 11:56:15,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:56:15,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205854908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:15,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:56:15,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2022-11-16 11:56:15,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660778340] [2022-11-16 11:56:15,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:15,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:56:15,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:15,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:56:15,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:56:15,632 INFO L87 Difference]: Start difference. First operand 348 states and 528 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 11:56:15,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:15,923 INFO L93 Difference]: Finished difference Result 646 states and 1016 transitions. [2022-11-16 11:56:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:56:15,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 113 [2022-11-16 11:56:15,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:15,927 INFO L225 Difference]: With dead ends: 646 [2022-11-16 11:56:15,927 INFO L226 Difference]: Without dead ends: 356 [2022-11-16 11:56:15,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:56:15,931 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 19 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:15,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 619 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-16 11:56:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-16 11:56:15,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 348. [2022-11-16 11:56:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 213 states have (on average 1.1830985915492958) internal successors, (252), 217 states have internal predecessors, (252), 107 states have call successors, (107), 25 states have call predecessors, (107), 27 states have return successors, (165), 105 states have call predecessors, (165), 106 states have call successors, (165) [2022-11-16 11:56:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 524 transitions. [2022-11-16 11:56:15,987 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 524 transitions. Word has length 113 [2022-11-16 11:56:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:15,987 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 524 transitions. [2022-11-16 11:56:15,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 11:56:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 524 transitions. [2022-11-16 11:56:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-16 11:56:15,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:15,990 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:16,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:56:16,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:56:16,205 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:16,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:16,206 INFO L85 PathProgramCache]: Analyzing trace with hash -888681782, now seen corresponding path program 2 times [2022-11-16 11:56:16,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:16,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381508559] [2022-11-16 11:56:16,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:16,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:56:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:56:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:56:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:56:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:56:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:56:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:56:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-16 11:56:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:56:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:56:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:56:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 11:56:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-16 11:56:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-16 11:56:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-16 11:56:17,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:17,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381508559] [2022-11-16 11:56:17,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381508559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:56:17,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617183699] [2022-11-16 11:56:17,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:56:17,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:17,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:17,320 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:17,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:56:18,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:56:18,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:56:18,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-16 11:56:18,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:18,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:56:18,694 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 11:56:18,695 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 1 case distinctions, treesize of input 31 treesize of output 30 [2022-11-16 11:56:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 74 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:56:19,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:56:20,592 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:56:20,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2022-11-16 11:56:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-16 11:56:20,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617183699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:56:20,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:56:20,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 13] total 34 [2022-11-16 11:56:20,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795215973] [2022-11-16 11:56:20,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:56:20,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 11:56:20,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:20,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 11:56:20,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:56:20,633 INFO L87 Difference]: Start difference. First operand 348 states and 524 transitions. Second operand has 34 states, 32 states have (on average 3.875) internal successors, (124), 29 states have internal predecessors, (124), 11 states have call successors, (41), 9 states have call predecessors, (41), 10 states have return successors, (37), 10 states have call predecessors, (37), 11 states have call successors, (37) [2022-11-16 11:56:24,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:24,433 INFO L93 Difference]: Finished difference Result 876 states and 1370 transitions. [2022-11-16 11:56:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 11:56:24,433 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 3.875) internal successors, (124), 29 states have internal predecessors, (124), 11 states have call successors, (41), 9 states have call predecessors, (41), 10 states have return successors, (37), 10 states have call predecessors, (37), 11 states have call successors, (37) Word has length 115 [2022-11-16 11:56:24,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:24,438 INFO L225 Difference]: With dead ends: 876 [2022-11-16 11:56:24,438 INFO L226 Difference]: Without dead ends: 595 [2022-11-16 11:56:24,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 235 SyntacticMatches, 9 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=403, Invalid=3629, Unknown=0, NotChecked=0, Total=4032 [2022-11-16 11:56:24,442 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 179 mSDsluCounter, 3867 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 4134 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1364 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:24,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 4134 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2315 Invalid, 0 Unknown, 1364 Unchecked, 2.2s Time] [2022-11-16 11:56:24,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-16 11:56:24,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 485. [2022-11-16 11:56:24,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 292 states have (on average 1.1917808219178083) internal successors, (348), 296 states have internal predecessors, (348), 158 states have call successors, (158), 31 states have call predecessors, (158), 34 states have return successors, (237), 157 states have call predecessors, (237), 157 states have call successors, (237) [2022-11-16 11:56:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 743 transitions. [2022-11-16 11:56:24,526 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 743 transitions. Word has length 115 [2022-11-16 11:56:24,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:24,527 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 743 transitions. [2022-11-16 11:56:24,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 3.875) internal successors, (124), 29 states have internal predecessors, (124), 11 states have call successors, (41), 9 states have call predecessors, (41), 10 states have return successors, (37), 10 states have call predecessors, (37), 11 states have call successors, (37) [2022-11-16 11:56:24,527 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 743 transitions. [2022-11-16 11:56:24,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-16 11:56:24,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:24,531 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:24,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:56:24,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:56:24,742 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:24,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:24,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1555832660, now seen corresponding path program 1 times [2022-11-16 11:56:24,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:24,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973799662] [2022-11-16 11:56:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:24,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:56:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:56:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:56:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:56:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:56:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:56:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 11:56:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:56:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:56:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:27,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:56:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:27,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:56:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:27,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:56:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:27,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:56:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:27,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:56:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:27,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-16 11:56:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:27,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:56:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:27,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-16 11:56:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:27,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-16 11:56:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 11:56:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:27,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-16 11:56:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 11 proven. 39 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 11:56:27,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:27,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973799662] [2022-11-16 11:56:27,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973799662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:56:27,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689800496] [2022-11-16 11:56:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:27,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:27,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:27,492 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:27,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:56:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:28,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-16 11:56:28,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:28,111 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 10 treesize of output 8 [2022-11-16 11:56:28,803 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1034 (Array Int Int))) (= (store |c_old(#memory_int)| |c_ensure_byte_cursor_has_allocated_buffer_member_#in~cursor.base| v_ArrVal_1034) |c_#memory_int|)) is different from true [2022-11-16 11:56:28,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-16 11:56:30,266 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 64 proven. 25 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-16 11:56:30,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:56:30,880 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1037 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#rhs~0#1.base| v_ArrVal_1037) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.offset|))) (<= .cse0 (* 18446744073709551616 (div .cse0 18446744073709551616))))) is different from false [2022-11-16 11:56:30,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689800496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:56:30,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:56:30,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 29 [2022-11-16 11:56:30,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505884684] [2022-11-16 11:56:30,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:56:30,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 11:56:30,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:30,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 11:56:30,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=821, Unknown=2, NotChecked=118, Total=1056 [2022-11-16 11:56:30,884 INFO L87 Difference]: Start difference. First operand 485 states and 743 transitions. Second operand has 29 states, 28 states have (on average 3.9642857142857144) internal successors, (111), 25 states have internal predecessors, (111), 11 states have call successors, (43), 8 states have call predecessors, (43), 8 states have return successors, (40), 10 states have call predecessors, (40), 11 states have call successors, (40) [2022-11-16 11:56:35,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:35,455 INFO L93 Difference]: Finished difference Result 1139 states and 1765 transitions. [2022-11-16 11:56:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:56:35,456 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.9642857142857144) internal successors, (111), 25 states have internal predecessors, (111), 11 states have call successors, (43), 8 states have call predecessors, (43), 8 states have return successors, (40), 10 states have call predecessors, (40), 11 states have call successors, (40) Word has length 145 [2022-11-16 11:56:35,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:35,462 INFO L225 Difference]: With dead ends: 1139 [2022-11-16 11:56:35,462 INFO L226 Difference]: Without dead ends: 783 [2022-11-16 11:56:35,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 238 SyntacticMatches, 26 SemanticMatches, 55 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1165 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=444, Invalid=2504, Unknown=30, NotChecked=214, Total=3192 [2022-11-16 11:56:35,467 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 467 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 4247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1172 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:35,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 470 Invalid, 4247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2561 Invalid, 0 Unknown, 1172 Unchecked, 3.0s Time] [2022-11-16 11:56:35,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-11-16 11:56:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 669. [2022-11-16 11:56:35,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 408 states have (on average 1.1764705882352942) internal successors, (480), 417 states have internal predecessors, (480), 211 states have call successors, (211), 44 states have call predecessors, (211), 49 states have return successors, (305), 207 states have call predecessors, (305), 210 states have call successors, (305) [2022-11-16 11:56:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 996 transitions. [2022-11-16 11:56:35,579 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 996 transitions. Word has length 145 [2022-11-16 11:56:35,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:35,580 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 996 transitions. [2022-11-16 11:56:35,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.9642857142857144) internal successors, (111), 25 states have internal predecessors, (111), 11 states have call successors, (43), 8 states have call predecessors, (43), 8 states have return successors, (40), 10 states have call predecessors, (40), 11 states have call successors, (40) [2022-11-16 11:56:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 996 transitions. [2022-11-16 11:56:35,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-16 11:56:35,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:35,584 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-16 11:56:35,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:56:35,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 11:56:35,793 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:35,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash 961140430, now seen corresponding path program 1 times [2022-11-16 11:56:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:35,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990202476] [2022-11-16 11:56:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:35,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:56:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:56:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:56:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:56:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:56:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:56:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:56:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:56:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:56:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 11:56:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:56:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:56:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:56:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 11:56:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-16 11:56:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-16 11:56:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-16 11:56:36,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:36,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990202476] [2022-11-16 11:56:36,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990202476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:36,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:36,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:56:36,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527850159] [2022-11-16 11:56:36,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:36,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:56:36,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:36,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:56:36,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:56:36,808 INFO L87 Difference]: Start difference. First operand 669 states and 996 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-16 11:56:37,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:37,852 INFO L93 Difference]: Finished difference Result 688 states and 1018 transitions. [2022-11-16 11:56:37,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:56:37,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 117 [2022-11-16 11:56:37,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:37,858 INFO L225 Difference]: With dead ends: 688 [2022-11-16 11:56:37,858 INFO L226 Difference]: Without dead ends: 686 [2022-11-16 11:56:37,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:56:37,862 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 95 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:37,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 453 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:56:37,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-11-16 11:56:37,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 677. [2022-11-16 11:56:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 411 states have (on average 1.1751824817518248) internal successors, (483), 420 states have internal predecessors, (483), 215 states have call successors, (215), 45 states have call predecessors, (215), 50 states have return successors, (309), 211 states have call predecessors, (309), 214 states have call successors, (309) [2022-11-16 11:56:37,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1007 transitions. [2022-11-16 11:56:37,977 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1007 transitions. Word has length 117 [2022-11-16 11:56:37,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:37,977 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1007 transitions. [2022-11-16 11:56:37,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-16 11:56:37,978 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1007 transitions. [2022-11-16 11:56:37,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-16 11:56:37,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:37,982 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:37,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:56:37,982 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:37,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash -660150757, now seen corresponding path program 1 times [2022-11-16 11:56:37,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:37,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695313763] [2022-11-16 11:56:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:37,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:38,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:38,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:56:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:38,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:56:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:56:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:38,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:56:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:56:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:38,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:56:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:38,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:56:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:38,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 11:56:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:38,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:56:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:38,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:56:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:39,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:56:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:39,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-16 11:56:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:39,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 11:56:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:39,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-16 11:56:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-16 11:56:39,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:39,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695313763] [2022-11-16 11:56:39,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695313763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:56:39,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064627410] [2022-11-16 11:56:39,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:39,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:39,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:39,041 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:39,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:56:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:39,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-16 11:56:39,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:40,820 INFO L321 Elim1Store]: treesize reduction 51, result has 25.0 percent of original size [2022-11-16 11:56:40,820 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 1 case distinctions, treesize of input 31 treesize of output 40 [2022-11-16 11:56:40,829 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 17 treesize of output 13 [2022-11-16 11:56:40,835 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 17 treesize of output 13 [2022-11-16 11:56:40,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-11-16 11:56:40,847 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 33 treesize of output 25 [2022-11-16 11:56:41,117 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 11:56:41,118 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 35 treesize of output 19 [2022-11-16 11:56:41,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-16 11:56:41,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 11:56:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-16 11:56:41,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:56:42,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-11-16 11:56:42,542 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 9 treesize of output 3 [2022-11-16 11:56:42,545 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-16 11:56:42,904 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:56:42,905 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 51 treesize of output 50 [2022-11-16 11:56:42,921 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:56:42,921 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 39 treesize of output 38 [2022-11-16 11:56:43,109 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:56:43,110 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 26 treesize of output 25 [2022-11-16 11:56:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-16 11:56:43,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064627410] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:56:43,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:56:43,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 15] total 38 [2022-11-16 11:56:43,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046971501] [2022-11-16 11:56:43,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:56:43,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 11:56:43,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:43,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 11:56:43,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1279, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 11:56:43,193 INFO L87 Difference]: Start difference. First operand 677 states and 1007 transitions. Second operand has 38 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 35 states have internal predecessors, (132), 12 states have call successors, (43), 8 states have call predecessors, (43), 11 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2022-11-16 11:56:52,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:52,744 INFO L93 Difference]: Finished difference Result 1401 states and 2159 transitions. [2022-11-16 11:56:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-16 11:56:52,745 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 35 states have internal predecessors, (132), 12 states have call successors, (43), 8 states have call predecessors, (43), 11 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) Word has length 121 [2022-11-16 11:56:52,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:52,752 INFO L225 Difference]: With dead ends: 1401 [2022-11-16 11:56:52,753 INFO L226 Difference]: Without dead ends: 1028 [2022-11-16 11:56:52,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 246 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1914 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1051, Invalid=7137, Unknown=2, NotChecked=0, Total=8190 [2022-11-16 11:56:52,759 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 631 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 5609 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 6366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 5609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 489 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:52,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 1142 Invalid, 6366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 5609 Invalid, 0 Unknown, 489 Unchecked, 5.1s Time] [2022-11-16 11:56:52,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2022-11-16 11:56:52,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 944. [2022-11-16 11:56:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 566 states have (on average 1.1837455830388692) internal successors, (670), 580 states have internal predecessors, (670), 309 states have call successors, (309), 58 states have call predecessors, (309), 68 states have return successors, (460), 305 states have call predecessors, (460), 307 states have call successors, (460) [2022-11-16 11:56:52,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1439 transitions. [2022-11-16 11:56:52,919 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1439 transitions. Word has length 121 [2022-11-16 11:56:52,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:52,919 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 1439 transitions. [2022-11-16 11:56:52,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 35 states have internal predecessors, (132), 12 states have call successors, (43), 8 states have call predecessors, (43), 11 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2022-11-16 11:56:52,920 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1439 transitions. [2022-11-16 11:56:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-16 11:56:52,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:52,924 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 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] [2022-11-16 11:56:52,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:56:53,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:56:53,131 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:53,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:53,132 INFO L85 PathProgramCache]: Analyzing trace with hash -440949530, now seen corresponding path program 1 times [2022-11-16 11:56:53,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:53,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97314768] [2022-11-16 11:56:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:53,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:56,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:56,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:56:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:57,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:56:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:57,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:56:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:57,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:56:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:57,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:56:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:56:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:57,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:56:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:57,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:56:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:57,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:56:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:57,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:56:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 11:56:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 11:56:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 11:56:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:58,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 11:56:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:56:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-16 11:56:58,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:58,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97314768] [2022-11-16 11:56:58,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97314768] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:56:58,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196095288] [2022-11-16 11:56:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:58,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:58,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:58,031 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:58,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:56:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:58,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 11:56:58,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:58,719 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 10 treesize of output 8 [2022-11-16 11:56:58,842 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 [2022-11-16 11:56:58,846 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 [2022-11-16 11:56:59,389 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 16 treesize of output 18 [2022-11-16 11:56:59,396 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 16 treesize of output 18 [2022-11-16 11:56:59,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:56:59,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:56:59,588 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-16 11:56:59,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:56:59,791 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 8 |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.offset|))) (and (forall ((v_ArrVal_1305 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#rhs~0#1.base| v_ArrVal_1305) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.base|) .cse0) 0)) (forall ((v_ArrVal_1304 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#rhs~0#1.base| v_ArrVal_1304) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.base|) .cse0) 0)))) is different from false [2022-11-16 11:56:59,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196095288] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:56:59,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:56:59,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2022-11-16 11:56:59,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605472221] [2022-11-16 11:56:59,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:56:59,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 11:56:59,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:59,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 11:56:59,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=728, Unknown=1, NotChecked=54, Total=870 [2022-11-16 11:56:59,809 INFO L87 Difference]: Start difference. First operand 944 states and 1439 transitions. Second operand has 27 states, 23 states have (on average 4.130434782608695) internal successors, (95), 23 states have internal predecessors, (95), 11 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (32), 9 states have call predecessors, (32), 11 states have call successors, (32) [2022-11-16 11:57:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:04,896 INFO L93 Difference]: Finished difference Result 1636 states and 2556 transitions. [2022-11-16 11:57:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:57:04,896 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 4.130434782608695) internal successors, (95), 23 states have internal predecessors, (95), 11 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (32), 9 states have call predecessors, (32), 11 states have call successors, (32) Word has length 120 [2022-11-16 11:57:04,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:04,905 INFO L225 Difference]: With dead ends: 1636 [2022-11-16 11:57:04,905 INFO L226 Difference]: Without dead ends: 1135 [2022-11-16 11:57:04,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 217 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=242, Invalid=1741, Unknown=1, NotChecked=86, Total=2070 [2022-11-16 11:57:04,910 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 224 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 3497 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 4127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 3497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 467 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:04,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 881 Invalid, 4127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 3497 Invalid, 0 Unknown, 467 Unchecked, 3.9s Time] [2022-11-16 11:57:04,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-11-16 11:57:05,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 995. [2022-11-16 11:57:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 603 states have (on average 1.1791044776119404) internal successors, (711), 617 states have internal predecessors, (711), 316 states have call successors, (316), 65 states have call predecessors, (316), 75 states have return successors, (472), 312 states have call predecessors, (472), 314 states have call successors, (472) [2022-11-16 11:57:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1499 transitions. [2022-11-16 11:57:05,073 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1499 transitions. Word has length 120 [2022-11-16 11:57:05,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:05,073 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1499 transitions. [2022-11-16 11:57:05,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 4.130434782608695) internal successors, (95), 23 states have internal predecessors, (95), 11 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (32), 9 states have call predecessors, (32), 11 states have call successors, (32) [2022-11-16 11:57:05,074 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1499 transitions. [2022-11-16 11:57:05,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-16 11:57:05,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:05,078 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:05,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:05,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:57:05,292 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:05,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:05,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1937889046, now seen corresponding path program 1 times [2022-11-16 11:57:05,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:05,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464266581] [2022-11-16 11:57:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:05,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:57:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:57:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:57:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:57:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:57:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:57:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:57:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:57:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:57:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 11:57:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:57:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:57:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:57:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 11:57:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-16 11:57:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-16 11:57:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-16 11:57:07,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:07,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464266581] [2022-11-16 11:57:07,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464266581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:07,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490509551] [2022-11-16 11:57:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:07,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:07,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:07,896 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:07,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:57:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:08,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-16 11:57:08,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:08,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:57:08,925 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 11:57:08,926 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 1 case distinctions, treesize of input 39 treesize of output 34 [2022-11-16 11:57:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 45 proven. 22 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-16 11:57:10,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:11,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-16 11:57:11,464 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:57:11,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-11-16 11:57:11,497 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-16 11:57:11,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490509551] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:11,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:11,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 13] total 30 [2022-11-16 11:57:11,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910773301] [2022-11-16 11:57:11,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:11,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 11:57:11,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:11,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 11:57:11,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:57:11,499 INFO L87 Difference]: Start difference. First operand 995 states and 1499 transitions. Second operand has 30 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 26 states have internal predecessors, (104), 11 states have call successors, (39), 9 states have call predecessors, (39), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) [2022-11-16 11:57:12,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:12,981 INFO L93 Difference]: Finished difference Result 1605 states and 2524 transitions. [2022-11-16 11:57:12,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:57:12,982 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 26 states have internal predecessors, (104), 11 states have call successors, (39), 9 states have call predecessors, (39), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) Word has length 121 [2022-11-16 11:57:12,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:12,990 INFO L225 Difference]: With dead ends: 1605 [2022-11-16 11:57:12,990 INFO L226 Difference]: Without dead ends: 1112 [2022-11-16 11:57:12,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 242 SyntacticMatches, 23 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=184, Invalid=1222, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 11:57:12,995 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 109 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 686 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:12,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1850 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 651 Invalid, 0 Unknown, 686 Unchecked, 0.8s Time] [2022-11-16 11:57:12,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-11-16 11:57:13,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1053. [2022-11-16 11:57:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 618 states have (on average 1.1893203883495145) internal successors, (735), 633 states have internal predecessors, (735), 361 states have call successors, (361), 65 states have call predecessors, (361), 73 states have return successors, (536), 354 states have call predecessors, (536), 359 states have call successors, (536) [2022-11-16 11:57:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1632 transitions. [2022-11-16 11:57:13,186 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1632 transitions. Word has length 121 [2022-11-16 11:57:13,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:13,186 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1632 transitions. [2022-11-16 11:57:13,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 26 states have internal predecessors, (104), 11 states have call successors, (39), 9 states have call predecessors, (39), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) [2022-11-16 11:57:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1632 transitions. [2022-11-16 11:57:13,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-16 11:57:13,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:13,191 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-16 11:57:13,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-16 11:57:13,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:57:13,399 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:13,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:13,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1292205762, now seen corresponding path program 1 times [2022-11-16 11:57:13,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:13,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919269282] [2022-11-16 11:57:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:13,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:57:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:57:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:57:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:57:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:57:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:57:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:57:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:57:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 11:57:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:57:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:57:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:57:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 11:57:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:57:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:57:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:57:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 11:57:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-16 11:57:13,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:13,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919269282] [2022-11-16 11:57:13,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919269282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:13,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:13,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:57:13,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497202580] [2022-11-16 11:57:13,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:13,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:57:13,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:13,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:57:13,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:57:13,796 INFO L87 Difference]: Start difference. First operand 1053 states and 1632 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-16 11:57:14,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:14,445 INFO L93 Difference]: Finished difference Result 1507 states and 2379 transitions. [2022-11-16 11:57:14,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:57:14,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 128 [2022-11-16 11:57:14,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:14,454 INFO L225 Difference]: With dead ends: 1507 [2022-11-16 11:57:14,454 INFO L226 Difference]: Without dead ends: 1073 [2022-11-16 11:57:14,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:57:14,458 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 78 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:14,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 222 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:57:14,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-11-16 11:57:14,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1067. [2022-11-16 11:57:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 628 states have (on average 1.1863057324840764) internal successors, (745), 644 states have internal predecessors, (745), 361 states have call successors, (361), 65 states have call predecessors, (361), 77 states have return successors, (549), 357 states have call predecessors, (549), 359 states have call successors, (549) [2022-11-16 11:57:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1655 transitions. [2022-11-16 11:57:14,683 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1655 transitions. Word has length 128 [2022-11-16 11:57:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:14,684 INFO L495 AbstractCegarLoop]: Abstraction has 1067 states and 1655 transitions. [2022-11-16 11:57:14,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-16 11:57:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1655 transitions. [2022-11-16 11:57:14,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-16 11:57:14,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:14,689 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 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] [2022-11-16 11:57:14,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:57:14,689 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:14,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:14,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1501010925, now seen corresponding path program 2 times [2022-11-16 11:57:14,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:14,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046505985] [2022-11-16 11:57:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:14,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:17,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:57:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:17,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:57:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:17,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:57:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:17,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:17,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:57:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:17,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:57:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:57:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:17,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:57:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:18,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 11:57:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:57:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:57:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:18,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 11:57:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:18,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:57:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:18,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 11:57:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:18,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:57:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:18,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-16 11:57:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-16 11:57:18,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:18,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046505985] [2022-11-16 11:57:18,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046505985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:18,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426840394] [2022-11-16 11:57:18,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:57:18,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:18,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:18,219 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:18,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:57:19,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:57:19,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:57:19,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 2771 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-16 11:57:19,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:19,773 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 10 treesize of output 8 [2022-11-16 11:57:19,879 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 17 treesize of output 20 [2022-11-16 11:57:19,882 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 16 treesize of output 15 [2022-11-16 11:57:19,890 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 17 treesize of output 20 [2022-11-16 11:57:19,895 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 16 treesize of output 15 [2022-11-16 11:57:19,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 24 [2022-11-16 11:57:20,565 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:57:20,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 130 [2022-11-16 11:57:20,604 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:57:20,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 110 [2022-11-16 11:57:20,641 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:57:20,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 80 [2022-11-16 11:57:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 67 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-16 11:57:22,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:24,165 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 116 treesize of output 98 [2022-11-16 11:57:24,172 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 93 treesize of output 89 [2022-11-16 11:57:24,179 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 118 treesize of output 100 [2022-11-16 11:57:24,185 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 101 treesize of output 97 [2022-11-16 11:57:24,189 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 117 treesize of output 109 [2022-11-16 11:57:24,330 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 10 treesize of output 8 [2022-11-16 11:57:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-16 11:57:24,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426840394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:24,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:24,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 38 [2022-11-16 11:57:24,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692652650] [2022-11-16 11:57:24,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:24,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 11:57:24,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:24,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 11:57:24,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 11:57:24,380 INFO L87 Difference]: Start difference. First operand 1067 states and 1655 transitions. Second operand has 38 states, 33 states have (on average 3.909090909090909) internal successors, (129), 31 states have internal predecessors, (129), 14 states have call successors, (41), 7 states have call predecessors, (41), 9 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) [2022-11-16 11:57:31,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:31,557 INFO L93 Difference]: Finished difference Result 1700 states and 2694 transitions. [2022-11-16 11:57:31,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:57:31,558 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 3.909090909090909) internal successors, (129), 31 states have internal predecessors, (129), 14 states have call successors, (41), 7 states have call predecessors, (41), 9 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) Word has length 126 [2022-11-16 11:57:31,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:31,568 INFO L225 Difference]: With dead ends: 1700 [2022-11-16 11:57:31,569 INFO L226 Difference]: Without dead ends: 1415 [2022-11-16 11:57:31,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 264 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=489, Invalid=3671, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 11:57:31,574 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 358 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 4970 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 5795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 4970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 628 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:31,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1295 Invalid, 5795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 4970 Invalid, 0 Unknown, 628 Unchecked, 5.0s Time] [2022-11-16 11:57:31,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2022-11-16 11:57:31,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1391. [2022-11-16 11:57:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 809 states have (on average 1.1953028430160693) internal successors, (967), 825 states have internal predecessors, (967), 487 states have call successors, (487), 79 states have call predecessors, (487), 94 states have return successors, (730), 486 states have call predecessors, (730), 484 states have call successors, (730) [2022-11-16 11:57:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2184 transitions. [2022-11-16 11:57:31,824 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2184 transitions. Word has length 126 [2022-11-16 11:57:31,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:31,824 INFO L495 AbstractCegarLoop]: Abstraction has 1391 states and 2184 transitions. [2022-11-16 11:57:31,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 3.909090909090909) internal successors, (129), 31 states have internal predecessors, (129), 14 states have call successors, (41), 7 states have call predecessors, (41), 9 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) [2022-11-16 11:57:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2184 transitions. [2022-11-16 11:57:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-16 11:57:31,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:31,830 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-16 11:57:31,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:32,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:32,041 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:32,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:32,041 INFO L85 PathProgramCache]: Analyzing trace with hash -236851265, now seen corresponding path program 1 times [2022-11-16 11:57:32,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:32,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305455545] [2022-11-16 11:57:32,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:32,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:57:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:57:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:57:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:57:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:57:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:57:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:57:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:57:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 11:57:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:57:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:57:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:57:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 11:57:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:57:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:57:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:57:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 11:57:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-16 11:57:32,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:32,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305455545] [2022-11-16 11:57:32,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305455545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:32,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:32,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:57:32,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679704146] [2022-11-16 11:57:32,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:32,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:57:32,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:32,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:57:32,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:57:32,397 INFO L87 Difference]: Start difference. First operand 1391 states and 2184 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-16 11:57:33,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:33,070 INFO L93 Difference]: Finished difference Result 2096 states and 3338 transitions. [2022-11-16 11:57:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:57:33,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 129 [2022-11-16 11:57:33,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:33,080 INFO L225 Difference]: With dead ends: 2096 [2022-11-16 11:57:33,081 INFO L226 Difference]: Without dead ends: 1423 [2022-11-16 11:57:33,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:57:33,086 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 137 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:33,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 210 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:57:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-11-16 11:57:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1391. [2022-11-16 11:57:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 809 states have (on average 1.1953028430160693) internal successors, (967), 825 states have internal predecessors, (967), 487 states have call successors, (487), 79 states have call predecessors, (487), 94 states have return successors, (730), 486 states have call predecessors, (730), 484 states have call successors, (730) [2022-11-16 11:57:33,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2184 transitions. [2022-11-16 11:57:33,337 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2184 transitions. Word has length 129 [2022-11-16 11:57:33,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:33,337 INFO L495 AbstractCegarLoop]: Abstraction has 1391 states and 2184 transitions. [2022-11-16 11:57:33,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-16 11:57:33,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2184 transitions. [2022-11-16 11:57:33,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-16 11:57:33,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:33,342 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-16 11:57:33,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:57:33,342 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:33,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:33,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2044305728, now seen corresponding path program 1 times [2022-11-16 11:57:33,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:33,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452944268] [2022-11-16 11:57:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:33,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:35,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:57:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:35,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:57:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:57:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:57:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:35,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:57:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:35,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:57:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:35,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:57:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:57:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 11:57:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:35,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:57:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:57:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:57:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 11:57:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:57:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:57:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:57:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 11:57:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-16 11:57:36,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:36,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452944268] [2022-11-16 11:57:36,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452944268] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:36,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400003726] [2022-11-16 11:57:36,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:36,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:36,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:36,193 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:36,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:57:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 2727 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-16 11:57:36,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:36,833 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 10 treesize of output 8 [2022-11-16 11:57:37,489 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 30 treesize of output 29 [2022-11-16 11:57:38,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2022-11-16 11:57:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 26 proven. 37 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-16 11:57:38,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:46,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400003726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:46,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:57:46,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 33 [2022-11-16 11:57:46,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610814992] [2022-11-16 11:57:46,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:46,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-16 11:57:46,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:46,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-16 11:57:46,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1276, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 11:57:46,505 INFO L87 Difference]: Start difference. First operand 1391 states and 2184 transitions. Second operand has 33 states, 25 states have (on average 3.96) internal successors, (99), 29 states have internal predecessors, (99), 15 states have call successors, (39), 7 states have call predecessors, (39), 8 states have return successors, (37), 9 states have call predecessors, (37), 13 states have call successors, (37) [2022-11-16 11:58:01,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:58:01,229 INFO L93 Difference]: Finished difference Result 1879 states and 2918 transitions. [2022-11-16 11:58:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-16 11:58:01,235 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 25 states have (on average 3.96) internal successors, (99), 29 states have internal predecessors, (99), 15 states have call successors, (39), 7 states have call predecessors, (39), 8 states have return successors, (37), 9 states have call predecessors, (37), 13 states have call successors, (37) Word has length 129 [2022-11-16 11:58:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:58:01,247 INFO L225 Difference]: With dead ends: 1879 [2022-11-16 11:58:01,247 INFO L226 Difference]: Without dead ends: 1739 [2022-11-16 11:58:01,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 241 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=423, Invalid=4539, Unknown=8, NotChecked=0, Total=4970 [2022-11-16 11:58:01,252 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 467 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 4829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1198 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:58:01,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 931 Invalid, 4829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 3138 Invalid, 0 Unknown, 1198 Unchecked, 3.4s Time] [2022-11-16 11:58:01,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2022-11-16 11:58:01,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1572. [2022-11-16 11:58:01,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 912 states have (on average 1.2017543859649122) internal successors, (1096), 932 states have internal predecessors, (1096), 548 states have call successors, (548), 86 states have call predecessors, (548), 111 states have return successors, (820), 553 states have call predecessors, (820), 545 states have call successors, (820) [2022-11-16 11:58:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2464 transitions. [2022-11-16 11:58:01,609 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2464 transitions. Word has length 129 [2022-11-16 11:58:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:58:01,610 INFO L495 AbstractCegarLoop]: Abstraction has 1572 states and 2464 transitions. [2022-11-16 11:58:01,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 25 states have (on average 3.96) internal successors, (99), 29 states have internal predecessors, (99), 15 states have call successors, (39), 7 states have call predecessors, (39), 8 states have return successors, (37), 9 states have call predecessors, (37), 13 states have call successors, (37) [2022-11-16 11:58:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2464 transitions. [2022-11-16 11:58:01,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-16 11:58:01,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:58:01,615 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 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] [2022-11-16 11:58:01,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:01,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 11:58:01,825 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:58:01,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:01,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1385466379, now seen corresponding path program 1 times [2022-11-16 11:58:01,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:01,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682282959] [2022-11-16 11:58:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:01,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:07,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:58:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:07,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:58:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:07,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:58:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:07,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:58:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:58:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:07,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:58:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:07,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:58:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:07,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 11:58:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:07,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:58:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:58:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:07,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:58:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:58:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:08,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:58:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:58:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:58:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:08,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:58:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-16 11:58:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:08,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-16 11:58:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-16 11:58:08,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:08,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682282959] [2022-11-16 11:58:08,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682282959] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:58:08,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486968464] [2022-11-16 11:58:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:08,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:08,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:08,602 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:08,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:58:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:09,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 11:58:09,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:09,222 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 10 treesize of output 8 [2022-11-16 11:58:09,848 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 16 treesize of output 18 [2022-11-16 11:58:09,911 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 [2022-11-16 11:58:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 84 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-16 11:58:10,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:58:10,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486968464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:58:10,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:58:10,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 12] total 36 [2022-11-16 11:58:10,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031857598] [2022-11-16 11:58:10,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:58:10,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-16 11:58:10,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-16 11:58:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1295, Unknown=11, NotChecked=0, Total=1406 [2022-11-16 11:58:10,470 INFO L87 Difference]: Start difference. First operand 1572 states and 2464 transitions. Second operand has 36 states, 32 states have (on average 3.53125) internal successors, (113), 31 states have internal predecessors, (113), 14 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) [2022-11-16 11:58:21,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:58:21,336 INFO L93 Difference]: Finished difference Result 2141 states and 3352 transitions. [2022-11-16 11:58:21,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 11:58:21,337 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 3.53125) internal successors, (113), 31 states have internal predecessors, (113), 14 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) Word has length 131 [2022-11-16 11:58:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:58:21,347 INFO L225 Difference]: With dead ends: 2141 [2022-11-16 11:58:21,348 INFO L226 Difference]: Without dead ends: 1511 [2022-11-16 11:58:21,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 233 SyntacticMatches, 6 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=539, Invalid=5000, Unknown=11, NotChecked=0, Total=5550 [2022-11-16 11:58:21,354 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 519 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 7012 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 8025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 7012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 420 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:58:21,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1153 Invalid, 8025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 7012 Invalid, 0 Unknown, 420 Unchecked, 7.7s Time] [2022-11-16 11:58:21,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2022-11-16 11:58:21,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1358. [2022-11-16 11:58:21,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 802 states have (on average 1.188279301745636) internal successors, (953), 824 states have internal predecessors, (953), 448 states have call successors, (448), 81 states have call predecessors, (448), 107 states have return successors, (662), 452 states have call predecessors, (662), 445 states have call successors, (662) [2022-11-16 11:58:21,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2063 transitions. [2022-11-16 11:58:21,686 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2063 transitions. Word has length 131 [2022-11-16 11:58:21,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:58:21,686 INFO L495 AbstractCegarLoop]: Abstraction has 1358 states and 2063 transitions. [2022-11-16 11:58:21,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 3.53125) internal successors, (113), 31 states have internal predecessors, (113), 14 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) [2022-11-16 11:58:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2063 transitions. [2022-11-16 11:58:21,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-16 11:58:21,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:58:21,691 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:21,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:21,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 11:58:21,901 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:58:21,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:21,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1893369871, now seen corresponding path program 1 times [2022-11-16 11:58:21,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:21,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463674691] [2022-11-16 11:58:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:21,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:58:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:58:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:58:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:58:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:58:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:58:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:58:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:58:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:58:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 11:58:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:58:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:58:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:58:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:58:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-16 11:58:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-16 11:58:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:26,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-16 11:58:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:26,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-16 11:58:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:26,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-16 11:58:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-16 11:58:26,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:26,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463674691] [2022-11-16 11:58:26,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463674691] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:58:26,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892449445] [2022-11-16 11:58:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:26,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:26,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:26,055 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:26,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 11:58:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:26,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 2853 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-16 11:58:26,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:26,704 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 10 treesize of output 8 [2022-11-16 11:58:26,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:58:33,564 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 17 treesize of output 19 [2022-11-16 11:58:33,674 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2029 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_save_byte_from_array_~storage#1.base| v_ArrVal_2029))) is different from true [2022-11-16 11:58:33,677 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 [2022-11-16 11:58:33,684 WARN L855 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int) (v_ArrVal_2030 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base| v_ArrVal_2030) |c_#memory_$Pointer$.base|)) is different from true [2022-11-16 11:58:33,701 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:58:33,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 11:58:33,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-16 11:58:35,937 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 [2022-11-16 11:58:35,944 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 11:58:35,949 WARN L855 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int) (v_arrayElimArr_1 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base| v_arrayElimArr_1) |c_#memory_$Pointer$.base|)) is different from true [2022-11-16 11:58:35,955 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 [2022-11-16 11:58:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 74 proven. 62 refuted. 0 times theorem prover too weak. 38 trivial. 4 not checked. [2022-11-16 11:58:58,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:58:59,584 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:58:59,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-11-16 11:58:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-16 11:58:59,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892449445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:58:59,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:58:59,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 31, 11] total 63 [2022-11-16 11:58:59,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395223804] [2022-11-16 11:58:59,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:58:59,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-16 11:58:59,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:59,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-16 11:58:59,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=3343, Unknown=8, NotChecked=354, Total=3906 [2022-11-16 11:58:59,877 INFO L87 Difference]: Start difference. First operand 1358 states and 2063 transitions. Second operand has 63 states, 58 states have (on average 3.1724137931034484) internal successors, (184), 55 states have internal predecessors, (184), 22 states have call successors, (58), 10 states have call predecessors, (58), 15 states have return successors, (54), 20 states have call predecessors, (54), 20 states have call successors, (54) [2022-11-16 12:00:02,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:02,001 INFO L93 Difference]: Finished difference Result 3983 states and 7009 transitions. [2022-11-16 12:00:02,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-11-16 12:00:02,002 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 58 states have (on average 3.1724137931034484) internal successors, (184), 55 states have internal predecessors, (184), 22 states have call successors, (58), 10 states have call predecessors, (58), 15 states have return successors, (54), 20 states have call predecessors, (54), 20 states have call successors, (54) Word has length 144 [2022-11-16 12:00:02,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:02,021 INFO L225 Difference]: With dead ends: 3983 [2022-11-16 12:00:02,022 INFO L226 Difference]: Without dead ends: 2880 [2022-11-16 12:00:02,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 301 SyntacticMatches, 14 SemanticMatches, 161 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 7555 ImplicationChecksByTransitivity, 70.4s TimeCoverageRelationStatistics Valid=2007, Invalid=23356, Unknown=89, NotChecked=954, Total=26406 [2022-11-16 12:00:02,032 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1099 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 21186 mSolverCounterSat, 2273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 29775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2273 IncrementalHoareTripleChecker+Valid, 21186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6316 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:02,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 3173 Invalid, 29775 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2273 Valid, 21186 Invalid, 0 Unknown, 6316 Unchecked, 22.9s Time] [2022-11-16 12:00:02,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2022-11-16 12:00:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2044. [2022-11-16 12:00:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1184 states have (on average 1.2077702702702702) internal successors, (1430), 1218 states have internal predecessors, (1430), 726 states have call successors, (726), 100 states have call predecessors, (726), 133 states have return successors, (1102), 725 states have call predecessors, (1102), 722 states have call successors, (1102) [2022-11-16 12:00:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 3258 transitions. [2022-11-16 12:00:02,618 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 3258 transitions. Word has length 144 [2022-11-16 12:00:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:02,618 INFO L495 AbstractCegarLoop]: Abstraction has 2044 states and 3258 transitions. [2022-11-16 12:00:02,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 58 states have (on average 3.1724137931034484) internal successors, (184), 55 states have internal predecessors, (184), 22 states have call successors, (58), 10 states have call predecessors, (58), 15 states have return successors, (54), 20 states have call predecessors, (54), 20 states have call successors, (54) [2022-11-16 12:00:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 3258 transitions. [2022-11-16 12:00:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-16 12:00:02,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:02,627 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:02,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:02,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 12:00:02,837 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:02,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:02,838 INFO L85 PathProgramCache]: Analyzing trace with hash -170142083, now seen corresponding path program 1 times [2022-11-16 12:00:02,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:02,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114616012] [2022-11-16 12:00:02,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:02,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:05,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:00:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:00:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:06,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:00:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:06,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:00:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:00:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:06,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:00:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:06,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:00:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:00:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 12:00:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:06,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 12:00:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:00:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:06,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:00:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:06,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 12:00:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 12:00:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 12:00:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 12:00:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 12:00:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:07,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-16 12:00:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 12:00:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:07,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-16 12:00:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-16 12:00:07,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:07,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114616012] [2022-11-16 12:00:07,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114616012] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:07,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133017855] [2022-11-16 12:00:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:07,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:07,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:07,236 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:07,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 12:00:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:07,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 2830 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 12:00:07,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:08,102 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-16 12:00:08,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:08,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133017855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:08,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:00:08,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [27] total 34 [2022-11-16 12:00:08,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576128398] [2022-11-16 12:00:08,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:08,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:00:08,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:08,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:00:08,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:00:08,105 INFO L87 Difference]: Start difference. First operand 2044 states and 3258 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-16 12:00:08,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:08,679 INFO L93 Difference]: Finished difference Result 3133 states and 4980 transitions. [2022-11-16 12:00:08,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:00:08,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 149 [2022-11-16 12:00:08,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:08,690 INFO L225 Difference]: With dead ends: 3133 [2022-11-16 12:00:08,690 INFO L226 Difference]: Without dead ends: 1672 [2022-11-16 12:00:08,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=95, Invalid=1237, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 12:00:08,700 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 12 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:08,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1270 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:00:08,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2022-11-16 12:00:08,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1650. [2022-11-16 12:00:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 968 states have (on average 1.1694214876033058) internal successors, (1132), 984 states have internal predecessors, (1132), 559 states have call successors, (559), 100 states have call predecessors, (559), 122 states have return successors, (791), 565 states have call predecessors, (791), 555 states have call successors, (791) [2022-11-16 12:00:09,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2482 transitions. [2022-11-16 12:00:09,011 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2482 transitions. Word has length 149 [2022-11-16 12:00:09,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:09,011 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2482 transitions. [2022-11-16 12:00:09,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-16 12:00:09,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2482 transitions. [2022-11-16 12:00:09,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-16 12:00:09,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:09,018 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 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] [2022-11-16 12:00:09,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:09,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:09,229 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:09,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:09,229 INFO L85 PathProgramCache]: Analyzing trace with hash -196742698, now seen corresponding path program 2 times [2022-11-16 12:00:09,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:09,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974146516] [2022-11-16 12:00:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:09,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:00:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:12,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:00:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:00:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:00:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:12,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:00:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:00:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:12,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:00:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:12,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:00:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:12,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 12:00:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:12,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 12:00:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:13,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:00:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:13,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:00:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:13,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 12:00:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:13,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 12:00:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:13,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 12:00:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-16 12:00:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:13,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-16 12:00:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-16 12:00:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:13,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-16 12:00:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-16 12:00:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-16 12:00:13,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:13,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974146516] [2022-11-16 12:00:13,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974146516] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:13,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343855779] [2022-11-16 12:00:13,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:00:13,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:13,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:13,780 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:13,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 12:00:15,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:00:15,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:00:15,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 2840 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-16 12:00:15,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:15,078 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 10 treesize of output 8 [2022-11-16 12:00:15,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:00:16,688 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 28 treesize of output 28 [2022-11-16 12:00:16,694 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 16 treesize of output 15 [2022-11-16 12:00:16,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2022-11-16 12:00:17,049 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_2329 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_save_byte_from_array_~storage#1.base| v_ArrVal_2329))) (exists ((v_ArrVal_2330 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_save_byte_from_array_~storage#1.base| v_ArrVal_2330)))) is different from true [2022-11-16 12:00:17,054 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 [2022-11-16 12:00:17,057 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 [2022-11-16 12:00:17,082 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|save_byte_from_array_~storage#1.base| Int) (v_ArrVal_2332 (Array Int Int)) (v_ArrVal_2331 (Array Int Int))) (and (= |c_#memory_int| (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| v_ArrVal_2331)) (= (store |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base| v_ArrVal_2332) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-16 12:00:17,130 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:00:17,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 39 [2022-11-16 12:00:17,162 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:00:17,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 43 [2022-11-16 12:00:17,202 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 7 treesize of output 5 [2022-11-16 12:00:17,224 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 18 treesize of output 14 [2022-11-16 12:00:17,241 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 11 treesize of output 7 [2022-11-16 12:00:17,261 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 22 treesize of output 14 [2022-11-16 12:00:17,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 35 [2022-11-16 12:00:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 59 proven. 81 refuted. 0 times theorem prover too weak. 35 trivial. 2 not checked. [2022-11-16 12:00:32,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:00:33,941 WARN L833 $PredicateComparison]: unable to prove that (and (or (forall ((|v_save_byte_from_array_~storage#1.base_104| Int) (v_ArrVal_2340 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |v_save_byte_from_array_~storage#1.base_104| v_ArrVal_2340) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.offset|) 18446744073709551616) 0))) (< 0 (+ |c_#StackHeapBarrier| 1))) (forall ((|v_save_byte_from_array_~storage#1.base_104| Int) (v_ArrVal_2340 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |v_save_byte_from_array_~storage#1.base_104| v_ArrVal_2340))) (or (< 0 (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#rhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#rhs~0#1.offset|) 18446744073709551616)) (not (= (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.offset|) 18446744073709551616) 0))))) (forall ((|v_save_byte_from_array_~storage#1.base_104| Int) (v_ArrVal_2340 (Array Int Int))) (or (forall ((v_ArrVal_2339 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_save_byte_from_array_~storage#1.base_104| v_ArrVal_2339) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#rhs~0#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#rhs~0#1.offset|)) 0))) (not (= (mod (select (select (store |c_#memory_int| |v_save_byte_from_array_~storage#1.base_104| v_ArrVal_2340) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.offset|) 18446744073709551616) 0))))) is different from false [2022-11-16 12:00:33,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343855779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:33,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:00:33,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 32] total 57 [2022-11-16 12:00:33,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493971415] [2022-11-16 12:00:33,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:00:33,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-16 12:00:33,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:33,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-16 12:00:33,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=4036, Unknown=4, NotChecked=390, Total=4692 [2022-11-16 12:00:33,951 INFO L87 Difference]: Start difference. First operand 1650 states and 2482 transitions. Second operand has 57 states, 52 states have (on average 3.0) internal successors, (156), 46 states have internal predecessors, (156), 18 states have call successors, (43), 13 states have call predecessors, (43), 16 states have return successors, (40), 18 states have call predecessors, (40), 16 states have call successors, (40) [2022-11-16 12:01:46,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:46,126 INFO L93 Difference]: Finished difference Result 3031 states and 4598 transitions. [2022-11-16 12:01:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-16 12:01:46,127 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 52 states have (on average 3.0) internal successors, (156), 46 states have internal predecessors, (156), 18 states have call successors, (43), 13 states have call predecessors, (43), 16 states have return successors, (40), 18 states have call predecessors, (40), 16 states have call successors, (40) Word has length 151 [2022-11-16 12:01:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:46,141 INFO L225 Difference]: With dead ends: 3031 [2022-11-16 12:01:46,142 INFO L226 Difference]: Without dead ends: 2218 [2022-11-16 12:01:46,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 223 SyntacticMatches, 13 SemanticMatches, 134 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 4772 ImplicationChecksByTransitivity, 79.1s TimeCoverageRelationStatistics Valid=1314, Invalid=16209, Unknown=45, NotChecked=792, Total=18360 [2022-11-16 12:01:46,149 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 675 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 9729 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 14308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 9729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3836 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:46,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1962 Invalid, 14308 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [743 Valid, 9729 Invalid, 0 Unknown, 3836 Unchecked, 10.2s Time] [2022-11-16 12:01:46,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2022-11-16 12:01:46,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2064. [2022-11-16 12:01:46,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 1213 states have (on average 1.1731244847485574) internal successors, (1423), 1236 states have internal predecessors, (1423), 692 states have call successors, (692), 124 states have call predecessors, (692), 158 states have return successors, (1000), 703 states have call predecessors, (1000), 687 states have call successors, (1000) [2022-11-16 12:01:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 3115 transitions. [2022-11-16 12:01:46,568 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 3115 transitions. Word has length 151 [2022-11-16 12:01:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:46,569 INFO L495 AbstractCegarLoop]: Abstraction has 2064 states and 3115 transitions. [2022-11-16 12:01:46,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 52 states have (on average 3.0) internal successors, (156), 46 states have internal predecessors, (156), 18 states have call successors, (43), 13 states have call predecessors, (43), 16 states have return successors, (40), 18 states have call predecessors, (40), 16 states have call successors, (40) [2022-11-16 12:01:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 3115 transitions. [2022-11-16 12:01:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-16 12:01:46,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:46,576 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 12:01:46,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:46,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 12:01:46,789 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:46,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:46,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1236421647, now seen corresponding path program 1 times [2022-11-16 12:01:46,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:46,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703464488] [2022-11-16 12:01:46,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:46,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:01:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:01:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:01:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:01:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:01:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:01:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:01:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:01:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 12:01:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 12:01:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:01:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:01:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-16 12:01:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-16 12:01:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-16 12:01:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 12:01:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-16 12:01:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-16 12:01:48,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:48,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703464488] [2022-11-16 12:01:48,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703464488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:48,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:48,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 12:01:48,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903501880] [2022-11-16 12:01:48,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:48,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:01:48,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:48,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:01:48,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:01:48,113 INFO L87 Difference]: Start difference. First operand 2064 states and 3115 transitions. Second operand has 16 states, 15 states have (on average 3.8) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-16 12:01:50,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:50,079 INFO L93 Difference]: Finished difference Result 2079 states and 3129 transitions. [2022-11-16 12:01:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:01:50,080 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.8) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 152 [2022-11-16 12:01:50,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:50,093 INFO L225 Difference]: With dead ends: 2079 [2022-11-16 12:01:50,093 INFO L226 Difference]: Without dead ends: 2077 [2022-11-16 12:01:50,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:01:50,095 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 190 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:50,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 663 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 12:01:50,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2022-11-16 12:01:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2076. [2022-11-16 12:01:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 1222 states have (on average 1.1718494271685762) internal successors, (1432), 1245 states have internal predecessors, (1432), 692 states have call successors, (692), 127 states have call predecessors, (692), 161 states have return successors, (1000), 703 states have call predecessors, (1000), 687 states have call successors, (1000) [2022-11-16 12:01:50,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 3124 transitions. [2022-11-16 12:01:50,542 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 3124 transitions. Word has length 152 [2022-11-16 12:01:50,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:50,542 INFO L495 AbstractCegarLoop]: Abstraction has 2076 states and 3124 transitions. [2022-11-16 12:01:50,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.8) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-16 12:01:50,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 3124 transitions. [2022-11-16 12:01:50,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-16 12:01:50,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:50,550 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:50,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 12:01:50,550 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:50,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:50,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1923233025, now seen corresponding path program 1 times [2022-11-16 12:01:50,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:50,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173808017] [2022-11-16 12:01:50,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:50,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:01:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:01:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:01:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:01:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:01:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:01:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:01:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:01:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:01:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 12:01:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:01:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 12:01:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:52,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:01:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:52,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 12:01:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:52,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 12:01:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-16 12:01:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:52,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:01:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 12:01:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:52,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 12:01:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 12:01:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 12:01:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:52,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-16 12:01:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:52,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-16 12:01:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 20 proven. 39 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-16 12:01:52,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:52,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173808017] [2022-11-16 12:01:52,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173808017] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:01:52,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067536769] [2022-11-16 12:01:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:52,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:52,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:52,415 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:52,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:01:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:53,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 2819 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-16 12:01:53,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 112 proven. 22 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-16 12:01:54,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:55,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-16 12:01:55,529 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 12:01:55,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-11-16 12:01:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 36 proven. 24 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-16 12:01:55,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067536769] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:55,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:01:55,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 28 [2022-11-16 12:01:55,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552248844] [2022-11-16 12:01:55,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:55,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:01:55,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:55,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:01:55,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:01:55,577 INFO L87 Difference]: Start difference. First operand 2076 states and 3124 transitions. Second operand has 28 states, 26 states have (on average 4.961538461538462) internal successors, (129), 24 states have internal predecessors, (129), 9 states have call successors, (55), 9 states have call predecessors, (55), 7 states have return successors, (51), 7 states have call predecessors, (51), 9 states have call successors, (51) [2022-11-16 12:01:59,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:59,486 INFO L93 Difference]: Finished difference Result 2590 states and 3831 transitions. [2022-11-16 12:01:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:01:59,487 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.961538461538462) internal successors, (129), 24 states have internal predecessors, (129), 9 states have call successors, (55), 9 states have call predecessors, (55), 7 states have return successors, (51), 7 states have call predecessors, (51), 9 states have call successors, (51) Word has length 161 [2022-11-16 12:01:59,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:59,500 INFO L225 Difference]: With dead ends: 2590 [2022-11-16 12:01:59,501 INFO L226 Difference]: Without dead ends: 2209 [2022-11-16 12:01:59,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 340 SyntacticMatches, 24 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=434, Invalid=2116, Unknown=0, NotChecked=0, Total=2550 [2022-11-16 12:01:59,506 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 307 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 480 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:59,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 563 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1859 Invalid, 0 Unknown, 480 Unchecked, 2.0s Time] [2022-11-16 12:01:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2022-11-16 12:02:00,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 2084. [2022-11-16 12:02:00,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 1238 states have (on average 1.1639741518578353) internal successors, (1441), 1263 states have internal predecessors, (1441), 678 states have call successors, (678), 134 states have call predecessors, (678), 167 states have return successors, (968), 686 states have call predecessors, (968), 673 states have call successors, (968) [2022-11-16 12:02:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 3087 transitions. [2022-11-16 12:02:00,101 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 3087 transitions. Word has length 161 [2022-11-16 12:02:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:00,101 INFO L495 AbstractCegarLoop]: Abstraction has 2084 states and 3087 transitions. [2022-11-16 12:02:00,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.961538461538462) internal successors, (129), 24 states have internal predecessors, (129), 9 states have call successors, (55), 9 states have call predecessors, (55), 7 states have return successors, (51), 7 states have call predecessors, (51), 9 states have call successors, (51) [2022-11-16 12:02:00,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 3087 transitions. [2022-11-16 12:02:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-16 12:02:00,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:00,108 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 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] [2022-11-16 12:02:00,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-16 12:02:00,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 12:02:00,318 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:00,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:00,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1126112523, now seen corresponding path program 1 times [2022-11-16 12:02:00,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:00,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908915439] [2022-11-16 12:02:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:00,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:03,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:02:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:03,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:02:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:02:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:03,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:02:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:03,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:02:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:03,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:02:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:03,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:02:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:02:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 12:02:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 12:02:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:02:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:02:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:02:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:02:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 12:02:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-16 12:02:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-16 12:02:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-16 12:02:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-16 12:02:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-16 12:02:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-16 12:02:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-16 12:02:04,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:04,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908915439] [2022-11-16 12:02:04,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908915439] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:02:04,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296231233] [2022-11-16 12:02:04,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:04,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:02:04,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:02:04,484 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:02:04,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 12:02:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:05,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-16 12:02:05,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:02:05,378 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 [2022-11-16 12:02:05,920 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 17 treesize of output 13 [2022-11-16 12:02:05,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-16 12:02:06,199 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 [2022-11-16 12:02:06,208 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:02:06,213 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_arrayElimArr_2 (Array Int Int)) (|save_byte_from_array_~storage#1.base| Int)) (= (store |c_old(#memory_$Pointer$.offset)| |save_byte_from_array_~storage#1.base| v_arrayElimArr_2) |c_#memory_$Pointer$.offset|)) is different from true [2022-11-16 12:02:06,231 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:02:06,232 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 16 treesize of output 22 [2022-11-16 12:02:06,238 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 7 treesize of output 3 [2022-11-16 12:02:06,427 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 [2022-11-16 12:02:06,435 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:02:06,440 WARN L855 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int) (v_arrayElimArr_3 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |save_byte_from_array_~storage#1.base| v_arrayElimArr_3) |c_#memory_$Pointer$.offset|)) is different from true [2022-11-16 12:02:06,449 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 [2022-11-16 12:02:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 84 proven. 71 refuted. 0 times theorem prover too weak. 51 trivial. 2 not checked. [2022-11-16 12:02:29,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:02:30,251 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 12:02:30,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-11-16 12:02:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-16 12:02:30,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296231233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:02:30,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:02:30,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 32, 11] total 62 [2022-11-16 12:02:30,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801416953] [2022-11-16 12:02:30,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:02:30,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-16 12:02:30,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:30,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-16 12:02:30,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=3337, Unknown=5, NotChecked=234, Total=3782 [2022-11-16 12:02:30,523 INFO L87 Difference]: Start difference. First operand 2084 states and 3087 transitions. Second operand has 62 states, 56 states have (on average 3.4107142857142856) internal successors, (191), 54 states have internal predecessors, (191), 21 states have call successors, (63), 10 states have call predecessors, (63), 15 states have return successors, (59), 18 states have call predecessors, (59), 19 states have call successors, (59) [2022-11-16 12:03:02,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:02,669 INFO L93 Difference]: Finished difference Result 3660 states and 5456 transitions. [2022-11-16 12:03:02,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-16 12:03:02,670 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 56 states have (on average 3.4107142857142856) internal successors, (191), 54 states have internal predecessors, (191), 21 states have call successors, (63), 10 states have call predecessors, (63), 15 states have return successors, (59), 18 states have call predecessors, (59), 19 states have call successors, (59) Word has length 158 [2022-11-16 12:03:02,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:02,683 INFO L225 Difference]: With dead ends: 3660 [2022-11-16 12:03:02,683 INFO L226 Difference]: Without dead ends: 2516 [2022-11-16 12:03:02,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 325 SyntacticMatches, 14 SemanticMatches, 127 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4769 ImplicationChecksByTransitivity, 43.9s TimeCoverageRelationStatistics Valid=983, Invalid=14975, Unknown=52, NotChecked=502, Total=16512 [2022-11-16 12:03:02,692 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 705 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 11697 mSolverCounterSat, 1273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 16552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1273 IncrementalHoareTripleChecker+Valid, 11697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3582 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:02,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 2135 Invalid, 16552 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1273 Valid, 11697 Invalid, 0 Unknown, 3582 Unchecked, 11.9s Time] [2022-11-16 12:03:02,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2022-11-16 12:03:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 2088. [2022-11-16 12:03:03,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 1272 states have (on average 1.1525157232704402) internal successors, (1466), 1294 states have internal predecessors, (1466), 635 states have call successors, (635), 152 states have call predecessors, (635), 180 states have return successors, (849), 641 states have call predecessors, (849), 630 states have call successors, (849) [2022-11-16 12:03:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2950 transitions. [2022-11-16 12:03:03,135 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2950 transitions. Word has length 158 [2022-11-16 12:03:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:03,136 INFO L495 AbstractCegarLoop]: Abstraction has 2088 states and 2950 transitions. [2022-11-16 12:03:03,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 56 states have (on average 3.4107142857142856) internal successors, (191), 54 states have internal predecessors, (191), 21 states have call successors, (63), 10 states have call predecessors, (63), 15 states have return successors, (59), 18 states have call predecessors, (59), 19 states have call successors, (59) [2022-11-16 12:03:03,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2950 transitions. [2022-11-16 12:03:03,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-16 12:03:03,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:03,143 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 4, 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] [2022-11-16 12:03:03,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:03,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:03,354 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:03,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:03,355 INFO L85 PathProgramCache]: Analyzing trace with hash -205239546, now seen corresponding path program 1 times [2022-11-16 12:03:03,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:03,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419900870] [2022-11-16 12:03:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:03,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:04,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:03:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:03:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:03:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:03:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:03:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:03:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:03:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:03:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 12:03:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 12:03:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:03:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 12:03:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:03:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 12:03:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 12:03:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-16 12:03:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 12:03:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-16 12:03:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 12:03:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-16 12:03:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-16 12:03:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-16 12:03:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-16 12:03:05,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:05,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419900870] [2022-11-16 12:03:05,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419900870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:03:05,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650988919] [2022-11-16 12:03:05,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:05,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:05,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:05,679 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:05,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 12:03:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:06,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:03:06,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:06,484 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-11-16 12:03:06,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:03:06,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650988919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:06,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:03:06,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19] total 21 [2022-11-16 12:03:06,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356691365] [2022-11-16 12:03:06,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:06,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:03:06,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:06,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:03:06,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:03:06,487 INFO L87 Difference]: Start difference. First operand 2088 states and 2950 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-16 12:03:07,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:07,003 INFO L93 Difference]: Finished difference Result 3463 states and 5007 transitions. [2022-11-16 12:03:07,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:03:07,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 168 [2022-11-16 12:03:07,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:07,013 INFO L225 Difference]: With dead ends: 3463 [2022-11-16 12:03:07,013 INFO L226 Difference]: Without dead ends: 2010 [2022-11-16 12:03:07,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:03:07,023 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 3 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:07,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 462 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-16 12:03:07,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-11-16 12:03:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 2009. [2022-11-16 12:03:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1225 states have (on average 1.1477551020408163) internal successors, (1406), 1243 states have internal predecessors, (1406), 609 states have call successors, (609), 150 states have call predecessors, (609), 174 states have return successors, (761), 615 states have call predecessors, (761), 604 states have call successors, (761) [2022-11-16 12:03:07,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2776 transitions. [2022-11-16 12:03:07,405 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2776 transitions. Word has length 168 [2022-11-16 12:03:07,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:07,405 INFO L495 AbstractCegarLoop]: Abstraction has 2009 states and 2776 transitions. [2022-11-16 12:03:07,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-16 12:03:07,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2776 transitions. [2022-11-16 12:03:07,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-16 12:03:07,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:07,409 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:07,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:07,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:07,610 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:07,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1222536911, now seen corresponding path program 1 times [2022-11-16 12:03:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:07,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694670643] [2022-11-16 12:03:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:07,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:03:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:03:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:03:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:03:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:03:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:03:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:03:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:03:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 12:03:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 12:03:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:03:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 12:03:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:03:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 12:03:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 12:03:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-16 12:03:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 12:03:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-16 12:03:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 12:03:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-16 12:03:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-16 12:03:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-16 12:03:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-16 12:03:08,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:08,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694670643] [2022-11-16 12:03:08,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694670643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:08,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:08,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:03:08,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798186773] [2022-11-16 12:03:08,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:08,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:03:08,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:08,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:03:08,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:03:08,784 INFO L87 Difference]: Start difference. First operand 2009 states and 2776 transitions. Second operand has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-16 12:03:10,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:10,707 INFO L93 Difference]: Finished difference Result 2043 states and 2817 transitions. [2022-11-16 12:03:10,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:03:10,708 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 170 [2022-11-16 12:03:10,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:10,714 INFO L225 Difference]: With dead ends: 2043 [2022-11-16 12:03:10,714 INFO L226 Difference]: Without dead ends: 2041 [2022-11-16 12:03:10,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:03:10,715 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 122 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:10,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 667 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 12:03:10,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2022-11-16 12:03:11,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 2028. [2022-11-16 12:03:11,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 1234 states have (on average 1.146677471636953) internal successors, (1415), 1252 states have internal predecessors, (1415), 616 states have call successors, (616), 153 states have call predecessors, (616), 177 states have return successors, (768), 622 states have call predecessors, (768), 611 states have call successors, (768) [2022-11-16 12:03:11,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 2799 transitions. [2022-11-16 12:03:11,174 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 2799 transitions. Word has length 170 [2022-11-16 12:03:11,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:11,175 INFO L495 AbstractCegarLoop]: Abstraction has 2028 states and 2799 transitions. [2022-11-16 12:03:11,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-16 12:03:11,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 2799 transitions. [2022-11-16 12:03:11,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-16 12:03:11,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:11,178 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:11,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:03:11,179 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:11,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:11,179 INFO L85 PathProgramCache]: Analyzing trace with hash -565815316, now seen corresponding path program 1 times [2022-11-16 12:03:11,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:11,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316926140] [2022-11-16 12:03:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:11,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:03:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:03:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:03:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:03:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:03:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:03:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 12:03:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 12:03:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:03:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:03:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:03:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:03:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-16 12:03:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-16 12:03:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-16 12:03:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 12:03:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-16 12:03:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-16 12:03:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-16 12:03:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-11-16 12:03:12,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:12,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316926140] [2022-11-16 12:03:12,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316926140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:12,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:12,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 12:03:12,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929098289] [2022-11-16 12:03:12,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:12,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:03:12,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:12,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:03:12,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:03:12,460 INFO L87 Difference]: Start difference. First operand 2028 states and 2799 transitions. Second operand has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-16 12:03:14,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:14,611 INFO L93 Difference]: Finished difference Result 2050 states and 2824 transitions. [2022-11-16 12:03:14,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:03:14,612 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 166 [2022-11-16 12:03:14,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:14,621 INFO L225 Difference]: With dead ends: 2050 [2022-11-16 12:03:14,621 INFO L226 Difference]: Without dead ends: 2048 [2022-11-16 12:03:14,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:03:14,624 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 256 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:14,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 662 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 12:03:14,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2022-11-16 12:03:15,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 2044. [2022-11-16 12:03:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1243 states have (on average 1.1456154465004023) internal successors, (1424), 1261 states have internal predecessors, (1424), 620 states have call successors, (620), 156 states have call predecessors, (620), 180 states have return successors, (772), 626 states have call predecessors, (772), 615 states have call successors, (772) [2022-11-16 12:03:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2816 transitions. [2022-11-16 12:03:15,230 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2816 transitions. Word has length 166 [2022-11-16 12:03:15,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:15,231 INFO L495 AbstractCegarLoop]: Abstraction has 2044 states and 2816 transitions. [2022-11-16 12:03:15,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-16 12:03:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2816 transitions. [2022-11-16 12:03:15,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-16 12:03:15,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:15,239 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:15,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 12:03:15,239 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:15,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:15,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1843790527, now seen corresponding path program 1 times [2022-11-16 12:03:15,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:15,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138144988] [2022-11-16 12:03:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:15,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:03:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:03:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:03:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:03:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:03:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:03:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:03:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:03:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 12:03:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 12:03:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:03:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 12:03:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:03:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 12:03:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 12:03:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:03:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:03:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 12:03:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:18,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 12:03:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:18,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:03:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:18,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 12:03:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:18,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:03:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:18,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 12:03:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 24 proven. 42 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-16 12:03:18,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:18,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138144988] [2022-11-16 12:03:18,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138144988] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:03:18,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636926277] [2022-11-16 12:03:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:18,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:18,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:18,150 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:18,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 12:03:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:18,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-16 12:03:18,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:19,071 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 [2022-11-16 12:03:19,076 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 [2022-11-16 12:03:20,204 WARN L855 $PredicateComparison]: unable to prove that (exists ((ensure_byte_cursor_has_allocated_buffer_member_~cursor.base Int)) (let ((.cse0 (+ |c_ensure_byte_cursor_has_allocated_buffer_member_#in~cursor.offset| 8))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| ensure_byte_cursor_has_allocated_buffer_member_~cursor.base (store (select |c_old(#memory_$Pointer$.base)| ensure_byte_cursor_has_allocated_buffer_member_~cursor.base) .cse0 0))) (= (store |c_old(#memory_$Pointer$.offset)| ensure_byte_cursor_has_allocated_buffer_member_~cursor.base (store (select |c_old(#memory_$Pointer$.offset)| ensure_byte_cursor_has_allocated_buffer_member_~cursor.base) .cse0 0)) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-16 12:03:20,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:03:20,231 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:03:20,231 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 21 treesize of output 20 [2022-11-16 12:03:20,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:03:20,249 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:03:20,249 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 21 treesize of output 20 [2022-11-16 12:03:20,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:03:20,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:03:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 139 proven. 18 refuted. 0 times theorem prover too weak. 94 trivial. 2 not checked. [2022-11-16 12:03:20,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:03:22,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636926277] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:03:22,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:03:22,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 16] total 38 [2022-11-16 12:03:22,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206378157] [2022-11-16 12:03:22,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:03:22,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 12:03:22,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:22,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 12:03:22,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1521, Unknown=1, NotChecked=78, Total=1722 [2022-11-16 12:03:22,130 INFO L87 Difference]: Start difference. First operand 2044 states and 2816 transitions. Second operand has 38 states, 36 states have (on average 3.9722222222222223) internal successors, (143), 35 states have internal predecessors, (143), 18 states have call successors, (52), 6 states have call predecessors, (52), 12 states have return successors, (51), 16 states have call predecessors, (51), 18 states have call successors, (51) [2022-11-16 12:03:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:33,241 INFO L93 Difference]: Finished difference Result 3180 states and 4612 transitions. [2022-11-16 12:03:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 12:03:33,242 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 3.9722222222222223) internal successors, (143), 35 states have internal predecessors, (143), 18 states have call successors, (52), 6 states have call predecessors, (52), 12 states have return successors, (51), 16 states have call predecessors, (51), 18 states have call successors, (51) Word has length 182 [2022-11-16 12:03:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:33,252 INFO L225 Difference]: With dead ends: 3180 [2022-11-16 12:03:33,252 INFO L226 Difference]: Without dead ends: 2683 [2022-11-16 12:03:33,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 332 SyntacticMatches, 15 SemanticMatches, 69 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=409, Invalid=4424, Unknown=1, NotChecked=136, Total=4970 [2022-11-16 12:03:33,257 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 420 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 7947 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 9507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 7947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1086 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:33,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1635 Invalid, 9507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [474 Valid, 7947 Invalid, 0 Unknown, 1086 Unchecked, 8.7s Time] [2022-11-16 12:03:33,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2022-11-16 12:03:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2069. [2022-11-16 12:03:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 1265 states have (on average 1.1422924901185771) internal successors, (1445), 1282 states have internal predecessors, (1445), 615 states have call successors, (615), 162 states have call predecessors, (615), 188 states have return successors, (777), 624 states have call predecessors, (777), 611 states have call successors, (777) [2022-11-16 12:03:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2837 transitions. [2022-11-16 12:03:33,935 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2837 transitions. Word has length 182 [2022-11-16 12:03:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:33,935 INFO L495 AbstractCegarLoop]: Abstraction has 2069 states and 2837 transitions. [2022-11-16 12:03:33,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 3.9722222222222223) internal successors, (143), 35 states have internal predecessors, (143), 18 states have call successors, (52), 6 states have call predecessors, (52), 12 states have return successors, (51), 16 states have call predecessors, (51), 18 states have call successors, (51) [2022-11-16 12:03:33,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2837 transitions. [2022-11-16 12:03:33,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-16 12:03:33,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:33,943 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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] [2022-11-16 12:03:33,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:34,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-16 12:03:34,155 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:34,155 INFO L85 PathProgramCache]: Analyzing trace with hash 215353683, now seen corresponding path program 1 times [2022-11-16 12:03:34,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:34,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735889126] [2022-11-16 12:03:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:34,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:03:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:03:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:03:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:03:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:03:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:03:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:03:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 12:03:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 12:03:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 12:03:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 12:03:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 12:03:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-16 12:03:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:03:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:03:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:03:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 12:03:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:35,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 12:03:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:35,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:03:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 12:03:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:03:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:35,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 12:03:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-16 12:03:35,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:35,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735889126] [2022-11-16 12:03:35,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735889126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:03:35,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277620895] [2022-11-16 12:03:35,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:35,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:35,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:35,029 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:35,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 12:03:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:35,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-16 12:03:35,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:35,824 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 [2022-11-16 12:03:35,829 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 [2022-11-16 12:03:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-16 12:03:36,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:03:36,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277620895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:36,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:03:36,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2022-11-16 12:03:36,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682571829] [2022-11-16 12:03:36,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:36,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:03:36,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:03:36,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:03:36,338 INFO L87 Difference]: Start difference. First operand 2069 states and 2837 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-16 12:03:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:37,050 INFO L93 Difference]: Finished difference Result 3251 states and 4478 transitions. [2022-11-16 12:03:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:03:37,051 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 185 [2022-11-16 12:03:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:37,062 INFO L225 Difference]: With dead ends: 3251 [2022-11-16 12:03:37,062 INFO L226 Difference]: Without dead ends: 2142 [2022-11-16 12:03:37,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:03:37,069 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 38 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:37,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1616 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 205 Unchecked, 0.2s Time] [2022-11-16 12:03:37,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2022-11-16 12:03:37,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2013. [2022-11-16 12:03:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 1231 states have (on average 1.1421608448415923) internal successors, (1406), 1247 states have internal predecessors, (1406), 598 states have call successors, (598), 160 states have call predecessors, (598), 183 states have return successors, (745), 605 states have call predecessors, (745), 594 states have call successors, (745) [2022-11-16 12:03:37,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 2749 transitions. [2022-11-16 12:03:37,695 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 2749 transitions. Word has length 185 [2022-11-16 12:03:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:37,695 INFO L495 AbstractCegarLoop]: Abstraction has 2013 states and 2749 transitions. [2022-11-16 12:03:37,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-16 12:03:37,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 2749 transitions. [2022-11-16 12:03:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-16 12:03:37,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:37,701 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:37,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:37,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-16 12:03:37,921 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:37,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:37,921 INFO L85 PathProgramCache]: Analyzing trace with hash 98478210, now seen corresponding path program 2 times [2022-11-16 12:03:37,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:37,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114343295] [2022-11-16 12:03:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:37,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:03:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:03:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:03:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:03:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:03:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:03:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:03:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:03:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 12:03:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 12:03:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:03:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 12:03:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 12:03:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-16 12:03:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:03:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:03:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 12:03:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 12:03:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:03:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 12:03:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:03:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 12:03:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 17 proven. 27 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-16 12:03:38,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:38,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114343295] [2022-11-16 12:03:38,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114343295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:03:38,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916788217] [2022-11-16 12:03:38,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:03:38,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:38,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:38,850 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:38,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 12:03:40,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:03:40,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:03:40,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-16 12:03:40,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:40,201 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 [2022-11-16 12:03:40,206 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 [2022-11-16 12:03:59,425 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:05:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 158 proven. 18 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-16 12:05:01,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:02,311 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 30 treesize of output 24 [2022-11-16 12:05:02,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:02,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:05:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 31 proven. 18 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-16 12:05:02,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916788217] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:02,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:05:02,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 13] total 33 [2022-11-16 12:05:02,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164269149] [2022-11-16 12:05:02,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:02,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-16 12:05:02,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:02,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-16 12:05:02,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=953, Unknown=6, NotChecked=0, Total=1056 [2022-11-16 12:05:02,367 INFO L87 Difference]: Start difference. First operand 2013 states and 2749 transitions. Second operand has 33 states, 32 states have (on average 5.15625) internal successors, (165), 30 states have internal predecessors, (165), 11 states have call successors, (65), 8 states have call predecessors, (65), 12 states have return successors, (63), 11 states have call predecessors, (63), 11 states have call successors, (63) [2022-11-16 12:05:37,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:37,597 INFO L93 Difference]: Finished difference Result 3191 states and 4387 transitions. [2022-11-16 12:05:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 12:05:37,598 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.15625) internal successors, (165), 30 states have internal predecessors, (165), 11 states have call successors, (65), 8 states have call predecessors, (65), 12 states have return successors, (63), 11 states have call predecessors, (63), 11 states have call successors, (63) Word has length 179 [2022-11-16 12:05:37,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:37,604 INFO L225 Difference]: With dead ends: 3191 [2022-11-16 12:05:37,604 INFO L226 Difference]: Without dead ends: 1998 [2022-11-16 12:05:37,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 371 SyntacticMatches, 17 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 112.3s TimeCoverageRelationStatistics Valid=494, Invalid=4316, Unknown=20, NotChecked=0, Total=4830 [2022-11-16 12:05:37,608 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 205 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 3348 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 4387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 931 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:37,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 1261 Invalid, 4387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3348 Invalid, 0 Unknown, 931 Unchecked, 2.8s Time] [2022-11-16 12:05:37,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2022-11-16 12:05:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1886. [2022-11-16 12:05:37,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1175 states have (on average 1.1336170212765957) internal successors, (1332), 1195 states have internal predecessors, (1332), 525 states have call successors, (525), 159 states have call predecessors, (525), 185 states have return successors, (644), 531 states have call predecessors, (644), 521 states have call successors, (644) [2022-11-16 12:05:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2501 transitions. [2022-11-16 12:05:37,971 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2501 transitions. Word has length 179 [2022-11-16 12:05:37,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:37,971 INFO L495 AbstractCegarLoop]: Abstraction has 1886 states and 2501 transitions. [2022-11-16 12:05:37,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.15625) internal successors, (165), 30 states have internal predecessors, (165), 11 states have call successors, (65), 8 states have call predecessors, (65), 12 states have return successors, (63), 11 states have call predecessors, (63), 11 states have call successors, (63) [2022-11-16 12:05:37,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2501 transitions. [2022-11-16 12:05:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-16 12:05:37,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:37,977 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:37,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:38,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-16 12:05:38,178 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:38,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:38,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1555880650, now seen corresponding path program 1 times [2022-11-16 12:05:38,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:38,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922851802] [2022-11-16 12:05:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:38,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:40,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:05:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:40,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:05:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:40,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:05:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:05:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:05:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:05:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:05:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:05:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:05:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 12:05:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:05:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:05:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:05:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:05:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 12:05:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:05:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:05:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 12:05:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 12:05:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:05:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:05:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:05:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 12:05:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 12:05:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:05:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 12:05:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:05:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 12:05:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-16 12:05:42,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:42,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922851802] [2022-11-16 12:05:42,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922851802] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:42,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516507289] [2022-11-16 12:05:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:42,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:42,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:42,002 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:42,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 12:05:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:42,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-16 12:05:42,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:43,017 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 [2022-11-16 12:05:43,686 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 [2022-11-16 12:05:43,706 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 [2022-11-16 12:05:43,709 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 [2022-11-16 12:05:43,716 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|save_byte_from_array_~storage#1.base| Int) (v_ArrVal_3480 (Array Int Int))) (= (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| v_ArrVal_3480) |c_#memory_int|))) is different from true [2022-11-16 12:05:43,740 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:05:43,740 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 16 treesize of output 22 [2022-11-16 12:05:43,745 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 7 treesize of output 5 [2022-11-16 12:05:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 71 proven. 150 refuted. 0 times theorem prover too weak. 62 trivial. 2 not checked. [2022-11-16 12:05:56,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:00,733 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 50 treesize of output 44 [2022-11-16 12:06:00,739 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 55 treesize of output 49 [2022-11-16 12:06:00,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516507289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:00,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:06:00,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 36] total 58 [2022-11-16 12:06:00,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470558929] [2022-11-16 12:06:00,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:00,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-16 12:06:00,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:00,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-16 12:06:00,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=5187, Unknown=2, NotChecked=146, Total=5700 [2022-11-16 12:06:00,881 INFO L87 Difference]: Start difference. First operand 1886 states and 2501 transitions. Second operand has 58 states, 52 states have (on average 3.5) internal successors, (182), 52 states have internal predecessors, (182), 21 states have call successors, (56), 12 states have call predecessors, (56), 19 states have return successors, (55), 17 states have call predecessors, (55), 20 states have call successors, (55) [2022-11-16 12:06:16,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:16,375 INFO L93 Difference]: Finished difference Result 2749 states and 3634 transitions. [2022-11-16 12:06:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-11-16 12:06:16,376 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 52 states have (on average 3.5) internal successors, (182), 52 states have internal predecessors, (182), 21 states have call successors, (56), 12 states have call predecessors, (56), 19 states have return successors, (55), 17 states have call predecessors, (55), 20 states have call successors, (55) Word has length 193 [2022-11-16 12:06:16,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:16,383 INFO L225 Difference]: With dead ends: 2749 [2022-11-16 12:06:16,383 INFO L226 Difference]: Without dead ends: 2378 [2022-11-16 12:06:16,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 300 SyntacticMatches, 14 SemanticMatches, 145 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6885 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=1660, Invalid=19502, Unknown=12, NotChecked=288, Total=21462 [2022-11-16 12:06:16,388 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 836 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 5698 mSolverCounterSat, 795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 10772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 795 IncrementalHoareTripleChecker+Valid, 5698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4279 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:16,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1883 Invalid, 10772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [795 Valid, 5698 Invalid, 0 Unknown, 4279 Unchecked, 6.2s Time] [2022-11-16 12:06:16,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2022-11-16 12:06:16,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 2164. [2022-11-16 12:06:16,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 1376 states have (on average 1.1300872093023255) internal successors, (1555), 1398 states have internal predecessors, (1555), 570 states have call successors, (570), 186 states have call predecessors, (570), 217 states have return successors, (690), 579 states have call predecessors, (690), 566 states have call successors, (690) [2022-11-16 12:06:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 2815 transitions. [2022-11-16 12:06:16,981 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 2815 transitions. Word has length 193 [2022-11-16 12:06:16,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:16,981 INFO L495 AbstractCegarLoop]: Abstraction has 2164 states and 2815 transitions. [2022-11-16 12:06:16,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 52 states have (on average 3.5) internal successors, (182), 52 states have internal predecessors, (182), 21 states have call successors, (56), 12 states have call predecessors, (56), 19 states have return successors, (55), 17 states have call predecessors, (55), 20 states have call successors, (55) [2022-11-16 12:06:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 2815 transitions. [2022-11-16 12:06:16,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-16 12:06:16,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:16,986 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:16,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:17,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:17,187 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:17,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash -258583050, now seen corresponding path program 2 times [2022-11-16 12:06:17,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:17,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170499696] [2022-11-16 12:06:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:17,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:06:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:06:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:06:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:06:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:06:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:06:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:06:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:06:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:06:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 12:06:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:06:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:06:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:06:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:06:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 12:06:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:06:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:06:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 12:06:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 12:06:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:06:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:06:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 12:06:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 12:06:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 12:06:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:06:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:06:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 12:06:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 12:06:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-16 12:06:18,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:18,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170499696] [2022-11-16 12:06:18,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170499696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:18,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635188631] [2022-11-16 12:06:18,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:06:18,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:18,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:18,909 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:18,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 12:06:20,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:06:20,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:06:20,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-16 12:06:20,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:20,062 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 10 treesize of output 8 [2022-11-16 12:06:20,162 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 [2022-11-16 12:06:20,166 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 [2022-11-16 12:06:21,053 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3633 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_cursor_has_allocated_buffer_member_#in~cursor.base| v_ArrVal_3633))) (exists ((v_ArrVal_3632 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_byte_cursor_has_allocated_buffer_member_#in~cursor.base| v_ArrVal_3632) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:06:21,067 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 16 treesize of output 18 [2022-11-16 12:06:21,078 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 16 treesize of output 18 [2022-11-16 12:06:21,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:06:21,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:06:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 155 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 2 not checked. [2022-11-16 12:06:21,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:21,792 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 8 |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.offset|))) (and (forall ((v_ArrVal_3639 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#rhs~0#1.base| v_ArrVal_3639) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.base|) .cse0) 0)) (forall ((v_ArrVal_3638 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#rhs~0#1.base| v_ArrVal_3638) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.base|) .cse0) 0)))) is different from false [2022-11-16 12:06:21,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635188631] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:21,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:06:21,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2022-11-16 12:06:21,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863007772] [2022-11-16 12:06:21,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:21,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 12:06:21,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:21,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 12:06:21,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=849, Unknown=2, NotChecked=118, Total=1056 [2022-11-16 12:06:21,796 INFO L87 Difference]: Start difference. First operand 2164 states and 2815 transitions. Second operand has 30 states, 28 states have (on average 5.0) internal successors, (140), 26 states have internal predecessors, (140), 15 states have call successors, (56), 7 states have call predecessors, (56), 9 states have return successors, (55), 13 states have call predecessors, (55), 15 states have call successors, (55) [2022-11-16 12:06:26,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:26,945 INFO L93 Difference]: Finished difference Result 2731 states and 3600 transitions. [2022-11-16 12:06:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:06:26,946 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 5.0) internal successors, (140), 26 states have internal predecessors, (140), 15 states have call successors, (56), 7 states have call predecessors, (56), 9 states have return successors, (55), 13 states have call predecessors, (55), 15 states have call successors, (55) Word has length 193 [2022-11-16 12:06:26,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:26,951 INFO L225 Difference]: With dead ends: 2731 [2022-11-16 12:06:26,951 INFO L226 Difference]: Without dead ends: 2236 [2022-11-16 12:06:26,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 345 SyntacticMatches, 13 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=274, Invalid=2591, Unknown=5, NotChecked=210, Total=3080 [2022-11-16 12:06:26,953 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 343 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 3943 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 4924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 3943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 604 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:26,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 873 Invalid, 4924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 3943 Invalid, 0 Unknown, 604 Unchecked, 3.6s Time] [2022-11-16 12:06:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-11-16 12:06:27,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 2179. [2022-11-16 12:06:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2179 states, 1387 states have (on average 1.129776496034607) internal successors, (1567), 1409 states have internal predecessors, (1567), 572 states have call successors, (572), 188 states have call predecessors, (572), 219 states have return successors, (688), 581 states have call predecessors, (688), 568 states have call successors, (688) [2022-11-16 12:06:27,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 2827 transitions. [2022-11-16 12:06:27,552 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 2827 transitions. Word has length 193 [2022-11-16 12:06:27,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:27,552 INFO L495 AbstractCegarLoop]: Abstraction has 2179 states and 2827 transitions. [2022-11-16 12:06:27,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 5.0) internal successors, (140), 26 states have internal predecessors, (140), 15 states have call successors, (56), 7 states have call predecessors, (56), 9 states have return successors, (55), 13 states have call predecessors, (55), 15 states have call successors, (55) [2022-11-16 12:06:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 2827 transitions. [2022-11-16 12:06:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-16 12:06:27,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:27,558 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:27,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:27,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:27,769 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:27,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:27,770 INFO L85 PathProgramCache]: Analyzing trace with hash -396833003, now seen corresponding path program 1 times [2022-11-16 12:06:27,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:27,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493750798] [2022-11-16 12:06:27,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:27,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:06:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:06:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:06:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:06:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:06:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:06:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:06:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:06:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 12:06:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 12:06:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:06:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:06:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:06:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 12:06:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:29,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:06:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:29,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:06:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:29,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 12:06:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:29,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 12:06:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:29,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:06:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:29,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 12:06:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:29,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:06:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 12:06:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:29,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 12:06:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 28 proven. 35 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-16 12:06:29,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:29,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493750798] [2022-11-16 12:06:29,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493750798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:29,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124849192] [2022-11-16 12:06:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:29,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:29,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:29,555 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:29,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-16 12:06:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:30,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-16 12:06:30,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:30,349 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 10 treesize of output 8 [2022-11-16 12:06:30,800 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 28 treesize of output 27 [2022-11-16 12:06:30,878 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3826 (Array Int Int))) (= (store |c_old(#memory_int)| |c_save_byte_from_array_~storage#1.base| v_ArrVal_3826) |c_#memory_int|)) is different from true [2022-11-16 12:06:30,881 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 [2022-11-16 12:06:30,892 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3827 (Array Int Int)) (|save_byte_from_array_~storage#1.base| Int)) (= (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| v_ArrVal_3827) |c_#memory_int|)) is different from true [2022-11-16 12:06:30,919 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:06:30,920 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 28 treesize of output 31 [2022-11-16 12:06:30,925 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 16 treesize of output 12 [2022-11-16 12:06:30,963 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3828 (Array Int Int))) (= (store |c_old(#memory_int)| |c_save_byte_from_array_~storage#1.base| v_ArrVal_3828) |c_#memory_int|)) is different from true [2022-11-16 12:06:30,966 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 [2022-11-16 12:06:30,973 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3829 (Array Int Int)) (|save_byte_from_array_~storage#1.base| Int)) (= (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| v_ArrVal_3829) |c_#memory_int|)) is different from true [2022-11-16 12:06:30,982 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 [2022-11-16 12:06:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 118 proven. 58 refuted. 0 times theorem prover too weak. 56 trivial. 4 not checked. [2022-11-16 12:06:32,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-16 12:06:33,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124849192] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:06:33,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:06:33,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22, 9] total 35 [2022-11-16 12:06:33,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576384382] [2022-11-16 12:06:33,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:33,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 12:06:33,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:33,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 12:06:33,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=823, Unknown=4, NotChecked=244, Total=1190 [2022-11-16 12:06:33,109 INFO L87 Difference]: Start difference. First operand 2179 states and 2827 transitions. Second operand has 35 states, 34 states have (on average 4.705882352941177) internal successors, (160), 32 states have internal predecessors, (160), 13 states have call successors, (51), 8 states have call predecessors, (51), 9 states have return successors, (46), 10 states have call predecessors, (46), 13 states have call successors, (46) [2022-11-16 12:06:38,923 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3826 (Array Int Int))) (= (store |c_old(#memory_int)| |c_save_byte_from_array_~storage#1.base| v_ArrVal_3826) |c_#memory_int|)) (exists ((v_ArrVal_3828 (Array Int Int))) (= (store |c_old(#memory_int)| |c_save_byte_from_array_~storage#1.base| v_ArrVal_3828) |c_#memory_int|))) is different from true [2022-11-16 12:06:38,958 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3829 (Array Int Int)) (|save_byte_from_array_~storage#1.base| Int)) (= (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| v_ArrVal_3829) |c_#memory_int|)) (exists ((v_ArrVal_3827 (Array Int Int)) (|save_byte_from_array_~storage#1.base| Int)) (= (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| v_ArrVal_3827) |c_#memory_int|))) is different from true [2022-11-16 12:06:43,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:43,432 INFO L93 Difference]: Finished difference Result 3145 states and 4160 transitions. [2022-11-16 12:06:43,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 12:06:43,433 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 4.705882352941177) internal successors, (160), 32 states have internal predecessors, (160), 13 states have call successors, (51), 8 states have call predecessors, (51), 9 states have return successors, (46), 10 states have call predecessors, (46), 13 states have call successors, (46) Word has length 178 [2022-11-16 12:06:43,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:43,439 INFO L225 Difference]: With dead ends: 3145 [2022-11-16 12:06:43,439 INFO L226 Difference]: Without dead ends: 2615 [2022-11-16 12:06:43,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 372 SyntacticMatches, 18 SemanticMatches, 56 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=423, Invalid=2221, Unknown=32, NotChecked=630, Total=3306 [2022-11-16 12:06:43,442 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 448 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 3533 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 5763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 3533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1804 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:43,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1028 Invalid, 5763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 3533 Invalid, 0 Unknown, 1804 Unchecked, 4.1s Time] [2022-11-16 12:06:43,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2022-11-16 12:06:43,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2302. [2022-11-16 12:06:43,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 1468 states have (on average 1.1307901907356948) internal successors, (1660), 1486 states have internal predecessors, (1660), 601 states have call successors, (601), 195 states have call predecessors, (601), 232 states have return successors, (727), 620 states have call predecessors, (727), 597 states have call successors, (727) [2022-11-16 12:06:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 2988 transitions. [2022-11-16 12:06:43,904 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 2988 transitions. Word has length 178 [2022-11-16 12:06:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:43,905 INFO L495 AbstractCegarLoop]: Abstraction has 2302 states and 2988 transitions. [2022-11-16 12:06:43,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 4.705882352941177) internal successors, (160), 32 states have internal predecessors, (160), 13 states have call successors, (51), 8 states have call predecessors, (51), 9 states have return successors, (46), 10 states have call predecessors, (46), 13 states have call successors, (46) [2022-11-16 12:06:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 2988 transitions. [2022-11-16 12:06:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-16 12:06:43,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:43,908 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:43,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:44,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-16 12:06:44,109 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:44,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:44,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1583630024, now seen corresponding path program 1 times [2022-11-16 12:06:44,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:44,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979570278] [2022-11-16 12:06:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:44,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:06:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:06:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:06:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:06:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:06:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:06:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:06:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:06:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 12:06:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:06:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:06:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:06:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:06:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:06:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 12:06:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:06:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 12:06:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 12:06:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 12:06:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-16 12:06:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-16 12:06:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-16 12:06:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-16 12:06:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-16 12:06:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-16 12:06:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-16 12:06:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:06:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 49 proven. 46 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-11-16 12:06:44,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:44,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979570278] [2022-11-16 12:06:44,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979570278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:44,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75368138] [2022-11-16 12:06:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:44,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:44,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:44,864 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:44,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-16 12:06:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:45,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:06:45,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-16 12:06:45,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:45,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75368138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:45,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:06:45,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-11-16 12:06:45,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351530684] [2022-11-16 12:06:45,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:45,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:06:45,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:45,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:06:45,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:06:45,786 INFO L87 Difference]: Start difference. First operand 2302 states and 2988 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-16 12:06:46,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:46,772 INFO L93 Difference]: Finished difference Result 2759 states and 3576 transitions. [2022-11-16 12:06:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:06:46,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 185 [2022-11-16 12:06:46,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:46,779 INFO L225 Difference]: With dead ends: 2759 [2022-11-16 12:06:46,779 INFO L226 Difference]: Without dead ends: 2249 [2022-11-16 12:06:46,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:06:46,783 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 218 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:46,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 747 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:06:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2022-11-16 12:06:47,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 2227. [2022-11-16 12:06:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1418 states have (on average 1.1241184767277856) internal successors, (1594), 1439 states have internal predecessors, (1594), 588 states have call successors, (588), 180 states have call predecessors, (588), 220 states have return successors, (692), 607 states have call predecessors, (692), 584 states have call successors, (692) [2022-11-16 12:06:47,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 2874 transitions. [2022-11-16 12:06:47,214 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 2874 transitions. Word has length 185 [2022-11-16 12:06:47,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:47,215 INFO L495 AbstractCegarLoop]: Abstraction has 2227 states and 2874 transitions. [2022-11-16 12:06:47,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-16 12:06:47,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 2874 transitions. [2022-11-16 12:06:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-16 12:06:47,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:47,218 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:47,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-16 12:06:47,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:47,419 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:47,419 INFO L85 PathProgramCache]: Analyzing trace with hash -942571126, now seen corresponding path program 2 times [2022-11-16 12:06:47,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:47,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457701928] [2022-11-16 12:06:47,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:47,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:06:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:06:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:06:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:06:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:06:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:06:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:06:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:06:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:06:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 12:06:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:06:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 12:06:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 12:06:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 12:06:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 12:06:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:51,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:06:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-16 12:06:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:06:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:06:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:06:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 12:06:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 12:06:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:06:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 12:06:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:06:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 12:06:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 51 proven. 41 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-16 12:06:52,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:52,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457701928] [2022-11-16 12:06:52,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457701928] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:52,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528739705] [2022-11-16 12:06:52,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:06:52,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:52,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:52,914 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:52,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-16 12:06:55,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:06:55,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:06:55,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 2921 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 12:06:55,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:55,245 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 [2022-11-16 12:06:55,250 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 [2022-11-16 12:06:55,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:06:55,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:06:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 152 proven. 8 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-16 12:06:56,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:56,641 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 30 treesize of output 24 [2022-11-16 12:06:56,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:06:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:06:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-16 12:06:56,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528739705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:06:56,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:06:56,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 12, 10] total 43 [2022-11-16 12:06:56,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856023751] [2022-11-16 12:06:56,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:56,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-16 12:06:56,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:56,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-16 12:06:56,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1689, Unknown=0, NotChecked=0, Total=1806 [2022-11-16 12:06:56,694 INFO L87 Difference]: Start difference. First operand 2227 states and 2874 transitions. Second operand has 43 states, 39 states have (on average 4.410256410256411) internal successors, (172), 39 states have internal predecessors, (172), 21 states have call successors, (75), 7 states have call predecessors, (75), 15 states have return successors, (74), 19 states have call predecessors, (74), 21 states have call successors, (74) [2022-11-16 12:07:07,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:07,098 INFO L93 Difference]: Finished difference Result 3134 states and 4226 transitions. [2022-11-16 12:07:07,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 12:07:07,099 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 39 states have (on average 4.410256410256411) internal successors, (172), 39 states have internal predecessors, (172), 21 states have call successors, (75), 7 states have call predecessors, (75), 15 states have return successors, (74), 19 states have call predecessors, (74), 21 states have call successors, (74) Word has length 188 [2022-11-16 12:07:07,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:07,107 INFO L225 Difference]: With dead ends: 3134 [2022-11-16 12:07:07,107 INFO L226 Difference]: Without dead ends: 2579 [2022-11-16 12:07:07,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 419 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=487, Invalid=4915, Unknown=0, NotChecked=0, Total=5402 [2022-11-16 12:07:07,112 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 412 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 7199 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 8226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 7199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 685 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:07,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1588 Invalid, 8226 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [342 Valid, 7199 Invalid, 0 Unknown, 685 Unchecked, 7.5s Time] [2022-11-16 12:07:07,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2022-11-16 12:07:07,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2225. [2022-11-16 12:07:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 1418 states have (on average 1.1241184767277856) internal successors, (1594), 1439 states have internal predecessors, (1594), 586 states have call successors, (586), 180 states have call predecessors, (586), 220 states have return successors, (687), 605 states have call predecessors, (687), 582 states have call successors, (687) [2022-11-16 12:07:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 2867 transitions. [2022-11-16 12:07:07,669 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 2867 transitions. Word has length 188 [2022-11-16 12:07:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:07,670 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 2867 transitions. [2022-11-16 12:07:07,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 39 states have (on average 4.410256410256411) internal successors, (172), 39 states have internal predecessors, (172), 21 states have call successors, (75), 7 states have call predecessors, (75), 15 states have return successors, (74), 19 states have call predecessors, (74), 21 states have call successors, (74) [2022-11-16 12:07:07,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 2867 transitions. [2022-11-16 12:07:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-16 12:07:07,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:07,674 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:07,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:07,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-16 12:07:07,875 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:07,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:07,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1250305764, now seen corresponding path program 1 times [2022-11-16 12:07:07,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:07,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107216955] [2022-11-16 12:07:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:07,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:07:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:07:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:07:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:07:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:07:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:07:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:07:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:07:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 12:07:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 12:07:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:07:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:07:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:13,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:07:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:13,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 12:07:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:13,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:07:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:07:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 12:07:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 12:07:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:07:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 12:07:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 12:07:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 12:07:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 12:07:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,145 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 19 proven. 54 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-16 12:07:14,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:14,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107216955] [2022-11-16 12:07:14,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107216955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:14,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89628620] [2022-11-16 12:07:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:14,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:14,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:14,147 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:14,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77526c50-6700-4bee-ae91-1b59d65f9755/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-16 12:07:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 2964 conjuncts, 130 conjunts are in the unsatisfiable core [2022-11-16 12:07:14,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:15,026 INFO L321 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2022-11-16 12:07:15,026 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 2 case distinctions, treesize of input 111 treesize of output 117 [2022-11-16 12:07:15,845 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:07:15,967 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:07:15,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:07:35,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:07:35,205 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:07:35,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2022-11-16 12:07:35,369 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:07:35,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 12:07:35,562 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 8 treesize of output 1 [2022-11-16 12:07:35,577 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4244 (Array Int Int))) (= (store |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_4244) |c_#memory_int|)) is different from true [2022-11-16 12:07:35,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:07:35,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:07:36,151 WARN L855 $PredicateComparison]: unable to prove that (exists ((aux_mod_v_ArrVal_4245_40 Int) (|save_byte_from_array_~storage#1.base| Int) (v_ArrVal_4248 Int) (aux_div_v_ArrVal_4245_40 Int)) (and (<= 0 aux_mod_v_ArrVal_4245_40) (< aux_mod_v_ArrVal_4245_40 (mod |c_save_byte_from_array_#in~size#1| 18446744073709551616)) (= (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| (store (store (select |c_old(#memory_int)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| (+ aux_mod_v_ArrVal_4245_40 (* aux_div_v_ArrVal_4245_40 18446744073709551616))) (+ |c_save_byte_from_array_#in~storage#1.offset| 8) v_ArrVal_4248)) |c_#memory_int|))) is different from true [2022-11-16 12:07:36,194 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-16 12:07:36,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 40