./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 7e3410638a547f2efce35a13c7d23c64ee660b1c493ec273ce9d4043edc218c3 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:05:49,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:05:49,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:05:49,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:05:49,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:05:49,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:05:49,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:05:49,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:05:49,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:05:49,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:05:49,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:05:49,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:05:49,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:05:49,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:05:49,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:05:49,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:05:49,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:05:49,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:05:49,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:05:49,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:05:49,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:05:49,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:05:49,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:05:49,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:05:49,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:05:49,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:05:49,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:05:49,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:05:49,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:05:49,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:05:49,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:05:49,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:05:49,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:05:49,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:05:49,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:05:49,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:05:49,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:05:49,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:05:49,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:05:49,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:05:49,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:05:49,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:05:49,938 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:05:49,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:05:49,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:05:49,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:05:49,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:05:49,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:05:49,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:05:49,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:05:49,940 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:05:49,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:05:49,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:05:49,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:05:49,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:05:49,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:05:49,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:05:49,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:05:49,942 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:05:49,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:05:49,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:05:49,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:05:49,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:05:49,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:05:49,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:05:49,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:05:49,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:05:49,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:05:49,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:05:49,944 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:05:49,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:05:49,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:05:49,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:05:49,944 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e3410638a547f2efce35a13c7d23c64ee660b1c493ec273ce9d4043edc218c3 [2021-12-14 17:05:50,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:05:50,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:05:50,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:05:50,124 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:05:50,125 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:05:50,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i [2021-12-14 17:05:50,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e1bbfe9d/716f9733e8a342c69bfa1662d4941ed1/FLAG29cc55daf [2021-12-14 17:05:50,761 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:05:50,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i [2021-12-14 17:05:50,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e1bbfe9d/716f9733e8a342c69bfa1662d4941ed1/FLAG29cc55daf [2021-12-14 17:05:50,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e1bbfe9d/716f9733e8a342c69bfa1662d4941ed1 [2021-12-14 17:05:50,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:05:50,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:05:50,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:05:50,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:05:50,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:05:50,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:05:50" (1/1) ... [2021-12-14 17:05:50,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@353528db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:50, skipping insertion in model container [2021-12-14 17:05:50,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:05:50" (1/1) ... [2021-12-14 17:05:50,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:05:51,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:05:51,251 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4492,4505] [2021-12-14 17:05:51,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4552,4565] [2021-12-14 17:05:51,768 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:51,768 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:51,769 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:51,769 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:51,770 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:51,786 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:51,790 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:51,794 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:51,794 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:51,796 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:51,798 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:51,800 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:51,800 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,021 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:52,022 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:52,022 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:52,023 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:52,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:52,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:52,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:52,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:52,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:52,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:52,137 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:52,377 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,378 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,400 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,402 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,407 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,408 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,423 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,424 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,426 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,426 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,426 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,426 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,427 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:52,498 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:05:52,514 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4492,4505] [2021-12-14 17:05:52,514 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4552,4565] [2021-12-14 17:05:52,537 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,537 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,544 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,544 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,545 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,545 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,546 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,546 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,546 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,546 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,564 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:52,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:52,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:52,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:52,566 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:52,566 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:52,566 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:52,567 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:52,567 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:52,567 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:52,585 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:52,666 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,666 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,670 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,670 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,672 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,673 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,680 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,681 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,681 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,682 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,682 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,682 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,683 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:52,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:52,893 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:05:52,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:52 WrapperNode [2021-12-14 17:05:52,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:05:52,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:05:52,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:05:52,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:05:52,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:52" (1/1) ... [2021-12-14 17:05:52,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:52" (1/1) ... [2021-12-14 17:05:53,057 INFO L137 Inliner]: procedures = 775, calls = 2489, calls flagged for inlining = 70, calls inlined = 25, statements flattened = 1393 [2021-12-14 17:05:53,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:05:53,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:05:53,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:05:53,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:05:53,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:52" (1/1) ... [2021-12-14 17:05:53,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:52" (1/1) ... [2021-12-14 17:05:53,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:52" (1/1) ... [2021-12-14 17:05:53,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:52" (1/1) ... [2021-12-14 17:05:53,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:52" (1/1) ... [2021-12-14 17:05:53,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:52" (1/1) ... [2021-12-14 17:05:53,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:52" (1/1) ... [2021-12-14 17:05:53,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:05:53,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:05:53,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:05:53,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:05:53,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:52" (1/1) ... [2021-12-14 17:05:53,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:05:53,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:53,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:05:53,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:05:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-14 17:05:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-14 17:05:53,233 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-14 17:05:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:05:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-14 17:05:53,233 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-14 17:05:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:05:53,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:05:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-14 17:05:53,233 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-14 17:05:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:05:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:05:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:05:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2021-12-14 17:05:53,234 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2021-12-14 17:05:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:05:53,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:05:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 17:05:53,234 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 17:05:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-14 17:05:53,235 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-14 17:05:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-12-14 17:05:53,235 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-12-14 17:05:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:05:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-14 17:05:53,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-14 17:05:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:05:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-14 17:05:53,236 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-14 17:05:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:05:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-12-14 17:05:53,236 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-12-14 17:05:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-14 17:05:53,236 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-14 17:05:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2021-12-14 17:05:53,236 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2021-12-14 17:05:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-12-14 17:05:53,237 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-12-14 17:05:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-14 17:05:53,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-14 17:05:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:05:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-14 17:05:53,237 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-14 17:05:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-12-14 17:05:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2021-12-14 17:05:53,238 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2021-12-14 17:05:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-14 17:05:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-14 17:05:53,238 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-14 17:05:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:05:53,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:05:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-14 17:05:53,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-14 17:05:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-12-14 17:05:53,239 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-12-14 17:05:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-12-14 17:05:53,239 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-12-14 17:05:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:05:53,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:05:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-14 17:05:53,239 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-14 17:05:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:05:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-14 17:05:53,240 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-14 17:05:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-14 17:05:53,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-14 17:05:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-14 17:05:53,240 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-14 17:05:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2021-12-14 17:05:53,240 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2021-12-14 17:05:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:05:53,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:05:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:05:53,583 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:05:53,584 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:05:53,758 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-12-14 17:05:53,784 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-14 17:05:54,135 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !true; [2021-12-14 17:05:54,135 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !true; [2021-12-14 17:05:54,600 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:05:54,613 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:05:54,613 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-14 17:05:54,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:05:54 BoogieIcfgContainer [2021-12-14 17:05:54,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:05:54,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:05:54,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:05:54,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:05:54,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:05:50" (1/3) ... [2021-12-14 17:05:54,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e6005a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:05:54, skipping insertion in model container [2021-12-14 17:05:54,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:52" (2/3) ... [2021-12-14 17:05:54,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e6005a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:05:54, skipping insertion in model container [2021-12-14 17:05:54,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:05:54" (3/3) ... [2021-12-14 17:05:54,622 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_put_harness.i [2021-12-14 17:05:54,626 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:05:54,626 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:05:54,670 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:05:54,690 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:05:54,690 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:05:54,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 361 states, 248 states have (on average 1.282258064516129) internal successors, (318), 245 states have internal predecessors, (318), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2021-12-14 17:05:54,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-14 17:05:54,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:54,724 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:54,724 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:54,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash 200610363, now seen corresponding path program 1 times [2021-12-14 17:05:54,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:54,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245689826] [2021-12-14 17:05:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:54,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:55,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:55,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245689826] [2021-12-14 17:05:55,275 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-14 17:05:55,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794657939] [2021-12-14 17:05:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:55,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:55,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:55,277 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:55,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:05:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 17:05:55,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-12-14 17:05:56,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:56,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794657939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:56,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:56,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 17:05:56,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346229943] [2021-12-14 17:05:56,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:56,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 17:05:56,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:56,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 17:05:56,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:05:56,123 INFO L87 Difference]: Start difference. First operand has 361 states, 248 states have (on average 1.282258064516129) internal successors, (318), 245 states have internal predecessors, (318), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-14 17:05:56,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:56,178 INFO L93 Difference]: Finished difference Result 716 states and 1017 transitions. [2021-12-14 17:05:56,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 17:05:56,182 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 136 [2021-12-14 17:05:56,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:56,193 INFO L225 Difference]: With dead ends: 716 [2021-12-14 17:05:56,193 INFO L226 Difference]: Without dead ends: 355 [2021-12-14 17:05:56,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:05:56,200 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:56,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:05:56,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-12-14 17:05:56,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2021-12-14 17:05:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 239 states have (on average 1.2677824267782427) internal successors, (303), 240 states have internal predecessors, (303), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2021-12-14 17:05:56,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 474 transitions. [2021-12-14 17:05:56,249 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 474 transitions. Word has length 136 [2021-12-14 17:05:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:56,250 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 474 transitions. [2021-12-14 17:05:56,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-14 17:05:56,251 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 474 transitions. [2021-12-14 17:05:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-14 17:05:56,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:56,257 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:56,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:56,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-14 17:05:56,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:56,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:56,468 INFO L85 PathProgramCache]: Analyzing trace with hash 810580097, now seen corresponding path program 1 times [2021-12-14 17:05:56,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:56,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150432954] [2021-12-14 17:05:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:56,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:56,539 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:05:56,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695243766] [2021-12-14 17:05:56,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:56,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:56,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:56,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:56,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:05:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:57,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:05:57,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:57,387 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-14 17:05:57,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:57,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:57,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150432954] [2021-12-14 17:05:57,388 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:05:57,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695243766] [2021-12-14 17:05:57,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695243766] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:57,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:57,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:05:57,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229720560] [2021-12-14 17:05:57,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:57,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:05:57,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:57,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:05:57,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:05:57,390 INFO L87 Difference]: Start difference. First operand 355 states and 474 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-14 17:05:57,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:57,766 INFO L93 Difference]: Finished difference Result 727 states and 982 transitions. [2021-12-14 17:05:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:05:57,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 136 [2021-12-14 17:05:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:57,781 INFO L225 Difference]: With dead ends: 727 [2021-12-14 17:05:57,781 INFO L226 Difference]: Without dead ends: 419 [2021-12-14 17:05:57,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:05:57,783 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 632 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:57,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 1757 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 17:05:57,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-12-14 17:05:57,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 357. [2021-12-14 17:05:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 241 states have (on average 1.2655601659751037) internal successors, (305), 242 states have internal predecessors, (305), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2021-12-14 17:05:57,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 476 transitions. [2021-12-14 17:05:57,830 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 476 transitions. Word has length 136 [2021-12-14 17:05:57,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:57,831 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 476 transitions. [2021-12-14 17:05:57,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-14 17:05:57,833 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 476 transitions. [2021-12-14 17:05:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-14 17:05:57,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:57,839 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:57,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:58,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-14 17:05:58,055 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:58,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:58,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1233281923, now seen corresponding path program 1 times [2021-12-14 17:05:58,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:58,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44829368] [2021-12-14 17:05:58,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:58,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:58,118 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:05:58,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089716739] [2021-12-14 17:05:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:58,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:58,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:58,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:58,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 17:05:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:58,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 2852 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 17:05:58,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-14 17:05:58,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:58,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:58,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44829368] [2021-12-14 17:05:58,825 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:05:58,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089716739] [2021-12-14 17:05:58,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089716739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:58,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:58,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:05:58,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126678706] [2021-12-14 17:05:58,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:58,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:05:58,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:58,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:05:58,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:05:58,826 INFO L87 Difference]: Start difference. First operand 357 states and 476 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-14 17:05:58,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:58,864 INFO L93 Difference]: Finished difference Result 710 states and 950 transitions. [2021-12-14 17:05:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:05:58,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 136 [2021-12-14 17:05:58,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:58,867 INFO L225 Difference]: With dead ends: 710 [2021-12-14 17:05:58,867 INFO L226 Difference]: Without dead ends: 362 [2021-12-14 17:05:58,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:05:58,869 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 2 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:58,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1880 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:05:58,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-12-14 17:05:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-12-14 17:05:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 245 states have (on average 1.2612244897959184) internal successors, (309), 246 states have internal predecessors, (309), 86 states have call successors, (86), 29 states have call predecessors, (86), 30 states have return successors, (89), 86 states have call predecessors, (89), 85 states have call successors, (89) [2021-12-14 17:05:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 484 transitions. [2021-12-14 17:05:58,882 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 484 transitions. Word has length 136 [2021-12-14 17:05:58,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:58,883 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 484 transitions. [2021-12-14 17:05:58,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-14 17:05:58,883 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 484 transitions. [2021-12-14 17:05:58,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-14 17:05:58,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:58,884 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:58,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:59,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:59,106 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:59,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:59,106 INFO L85 PathProgramCache]: Analyzing trace with hash 292227623, now seen corresponding path program 1 times [2021-12-14 17:05:59,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:59,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303220958] [2021-12-14 17:05:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:59,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:05:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:05:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:05:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:05:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:05:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:05:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:05:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:05:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 17:05:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:05:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-14 17:05:59,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:59,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303220958] [2021-12-14 17:05:59,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303220958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:59,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:59,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-14 17:05:59,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451081544] [2021-12-14 17:05:59,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:59,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 17:05:59,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:59,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 17:05:59,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:05:59,688 INFO L87 Difference]: Start difference. First operand 362 states and 484 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-14 17:06:03,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:03,418 INFO L93 Difference]: Finished difference Result 761 states and 1022 transitions. [2021-12-14 17:06:03,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 17:06:03,419 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 142 [2021-12-14 17:06:03,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:03,423 INFO L225 Difference]: With dead ends: 761 [2021-12-14 17:06:03,423 INFO L226 Difference]: Without dead ends: 420 [2021-12-14 17:06:03,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2021-12-14 17:06:03,426 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 319 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:03,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 2402 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-14 17:06:03,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-12-14 17:06:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 367. [2021-12-14 17:06:03,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 249 states have (on average 1.2610441767068272) internal successors, (314), 251 states have internal predecessors, (314), 86 states have call successors, (86), 29 states have call predecessors, (86), 31 states have return successors, (90), 86 states have call predecessors, (90), 85 states have call successors, (90) [2021-12-14 17:06:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 490 transitions. [2021-12-14 17:06:03,459 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 490 transitions. Word has length 142 [2021-12-14 17:06:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:03,460 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 490 transitions. [2021-12-14 17:06:03,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-14 17:06:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 490 transitions. [2021-12-14 17:06:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-14 17:06:03,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:03,462 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:03,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:06:03,462 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:03,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:03,463 INFO L85 PathProgramCache]: Analyzing trace with hash 319293225, now seen corresponding path program 1 times [2021-12-14 17:06:03,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:03,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922046426] [2021-12-14 17:06:03,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:03,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:06:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:06:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:06:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:06:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:06:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:06:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:06:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:06:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:06:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:06:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:06:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:06:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:06:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:06:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:06:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:06:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 17:06:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:06:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-14 17:06:03,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:03,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922046426] [2021-12-14 17:06:03,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922046426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:03,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:03,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:06:03,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116546348] [2021-12-14 17:06:03,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:03,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:06:03,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:03,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:06:03,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:06:03,858 INFO L87 Difference]: Start difference. First operand 367 states and 490 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-14 17:06:05,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:05,544 INFO L93 Difference]: Finished difference Result 768 states and 1030 transitions. [2021-12-14 17:06:05,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:06:05,545 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 142 [2021-12-14 17:06:05,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:05,548 INFO L225 Difference]: With dead ends: 768 [2021-12-14 17:06:05,548 INFO L226 Difference]: Without dead ends: 415 [2021-12-14 17:06:05,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:06:05,549 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 523 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:05,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 1478 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 17:06:05,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-14 17:06:05,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 365. [2021-12-14 17:06:05,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 247 states have (on average 1.2550607287449393) internal successors, (310), 249 states have internal predecessors, (310), 86 states have call successors, (86), 29 states have call predecessors, (86), 31 states have return successors, (90), 86 states have call predecessors, (90), 85 states have call successors, (90) [2021-12-14 17:06:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 486 transitions. [2021-12-14 17:06:05,575 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 486 transitions. Word has length 142 [2021-12-14 17:06:05,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:05,575 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 486 transitions. [2021-12-14 17:06:05,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-14 17:06:05,575 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 486 transitions. [2021-12-14 17:06:05,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-14 17:06:05,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:05,577 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:05,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:06:05,578 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:05,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:05,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1626460037, now seen corresponding path program 1 times [2021-12-14 17:06:05,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:05,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061785994] [2021-12-14 17:06:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:05,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:06:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:06:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:06:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:06:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:06:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:06:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:06:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:06:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:06:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:06:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:06:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:06:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:06:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:06:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 17:06:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:06:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:06:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 17:06:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:06:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,919 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-14 17:06:05,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:05,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061785994] [2021-12-14 17:06:05,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061785994] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:06:05,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906798700] [2021-12-14 17:06:05,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:05,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:06:05,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:06:05,921 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:06:05,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 17:06:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:06,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2880 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-14 17:06:06,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:07,550 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2021-12-14 17:06:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-14 17:06:13,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:06:13,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906798700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:13,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:06:13,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-14 17:06:13,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497033480] [2021-12-14 17:06:13,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:13,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:06:13,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:13,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:06:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=175, Unknown=3, NotChecked=26, Total=240 [2021-12-14 17:06:13,911 INFO L87 Difference]: Start difference. First operand 365 states and 486 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-14 17:06:14,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:14,419 INFO L93 Difference]: Finished difference Result 713 states and 950 transitions. [2021-12-14 17:06:14,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:06:14,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 148 [2021-12-14 17:06:14,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:14,426 INFO L225 Difference]: With dead ends: 713 [2021-12-14 17:06:14,426 INFO L226 Difference]: Without dead ends: 367 [2021-12-14 17:06:14,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=51, Invalid=222, Unknown=3, NotChecked=30, Total=306 [2021-12-14 17:06:14,427 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 5 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 676 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:14,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 2504 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 676 Unchecked, 0.4s Time] [2021-12-14 17:06:14,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-12-14 17:06:14,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2021-12-14 17:06:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 249 states have (on average 1.2530120481927711) internal successors, (312), 250 states have internal predecessors, (312), 86 states have call successors, (86), 30 states have call predecessors, (86), 31 states have return successors, (90), 86 states have call predecessors, (90), 85 states have call successors, (90) [2021-12-14 17:06:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 488 transitions. [2021-12-14 17:06:14,440 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 488 transitions. Word has length 148 [2021-12-14 17:06:14,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:14,441 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 488 transitions. [2021-12-14 17:06:14,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-14 17:06:14,442 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 488 transitions. [2021-12-14 17:06:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-14 17:06:14,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:14,443 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:14,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-14 17:06:14,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:06:14,664 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:14,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash -510156165, now seen corresponding path program 1 times [2021-12-14 17:06:14,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:14,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110495960] [2021-12-14 17:06:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:14,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:06:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:06:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:06:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:06:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:06:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:06:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:06:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:06:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:06:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:06:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:06:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:15,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:06:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:15,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:06:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:15,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:06:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:15,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:06:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:15,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:06:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:15,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:06:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:15,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:06:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:15,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 17:06:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-12-14 17:06:15,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:15,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110495960] [2021-12-14 17:06:15,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110495960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:15,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:15,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:06:15,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605089392] [2021-12-14 17:06:15,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:15,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:06:15,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:15,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:06:15,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:06:15,081 INFO L87 Difference]: Start difference. First operand 367 states and 488 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (26), 5 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-14 17:06:16,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:16,454 INFO L93 Difference]: Finished difference Result 733 states and 982 transitions. [2021-12-14 17:06:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:06:16,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (26), 5 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 153 [2021-12-14 17:06:16,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:16,457 INFO L225 Difference]: With dead ends: 733 [2021-12-14 17:06:16,457 INFO L226 Difference]: Without dead ends: 419 [2021-12-14 17:06:16,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:06:16,459 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 433 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:16,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 1858 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 17:06:16,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-12-14 17:06:16,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 369. [2021-12-14 17:06:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 250 states have (on average 1.252) internal successors, (313), 252 states have internal predecessors, (313), 86 states have call successors, (86), 30 states have call predecessors, (86), 32 states have return successors, (95), 86 states have call predecessors, (95), 85 states have call successors, (95) [2021-12-14 17:06:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 494 transitions. [2021-12-14 17:06:16,479 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 494 transitions. Word has length 153 [2021-12-14 17:06:16,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:16,480 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 494 transitions. [2021-12-14 17:06:16,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (26), 5 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-14 17:06:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 494 transitions. [2021-12-14 17:06:16,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-14 17:06:16,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:16,482 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:16,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:06:16,482 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:16,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:16,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1781778211, now seen corresponding path program 1 times [2021-12-14 17:06:16,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:16,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967650063] [2021-12-14 17:06:16,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:16,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:06:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:06:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:06:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:06:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:06:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:06:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:06:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:06:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:06:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:06:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:06:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:06:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:06:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:06:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:17,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:06:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:17,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:06:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:17,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:06:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:17,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:06:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:17,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:17,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 17:06:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-14 17:06:17,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:17,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967650063] [2021-12-14 17:06:17,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967650063] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:17,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:17,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:06:17,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618570631] [2021-12-14 17:06:17,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:17,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:06:17,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:17,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:06:17,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:06:17,049 INFO L87 Difference]: Start difference. First operand 369 states and 494 transitions. Second operand has 8 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2021-12-14 17:06:19,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:19,097 INFO L93 Difference]: Finished difference Result 427 states and 573 transitions. [2021-12-14 17:06:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:06:19,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 158 [2021-12-14 17:06:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:19,099 INFO L225 Difference]: With dead ends: 427 [2021-12-14 17:06:19,100 INFO L226 Difference]: Without dead ends: 425 [2021-12-14 17:06:19,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:06:19,100 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 217 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:19,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 1724 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 17:06:19,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-12-14 17:06:19,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 373. [2021-12-14 17:06:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 253 states have (on average 1.2490118577075098) internal successors, (316), 255 states have internal predecessors, (316), 86 states have call successors, (86), 31 states have call predecessors, (86), 33 states have return successors, (95), 86 states have call predecessors, (95), 85 states have call successors, (95) [2021-12-14 17:06:19,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 497 transitions. [2021-12-14 17:06:19,116 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 497 transitions. Word has length 158 [2021-12-14 17:06:19,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:19,116 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 497 transitions. [2021-12-14 17:06:19,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2021-12-14 17:06:19,116 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 497 transitions. [2021-12-14 17:06:19,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-14 17:06:19,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:19,144 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:19,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:06:19,144 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:19,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:19,145 INFO L85 PathProgramCache]: Analyzing trace with hash 655304915, now seen corresponding path program 1 times [2021-12-14 17:06:19,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:19,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358664448] [2021-12-14 17:06:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:19,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:06:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:06:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:06:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:06:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:06:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:06:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:06:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:06:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:06:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:06:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:06:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:06:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:06:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:06:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:06:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:06:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:06:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:06:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 17:06:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 17:06:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 17:06:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-14 17:06:19,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:19,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358664448] [2021-12-14 17:06:19,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358664448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:19,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:19,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:06:19,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14466599] [2021-12-14 17:06:19,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:19,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:06:19,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:19,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:06:19,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:06:19,828 INFO L87 Difference]: Start difference. First operand 373 states and 497 transitions. Second operand has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2021-12-14 17:06:21,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:21,516 INFO L93 Difference]: Finished difference Result 433 states and 579 transitions. [2021-12-14 17:06:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:06:21,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 171 [2021-12-14 17:06:21,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:21,521 INFO L225 Difference]: With dead ends: 433 [2021-12-14 17:06:21,521 INFO L226 Difference]: Without dead ends: 431 [2021-12-14 17:06:21,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:06:21,521 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 325 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:21,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 1665 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 17:06:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-12-14 17:06:21,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 378. [2021-12-14 17:06:21,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 256 states have (on average 1.24609375) internal successors, (319), 259 states have internal predecessors, (319), 87 states have call successors, (87), 32 states have call predecessors, (87), 34 states have return successors, (96), 86 states have call predecessors, (96), 86 states have call successors, (96) [2021-12-14 17:06:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 502 transitions. [2021-12-14 17:06:21,537 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 502 transitions. Word has length 171 [2021-12-14 17:06:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:21,539 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 502 transitions. [2021-12-14 17:06:21,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2021-12-14 17:06:21,539 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 502 transitions. [2021-12-14 17:06:21,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-14 17:06:21,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:21,541 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:21,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 17:06:21,542 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:21,542 INFO L85 PathProgramCache]: Analyzing trace with hash 657151957, now seen corresponding path program 1 times [2021-12-14 17:06:21,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:21,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680242209] [2021-12-14 17:06:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:21,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:21,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:06:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:21,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:06:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:21,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:06:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:21,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:06:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:21,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:06:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:21,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:06:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:21,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:06:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:06:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:06:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:06:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:06:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:06:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:06:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:06:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:06:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:06:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:06:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:06:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 17:06:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 17:06:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 17:06:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-14 17:06:22,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:22,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680242209] [2021-12-14 17:06:22,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680242209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:22,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:22,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:06:22,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900640675] [2021-12-14 17:06:22,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:22,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:06:22,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:22,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:06:22,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:06:22,107 INFO L87 Difference]: Start difference. First operand 378 states and 502 transitions. Second operand has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2021-12-14 17:06:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:23,422 INFO L93 Difference]: Finished difference Result 436 states and 581 transitions. [2021-12-14 17:06:23,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:06:23,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 171 [2021-12-14 17:06:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:23,425 INFO L225 Difference]: With dead ends: 436 [2021-12-14 17:06:23,425 INFO L226 Difference]: Without dead ends: 434 [2021-12-14 17:06:23,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:06:23,426 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 438 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:23,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 1638 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 17:06:23,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-12-14 17:06:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 377. [2021-12-14 17:06:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 256 states have (on average 1.24609375) internal successors, (319), 258 states have internal predecessors, (319), 86 states have call successors, (86), 32 states have call predecessors, (86), 34 states have return successors, (95), 86 states have call predecessors, (95), 85 states have call successors, (95) [2021-12-14 17:06:23,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 500 transitions. [2021-12-14 17:06:23,441 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 500 transitions. Word has length 171 [2021-12-14 17:06:23,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:23,442 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 500 transitions. [2021-12-14 17:06:23,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2021-12-14 17:06:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 500 transitions. [2021-12-14 17:06:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-14 17:06:23,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:23,445 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:23,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 17:06:23,445 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash 220397050, now seen corresponding path program 1 times [2021-12-14 17:06:23,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:23,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557220531] [2021-12-14 17:06:23,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:23,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:06:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:06:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:06:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:06:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:06:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:06:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:06:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:06:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:06:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:06:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:06:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:06:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:06:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:06:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:06:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:06:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:06:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 17:06:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:06:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-14 17:06:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-14 17:06:23,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:23,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557220531] [2021-12-14 17:06:23,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557220531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:23,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:23,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 17:06:23,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630955450] [2021-12-14 17:06:23,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:23,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 17:06:23,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 17:06:23,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:06:23,865 INFO L87 Difference]: Start difference. First operand 377 states and 500 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (27), 6 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-14 17:06:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:28,052 INFO L93 Difference]: Finished difference Result 815 states and 1116 transitions. [2021-12-14 17:06:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 17:06:28,053 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (27), 6 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 177 [2021-12-14 17:06:28,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:28,055 INFO L225 Difference]: With dead ends: 815 [2021-12-14 17:06:28,055 INFO L226 Difference]: Without dead ends: 515 [2021-12-14 17:06:28,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:06:28,057 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 999 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 2404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:28,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 2396 Invalid, 2404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-14 17:06:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-12-14 17:06:28,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 381. [2021-12-14 17:06:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 259 states have (on average 1.2432432432432432) internal successors, (322), 261 states have internal predecessors, (322), 87 states have call successors, (87), 32 states have call predecessors, (87), 34 states have return successors, (96), 87 states have call predecessors, (96), 86 states have call successors, (96) [2021-12-14 17:06:28,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 505 transitions. [2021-12-14 17:06:28,071 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 505 transitions. Word has length 177 [2021-12-14 17:06:28,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:28,071 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 505 transitions. [2021-12-14 17:06:28,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (27), 6 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-14 17:06:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 505 transitions. [2021-12-14 17:06:28,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-14 17:06:28,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:28,073 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:28,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 17:06:28,073 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:28,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:28,074 INFO L85 PathProgramCache]: Analyzing trace with hash -597251400, now seen corresponding path program 1 times [2021-12-14 17:06:28,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:28,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357128363] [2021-12-14 17:06:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:28,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:06:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:06:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:06:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:06:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:06:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:06:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:06:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:06:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:06:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:06:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:06:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:06:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:06:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:06:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:06:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:06:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:06:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 17:06:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:06:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-14 17:06:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-14 17:06:28,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:28,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357128363] [2021-12-14 17:06:28,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357128363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:28,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:28,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:06:28,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480388075] [2021-12-14 17:06:28,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:28,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:06:28,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:28,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:06:28,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:06:28,476 INFO L87 Difference]: Start difference. First operand 381 states and 505 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-12-14 17:06:31,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:31,409 INFO L93 Difference]: Finished difference Result 570 states and 782 transitions. [2021-12-14 17:06:31,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:06:31,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2021-12-14 17:06:31,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:31,411 INFO L225 Difference]: With dead ends: 570 [2021-12-14 17:06:31,411 INFO L226 Difference]: Without dead ends: 513 [2021-12-14 17:06:31,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:06:31,412 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 415 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:31,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 2206 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-14 17:06:31,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-12-14 17:06:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 385. [2021-12-14 17:06:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 262 states have (on average 1.2404580152671756) internal successors, (325), 264 states have internal predecessors, (325), 87 states have call successors, (87), 32 states have call predecessors, (87), 35 states have return successors, (97), 88 states have call predecessors, (97), 86 states have call successors, (97) [2021-12-14 17:06:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 509 transitions. [2021-12-14 17:06:31,429 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 509 transitions. Word has length 177 [2021-12-14 17:06:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:31,430 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 509 transitions. [2021-12-14 17:06:31,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-12-14 17:06:31,430 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 509 transitions. [2021-12-14 17:06:31,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-14 17:06:31,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:31,432 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:31,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 17:06:31,432 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:31,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1081589820, now seen corresponding path program 1 times [2021-12-14 17:06:31,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:31,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402945710] [2021-12-14 17:06:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:31,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:06:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:06:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:06:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:06:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:06:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:06:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:06:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:06:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:06:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:06:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:06:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:06:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:06:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:06:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:06:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:06:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:06:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 17:06:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:06:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-14 17:06:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-14 17:06:31,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:31,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402945710] [2021-12-14 17:06:31,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402945710] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:31,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:31,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:06:31,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410173484] [2021-12-14 17:06:31,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:31,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:06:31,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:31,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:06:31,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:06:31,819 INFO L87 Difference]: Start difference. First operand 385 states and 509 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-12-14 17:06:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:34,440 INFO L93 Difference]: Finished difference Result 691 states and 922 transitions. [2021-12-14 17:06:34,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:06:34,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 179 [2021-12-14 17:06:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:34,443 INFO L225 Difference]: With dead ends: 691 [2021-12-14 17:06:34,443 INFO L226 Difference]: Without dead ends: 462 [2021-12-14 17:06:34,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:06:34,445 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 472 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:34,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 1205 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-14 17:06:34,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-12-14 17:06:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 386. [2021-12-14 17:06:34,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 263 states have (on average 1.2395437262357414) internal successors, (326), 265 states have internal predecessors, (326), 87 states have call successors, (87), 32 states have call predecessors, (87), 35 states have return successors, (97), 88 states have call predecessors, (97), 86 states have call successors, (97) [2021-12-14 17:06:34,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 510 transitions. [2021-12-14 17:06:34,460 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 510 transitions. Word has length 179 [2021-12-14 17:06:34,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:34,460 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 510 transitions. [2021-12-14 17:06:34,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-12-14 17:06:34,461 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 510 transitions. [2021-12-14 17:06:34,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-14 17:06:34,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:34,462 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:34,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 17:06:34,463 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash -517004810, now seen corresponding path program 1 times [2021-12-14 17:06:34,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:34,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911390811] [2021-12-14 17:06:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:34,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:06:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:06:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:06:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:06:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:06:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:06:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:06:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:06:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:06:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:06:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:06:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:06:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:06:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:06:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:06:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:06:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:06:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 17:06:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:06:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:34,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 17:06:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:35,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-14 17:06:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-12-14 17:06:35,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:35,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911390811] [2021-12-14 17:06:35,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911390811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:35,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:35,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-14 17:06:35,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740969329] [2021-12-14 17:06:35,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:35,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 17:06:35,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:35,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 17:06:35,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:06:35,017 INFO L87 Difference]: Start difference. First operand 386 states and 510 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 8 states have internal predecessors, (84), 6 states have call successors, (32), 8 states have call predecessors, (32), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-14 17:06:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:37,135 INFO L93 Difference]: Finished difference Result 839 states and 1140 transitions. [2021-12-14 17:06:37,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 17:06:37,136 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 8 states have internal predecessors, (84), 6 states have call successors, (32), 8 states have call predecessors, (32), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 186 [2021-12-14 17:06:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:37,138 INFO L225 Difference]: With dead ends: 839 [2021-12-14 17:06:37,138 INFO L226 Difference]: Without dead ends: 546 [2021-12-14 17:06:37,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2021-12-14 17:06:37,140 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 531 mSDsluCounter, 3560 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 4043 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:37,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 4043 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 17:06:37,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-12-14 17:06:37,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 435. [2021-12-14 17:06:37,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 299 states have (on average 1.2508361204013378) internal successors, (374), 302 states have internal predecessors, (374), 95 states have call successors, (95), 35 states have call predecessors, (95), 40 states have return successors, (110), 97 states have call predecessors, (110), 94 states have call successors, (110) [2021-12-14 17:06:37,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 579 transitions. [2021-12-14 17:06:37,157 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 579 transitions. Word has length 186 [2021-12-14 17:06:37,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:37,157 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 579 transitions. [2021-12-14 17:06:37,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 8 states have internal predecessors, (84), 6 states have call successors, (32), 8 states have call predecessors, (32), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-14 17:06:37,158 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 579 transitions. [2021-12-14 17:06:37,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-14 17:06:37,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:37,159 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:37,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 17:06:37,159 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:37,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1223849872, now seen corresponding path program 1 times [2021-12-14 17:06:37,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:37,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831878183] [2021-12-14 17:06:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:37,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:06:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:06:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:06:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:06:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:06:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:06:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:06:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:06:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:06:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:06:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:06:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:06:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:06:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:06:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:06:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:06:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:06:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 17:06:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:06:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-14 17:06:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-14 17:06:37,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:37,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831878183] [2021-12-14 17:06:37,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831878183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:37,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:37,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 17:06:37,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050712897] [2021-12-14 17:06:37,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:37,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 17:06:37,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:37,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 17:06:37,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:06:37,695 INFO L87 Difference]: Start difference. First operand 435 states and 579 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-12-14 17:06:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:42,461 INFO L93 Difference]: Finished difference Result 636 states and 870 transitions. [2021-12-14 17:06:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 17:06:42,461 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 183 [2021-12-14 17:06:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:42,463 INFO L225 Difference]: With dead ends: 636 [2021-12-14 17:06:42,464 INFO L226 Difference]: Without dead ends: 579 [2021-12-14 17:06:42,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:06:42,465 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 314 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:42,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 3137 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1947 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-14 17:06:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-12-14 17:06:42,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 443. [2021-12-14 17:06:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 307 states have (on average 1.250814332247557) internal successors, (384), 310 states have internal predecessors, (384), 95 states have call successors, (95), 35 states have call predecessors, (95), 40 states have return successors, (110), 97 states have call predecessors, (110), 94 states have call successors, (110) [2021-12-14 17:06:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 589 transitions. [2021-12-14 17:06:42,482 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 589 transitions. Word has length 183 [2021-12-14 17:06:42,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:42,483 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 589 transitions. [2021-12-14 17:06:42,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-12-14 17:06:42,483 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 589 transitions. [2021-12-14 17:06:42,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-14 17:06:42,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:42,484 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:42,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 17:06:42,485 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:42,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:42,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1686982824, now seen corresponding path program 1 times [2021-12-14 17:06:42,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:42,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129998160] [2021-12-14 17:06:42,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:42,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:06:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:06:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:06:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:06:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:06:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:06:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:06:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:06:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:06:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:06:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:06:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:06:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:06:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:06:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:06:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:06:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:06:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 17:06:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:06:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-14 17:06:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-14 17:06:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:42,855 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-14 17:06:42,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:42,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129998160] [2021-12-14 17:06:42,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129998160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:42,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:42,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:06:42,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34276826] [2021-12-14 17:06:42,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:42,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:06:42,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:42,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:06:42,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:06:42,858 INFO L87 Difference]: Start difference. First operand 443 states and 589 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2021-12-14 17:06:46,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:46,060 INFO L93 Difference]: Finished difference Result 578 states and 774 transitions. [2021-12-14 17:06:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:06:46,060 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) Word has length 187 [2021-12-14 17:06:46,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:46,063 INFO L225 Difference]: With dead ends: 578 [2021-12-14 17:06:46,063 INFO L226 Difference]: Without dead ends: 523 [2021-12-14 17:06:46,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:06:46,064 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 589 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:46,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 1836 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-14 17:06:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-12-14 17:06:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 448. [2021-12-14 17:06:46,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 311 states have (on average 1.247588424437299) internal successors, (388), 314 states have internal predecessors, (388), 95 states have call successors, (95), 35 states have call predecessors, (95), 41 states have return successors, (112), 98 states have call predecessors, (112), 94 states have call successors, (112) [2021-12-14 17:06:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 595 transitions. [2021-12-14 17:06:46,101 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 595 transitions. Word has length 187 [2021-12-14 17:06:46,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:46,101 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 595 transitions. [2021-12-14 17:06:46,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2021-12-14 17:06:46,102 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 595 transitions. [2021-12-14 17:06:46,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 17:06:46,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:46,103 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:46,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 17:06:46,103 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:46,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:46,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1674366495, now seen corresponding path program 1 times [2021-12-14 17:06:46,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:46,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161614230] [2021-12-14 17:06:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:46,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:06:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:06:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:06:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:06:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:06:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:06:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:06:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:06:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:06:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:06:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:06:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:06:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:06:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:06:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:06:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:06:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:06:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 17:06:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:06:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:06:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:06:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 17:06:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-14 17:06:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 17:06:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-14 17:06:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-12-14 17:06:46,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:46,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161614230] [2021-12-14 17:06:46,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161614230] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:06:46,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885693257] [2021-12-14 17:06:46,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:46,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:06:46,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:06:46,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:06:46,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 17:06:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:47,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 3138 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-14 17:06:47,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:47,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-14 17:06:47,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-14 17:06:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-12-14 17:06:47,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:06:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-14 17:06:48,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885693257] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:06:48,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:06:48,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 13] total 19 [2021-12-14 17:06:48,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334929225] [2021-12-14 17:06:48,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:06:48,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 17:06:48,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:48,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 17:06:48,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:06:48,523 INFO L87 Difference]: Start difference. First operand 448 states and 595 transitions. Second operand has 19 states, 16 states have (on average 6.875) internal successors, (110), 14 states have internal predecessors, (110), 10 states have call successors, (43), 7 states have call predecessors, (43), 5 states have return successors, (35), 6 states have call predecessors, (35), 8 states have call successors, (35)