./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_priority_queue_init_static_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 23ef598a219073b4e1ea2c3302ab5b9fcd0bd41db1d8d7141c8967f07530c02d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:36:26,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:36:26,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:36:26,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:36:26,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:36:26,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:36:26,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:36:26,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:36:26,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:36:26,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:36:26,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:36:26,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:36:26,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:36:26,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:36:26,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:36:26,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:36:26,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:36:26,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:36:26,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:36:26,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:36:26,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:36:26,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:36:26,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:36:26,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:36:26,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:36:26,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:36:26,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:36:26,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:36:26,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:36:26,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:36:26,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:36:26,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:36:26,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:36:26,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:36:26,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:36:26,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:36:26,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:36:26,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:36:26,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:36:26,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:36:26,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:36:26,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:36:26,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:36:26,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:36:26,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:36:26,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:36:26,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:36:26,942 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:36:26,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:36:26,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:36:26,943 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:36:26,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:36:26,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:36:26,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:36:26,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:36:26,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:36:26,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:36:26,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:36:26,945 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:36:26,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:36:26,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:36:26,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:36:26,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:36:26,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:36:26,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:36:26,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:36:26,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:36:26,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:36:26,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:36:26,947 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:36:26,947 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:36:26,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:36:26,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:36:26,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ef598a219073b4e1ea2c3302ab5b9fcd0bd41db1d8d7141c8967f07530c02d [2021-12-21 15:36:27,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:36:27,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:36:27,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:36:27,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:36:27,142 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:36:27,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness.i [2021-12-21 15:36:27,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21b1be9af/77b1ef39f67d4a59b13e27fbdf5f0a84/FLAG466d31414 [2021-12-21 15:36:27,647 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:36:27,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness.i [2021-12-21 15:36:27,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21b1be9af/77b1ef39f67d4a59b13e27fbdf5f0a84/FLAG466d31414 [2021-12-21 15:36:27,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21b1be9af/77b1ef39f67d4a59b13e27fbdf5f0a84 [2021-12-21 15:36:27,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:36:27,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:36:27,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:36:27,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:36:27,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:36:27,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:36:27" (1/1) ... [2021-12-21 15:36:27,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a475f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:36:27, skipping insertion in model container [2021-12-21 15:36:27,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:36:27" (1/1) ... [2021-12-21 15:36:27,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:36:28,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:36:28,236 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_priority_queue_init_static_harness.i[4504,4517] [2021-12-21 15:36:28,242 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_priority_queue_init_static_harness.i[4564,4577] [2021-12-21 15:36:28,658 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:36:28,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:28,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:28,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:28,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:28,699 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:28,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:28,707 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:28,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:28,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:28,892 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:36:28,893 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:36:28,894 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:36:28,895 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:36:28,897 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:36:28,902 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:36:28,903 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:36:28,903 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:36:28,904 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:36:28,904 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:36:28,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:28,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:29,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:36:29,043 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:36:29,062 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_priority_queue_init_static_harness.i[4504,4517] [2021-12-21 15:36:29,064 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_priority_queue_init_static_harness.i[4564,4577] [2021-12-21 15:36:29,101 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:36:29,114 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:29,114 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:29,114 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:29,115 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:29,115 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:29,120 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:29,120 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:29,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:29,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:29,141 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:36:29,142 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:36:29,143 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:36:29,143 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:36:29,144 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:36:29,144 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:36:29,144 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:36:29,145 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:36:29,145 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:36:29,145 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:36:29,177 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:29,178 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:36:29,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:36:29,350 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:36:29,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:36:29 WrapperNode [2021-12-21 15:36:29,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:36:29,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:36:29,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:36:29,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:36:29,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:36:29" (1/1) ... [2021-12-21 15:36:29,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:36:29" (1/1) ... [2021-12-21 15:36:29,480 INFO L137 Inliner]: procedures = 689, calls = 1509, calls flagged for inlining = 54, calls inlined = 9, statements flattened = 653 [2021-12-21 15:36:29,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:36:29,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:36:29,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:36:29,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:36:29,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:36:29" (1/1) ... [2021-12-21 15:36:29,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:36:29" (1/1) ... [2021-12-21 15:36:29,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:36:29" (1/1) ... [2021-12-21 15:36:29,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:36:29" (1/1) ... [2021-12-21 15:36:29,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:36:29" (1/1) ... [2021-12-21 15:36:29,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:36:29" (1/1) ... [2021-12-21 15:36:29,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:36:29" (1/1) ... [2021-12-21 15:36:29,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:36:29,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:36:29,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:36:29,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:36:29,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:36:29" (1/1) ... [2021-12-21 15:36:29,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:36:29,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:36:29,601 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) [2021-12-21 15:36:29,643 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 [2021-12-21 15:36:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-21 15:36:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-21 15:36:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:36:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-21 15:36:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-21 15:36:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:36:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-21 15:36:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-21 15:36:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 15:36:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 15:36:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:36:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:36:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:36:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:36:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:36:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-21 15:36:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-21 15:36:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-21 15:36:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-21 15:36:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-21 15:36:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-21 15:36:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 15:36:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 15:36:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:36:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:36:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:36:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-21 15:36:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-21 15:36:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-21 15:36:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-21 15:36:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:36:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-12-21 15:36:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-12-21 15:36:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-12-21 15:36:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-12-21 15:36:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:36:29,927 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:36:29,928 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:36:30,469 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:36:30,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:36:30,476 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-21 15:36:30,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:36:30 BoogieIcfgContainer [2021-12-21 15:36:30,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:36:30,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:36:30,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:36:30,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:36:30,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:36:27" (1/3) ... [2021-12-21 15:36:30,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b85b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:36:30, skipping insertion in model container [2021-12-21 15:36:30,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:36:29" (2/3) ... [2021-12-21 15:36:30,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b85b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:36:30, skipping insertion in model container [2021-12-21 15:36:30,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:36:30" (3/3) ... [2021-12-21 15:36:30,485 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_static_harness.i [2021-12-21 15:36:30,488 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:36:30,489 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:36:30,539 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:36:30,543 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 [2021-12-21 15:36:30,544 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:36:30,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 95 states have internal predecessors, (118), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-21 15:36:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-21 15:36:30,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:36:30,567 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 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] [2021-12-21 15:36:30,567 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:36:30,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:36:30,571 INFO L85 PathProgramCache]: Analyzing trace with hash 602311799, now seen corresponding path program 1 times [2021-12-21 15:36:30,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:36:30,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229740514] [2021-12-21 15:36:30,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:30,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:36:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:36:30,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:36:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:36:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:36:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:36:31,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:36:31,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:36:31,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229740514] [2021-12-21 15:36:31,027 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-21 15:36:31,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823480998] [2021-12-21 15:36:31,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:31,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:31,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:36:31,030 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) [2021-12-21 15:36:31,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:36:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:36:31,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 2260 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 15:36:31,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:36:31,717 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-12-21 15:36:31,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:36:31,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823480998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:36:31,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:36:31,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:36:31,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273623968] [2021-12-21 15:36:31,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:36:31,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:36:31,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:36:31,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:36:31,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:36:31,759 INFO L87 Difference]: Start difference. First operand has 147 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 95 states have internal predecessors, (118), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 15:36:31,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:36:31,792 INFO L93 Difference]: Finished difference Result 291 states and 418 transitions. [2021-12-21 15:36:31,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:36:31,794 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 110 [2021-12-21 15:36:31,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:36:31,800 INFO L225 Difference]: With dead ends: 291 [2021-12-21 15:36:31,801 INFO L226 Difference]: Without dead ends: 141 [2021-12-21 15:36:31,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:36:31,806 INFO L933 BasicCegarLoop]: 190 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, 190 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 [2021-12-21 15:36:31,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:36:31,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-21 15:36:31,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-12-21 15:36:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 89 states have (on average 1.1910112359550562) internal successors, (106), 90 states have internal predecessors, (106), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-21 15:36:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 183 transitions. [2021-12-21 15:36:31,855 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 183 transitions. Word has length 110 [2021-12-21 15:36:31,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:36:31,855 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 183 transitions. [2021-12-21 15:36:31,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 15:36:31,856 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 183 transitions. [2021-12-21 15:36:31,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-21 15:36:31,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:36:31,860 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 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] [2021-12-21 15:36:31,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 15:36:32,068 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 [2021-12-21 15:36:32,068 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:36:32,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:36:32,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1578415580, now seen corresponding path program 1 times [2021-12-21 15:36:32,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:36:32,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784118337] [2021-12-21 15:36:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:32,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:36:32,140 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:36:32,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761044595] [2021-12-21 15:36:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:32,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:32,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:36:32,142 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) [2021-12-21 15:36:32,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:36:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:36:32,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 15:36:32,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:36:32,839 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2021-12-21 15:36:32,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:36:32,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:36:32,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784118337] [2021-12-21 15:36:32,841 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:36:32,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761044595] [2021-12-21 15:36:32,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761044595] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:36:32,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:36:32,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:36:32,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026813426] [2021-12-21 15:36:32,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:36:32,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:36:32,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:36:32,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:36:32,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:36:32,845 INFO L87 Difference]: Start difference. First operand 141 states and 183 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-21 15:36:33,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:36:33,019 INFO L93 Difference]: Finished difference Result 237 states and 304 transitions. [2021-12-21 15:36:33,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:36:33,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 127 [2021-12-21 15:36:33,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:36:33,025 INFO L225 Difference]: With dead ends: 237 [2021-12-21 15:36:33,025 INFO L226 Difference]: Without dead ends: 143 [2021-12-21 15:36:33,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:36:33,031 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 62 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:36:33,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 862 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:36:33,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-21 15:36:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-12-21 15:36:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 92 states have internal predecessors, (107), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-21 15:36:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 186 transitions. [2021-12-21 15:36:33,061 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 186 transitions. Word has length 127 [2021-12-21 15:36:33,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:36:33,062 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 186 transitions. [2021-12-21 15:36:33,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-21 15:36:33,063 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 186 transitions. [2021-12-21 15:36:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-21 15:36:33,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:36:33,066 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:36:33,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:36:33,275 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 [2021-12-21 15:36:33,276 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:36:33,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:36:33,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1074934923, now seen corresponding path program 1 times [2021-12-21 15:36:33,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:36:33,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314366403] [2021-12-21 15:36:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:33,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:36:33,336 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:36:33,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53985338] [2021-12-21 15:36:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:33,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:33,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:36:33,338 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) [2021-12-21 15:36:33,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:36:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:36:33,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:36:33,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:36:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-21 15:36:33,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:36:33,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:36:33,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314366403] [2021-12-21 15:36:33,882 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:36:33,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53985338] [2021-12-21 15:36:33,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53985338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:36:33,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:36:33,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:36:33,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828844858] [2021-12-21 15:36:33,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:36:33,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:36:33,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:36:33,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:36:33,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:36:33,888 INFO L87 Difference]: Start difference. First operand 143 states and 186 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-21 15:36:33,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:36:33,917 INFO L93 Difference]: Finished difference Result 244 states and 318 transitions. [2021-12-21 15:36:33,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:36:33,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2021-12-21 15:36:33,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:36:33,922 INFO L225 Difference]: With dead ends: 244 [2021-12-21 15:36:33,922 INFO L226 Difference]: Without dead ends: 148 [2021-12-21 15:36:33,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:36:33,928 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 10 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:36:33,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 536 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:36:33,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-21 15:36:33,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 145. [2021-12-21 15:36:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 92 states have (on average 1.184782608695652) internal successors, (109), 94 states have internal predecessors, (109), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-21 15:36:33,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 188 transitions. [2021-12-21 15:36:33,944 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 188 transitions. Word has length 142 [2021-12-21 15:36:33,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:36:33,945 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 188 transitions. [2021-12-21 15:36:33,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-21 15:36:33,945 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 188 transitions. [2021-12-21 15:36:33,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-21 15:36:33,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:36:33,949 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:36:33,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 15:36:34,163 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 [2021-12-21 15:36:34,163 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:36:34,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:36:34,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1467961933, now seen corresponding path program 1 times [2021-12-21 15:36:34,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:36:34,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871129978] [2021-12-21 15:36:34,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:34,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:36:34,226 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:36:34,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413144698] [2021-12-21 15:36:34,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:34,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:34,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:36:34,228 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) [2021-12-21 15:36:34,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 15:36:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:36:34,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-21 15:36:34,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:36:34,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:36:37,004 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_585 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_585)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-21 15:36:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-21 15:36:46,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:36:46,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:36:46,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871129978] [2021-12-21 15:36:46,397 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:36:46,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413144698] [2021-12-21 15:36:46,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413144698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:36:46,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:36:46,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-21 15:36:46,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88679790] [2021-12-21 15:36:46,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:36:46,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-21 15:36:46,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:36:46,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-21 15:36:46,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=203, Unknown=3, NotChecked=28, Total=272 [2021-12-21 15:36:46,400 INFO L87 Difference]: Start difference. First operand 145 states and 188 transitions. Second operand has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 8 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2021-12-21 15:36:47,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:36:47,336 INFO L93 Difference]: Finished difference Result 365 states and 500 transitions. [2021-12-21 15:36:47,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-21 15:36:47,336 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 8 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) Word has length 142 [2021-12-21 15:36:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:36:47,339 INFO L225 Difference]: With dead ends: 365 [2021-12-21 15:36:47,339 INFO L226 Difference]: Without dead ends: 267 [2021-12-21 15:36:47,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=65, Invalid=356, Unknown=3, NotChecked=38, Total=462 [2021-12-21 15:36:47,342 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 182 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 735 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 15:36:47,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 1580 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1002 Invalid, 0 Unknown, 735 Unchecked, 0.8s Time] [2021-12-21 15:36:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-21 15:36:47,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 153. [2021-12-21 15:36:47,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 99 states have (on average 1.1919191919191918) internal successors, (118), 101 states have internal predecessors, (118), 39 states have call successors, (39), 12 states have call predecessors, (39), 14 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2021-12-21 15:36:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 200 transitions. [2021-12-21 15:36:47,358 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 200 transitions. Word has length 142 [2021-12-21 15:36:47,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:36:47,360 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 200 transitions. [2021-12-21 15:36:47,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 8 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2021-12-21 15:36:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 200 transitions. [2021-12-21 15:36:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-21 15:36:47,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:36:47,362 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:36:47,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 15:36:47,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:47,572 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:36:47,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:36:47,572 INFO L85 PathProgramCache]: Analyzing trace with hash -659588909, now seen corresponding path program 1 times [2021-12-21 15:36:47,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:36:47,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74248375] [2021-12-21 15:36:47,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:47,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:36:47,641 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:36:47,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998966155] [2021-12-21 15:36:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:47,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:47,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:36:47,643 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) [2021-12-21 15:36:47,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 15:36:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:36:48,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 2482 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-21 15:36:48,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:36:48,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:36:48,536 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-21 15:36:48,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:36:48,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:36:48,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74248375] [2021-12-21 15:36:48,536 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:36:48,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998966155] [2021-12-21 15:36:48,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998966155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:36:48,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:36:48,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-21 15:36:48,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369227294] [2021-12-21 15:36:48,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:36:48,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 15:36:48,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:36:48,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 15:36:48,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:36:48,541 INFO L87 Difference]: Start difference. First operand 153 states and 200 transitions. Second operand has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 8 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-12-21 15:36:49,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:36:49,424 INFO L93 Difference]: Finished difference Result 322 states and 429 transitions. [2021-12-21 15:36:49,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:36:49,426 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 8 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) Word has length 148 [2021-12-21 15:36:49,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:36:49,428 INFO L225 Difference]: With dead ends: 322 [2021-12-21 15:36:49,428 INFO L226 Difference]: Without dead ends: 216 [2021-12-21 15:36:49,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:36:49,429 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 148 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 15:36:49,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1082 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 15:36:49,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-21 15:36:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 146. [2021-12-21 15:36:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 95 states have internal predecessors, (110), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-21 15:36:49,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 189 transitions. [2021-12-21 15:36:49,442 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 189 transitions. Word has length 148 [2021-12-21 15:36:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:36:49,443 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 189 transitions. [2021-12-21 15:36:49,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 8 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-12-21 15:36:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 189 transitions. [2021-12-21 15:36:49,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-21 15:36:49,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:36:49,445 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:36:49,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 15:36:49,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:49,672 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:36:49,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:36:49,672 INFO L85 PathProgramCache]: Analyzing trace with hash 940161605, now seen corresponding path program 1 times [2021-12-21 15:36:49,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:36:49,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139184156] [2021-12-21 15:36:49,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:49,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:36:49,740 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:36:49,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714881202] [2021-12-21 15:36:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:49,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:49,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:36:49,752 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:36:49,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 15:36:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:36:50,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 15:36:50,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:36:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-21 15:36:50,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:36:50,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:36:50,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139184156] [2021-12-21 15:36:50,400 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:36:50,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714881202] [2021-12-21 15:36:50,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714881202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:36:50,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:36:50,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:36:50,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197723525] [2021-12-21 15:36:50,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:36:50,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:36:50,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:36:50,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:36:50,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:36:50,405 INFO L87 Difference]: Start difference. First operand 146 states and 189 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-21 15:36:50,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:36:50,567 INFO L93 Difference]: Finished difference Result 250 states and 325 transitions. [2021-12-21 15:36:50,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:36:50,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2021-12-21 15:36:50,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:36:50,569 INFO L225 Difference]: With dead ends: 250 [2021-12-21 15:36:50,569 INFO L226 Difference]: Without dead ends: 151 [2021-12-21 15:36:50,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:36:50,570 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 7 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:36:50,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 673 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:36:50,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-21 15:36:50,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-12-21 15:36:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 94 states have (on average 1.1808510638297873) internal successors, (111), 96 states have internal predecessors, (111), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-21 15:36:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 190 transitions. [2021-12-21 15:36:50,578 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 190 transitions. Word has length 144 [2021-12-21 15:36:50,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:36:50,578 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 190 transitions. [2021-12-21 15:36:50,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-21 15:36:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 190 transitions. [2021-12-21 15:36:50,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-21 15:36:50,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:36:50,579 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:36:50,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 15:36:50,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:50,802 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:36:50,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:36:50,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1620219975, now seen corresponding path program 1 times [2021-12-21 15:36:50,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:36:50,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726647055] [2021-12-21 15:36:50,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:50,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:36:50,896 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:36:50,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739285489] [2021-12-21 15:36:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:50,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:50,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:36:50,902 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:36:50,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 15:36:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:36:51,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:36:51,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:36:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-21 15:36:51,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:36:51,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:36:51,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726647055] [2021-12-21 15:36:51,522 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:36:51,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739285489] [2021-12-21 15:36:51,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739285489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:36:51,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:36:51,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:36:51,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036455663] [2021-12-21 15:36:51,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:36:51,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:36:51,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:36:51,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:36:51,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:36:51,524 INFO L87 Difference]: Start difference. First operand 147 states and 190 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-21 15:36:51,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:36:51,590 INFO L93 Difference]: Finished difference Result 266 states and 340 transitions. [2021-12-21 15:36:51,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:36:51,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 144 [2021-12-21 15:36:51,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:36:51,592 INFO L225 Difference]: With dead ends: 266 [2021-12-21 15:36:51,592 INFO L226 Difference]: Without dead ends: 147 [2021-12-21 15:36:51,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:36:51,593 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 13 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:36:51,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 870 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:36:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-12-21 15:36:51,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-12-21 15:36:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 96 states have internal predecessors, (110), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-21 15:36:51,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 189 transitions. [2021-12-21 15:36:51,601 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 189 transitions. Word has length 144 [2021-12-21 15:36:51,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:36:51,601 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 189 transitions. [2021-12-21 15:36:51,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-21 15:36:51,602 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 189 transitions. [2021-12-21 15:36:51,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-21 15:36:51,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:36:51,603 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:36:51,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 15:36:51,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:51,831 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:36:51,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:36:51,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1782655420, now seen corresponding path program 1 times [2021-12-21 15:36:51,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:36:51,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571103348] [2021-12-21 15:36:51,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:51,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:36:51,901 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:36:51,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814932834] [2021-12-21 15:36:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:51,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:51,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:36:51,903 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:36:51,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 15:36:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:36:52,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 2490 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 15:36:52,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:36:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-21 15:36:52,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:36:52,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:36:52,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571103348] [2021-12-21 15:36:52,544 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:36:52,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814932834] [2021-12-21 15:36:52,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814932834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:36:52,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:36:52,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 15:36:52,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425813150] [2021-12-21 15:36:52,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:36:52,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 15:36:52,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:36:52,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 15:36:52,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:36:52,546 INFO L87 Difference]: Start difference. First operand 147 states and 189 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-21 15:36:52,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:36:52,561 INFO L93 Difference]: Finished difference Result 268 states and 342 transitions. [2021-12-21 15:36:52,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 15:36:52,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 145 [2021-12-21 15:36:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:36:52,563 INFO L225 Difference]: With dead ends: 268 [2021-12-21 15:36:52,563 INFO L226 Difference]: Without dead ends: 149 [2021-12-21 15:36:52,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:36:52,564 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 1 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:36:52,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 357 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:36:52,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-12-21 15:36:52,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2021-12-21 15:36:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 95 states have (on average 1.168421052631579) internal successors, (111), 97 states have internal predecessors, (111), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-21 15:36:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 190 transitions. [2021-12-21 15:36:52,571 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 190 transitions. Word has length 145 [2021-12-21 15:36:52,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:36:52,572 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 190 transitions. [2021-12-21 15:36:52,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-21 15:36:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 190 transitions. [2021-12-21 15:36:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-21 15:36:52,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:36:52,573 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:36:52,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-21 15:36:52,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-21 15:36:52,789 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:36:52,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:36:52,790 INFO L85 PathProgramCache]: Analyzing trace with hash -626640314, now seen corresponding path program 1 times [2021-12-21 15:36:52,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:36:52,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215529060] [2021-12-21 15:36:52,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:52,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:36:52,835 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:36:52,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728143173] [2021-12-21 15:36:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:52,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:52,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:36:52,837 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:36:52,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 15:36:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:36:53,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-21 15:36:53,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:36:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 198 proven. 1 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-21 15:36:53,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:36:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-21 15:36:53,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:36:53,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215529060] [2021-12-21 15:36:53,952 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:36:53,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728143173] [2021-12-21 15:36:53,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728143173] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:36:53,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:36:53,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-21 15:36:53,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131191763] [2021-12-21 15:36:53,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:36:53,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 15:36:53,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:36:53,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 15:36:53,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:36:53,954 INFO L87 Difference]: Start difference. First operand 148 states and 190 transitions. Second operand has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-21 15:36:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:36:54,050 INFO L93 Difference]: Finished difference Result 270 states and 344 transitions. [2021-12-21 15:36:54,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:36:54,051 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 147 [2021-12-21 15:36:54,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:36:54,052 INFO L225 Difference]: With dead ends: 270 [2021-12-21 15:36:54,052 INFO L226 Difference]: Without dead ends: 151 [2021-12-21 15:36:54,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:36:54,053 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 27 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:36:54,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 1215 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:36:54,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-21 15:36:54,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-12-21 15:36:54,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 97 states have (on average 1.1649484536082475) internal successors, (113), 99 states have internal predecessors, (113), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-21 15:36:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 192 transitions. [2021-12-21 15:36:54,060 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 192 transitions. Word has length 147 [2021-12-21 15:36:54,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:36:54,060 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 192 transitions. [2021-12-21 15:36:54,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-21 15:36:54,061 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 192 transitions. [2021-12-21 15:36:54,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-21 15:36:54,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:36:54,062 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:36:54,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 15:36:54,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:54,283 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:36:54,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:36:54,283 INFO L85 PathProgramCache]: Analyzing trace with hash -2092653112, now seen corresponding path program 2 times [2021-12-21 15:36:54,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:36:54,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554279495] [2021-12-21 15:36:54,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:54,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:36:54,323 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:36:54,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075793419] [2021-12-21 15:36:54,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:36:54,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:54,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:36:54,325 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:36:54,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 15:36:54,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:36:54,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:36:54,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 2528 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-21 15:36:54,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:36:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 198 proven. 4 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-21 15:36:55,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:36:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-21 15:36:55,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:36:55,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554279495] [2021-12-21 15:36:55,672 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:36:55,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075793419] [2021-12-21 15:36:55,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075793419] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:36:55,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:36:55,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-21 15:36:55,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115691615] [2021-12-21 15:36:55,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:36:55,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 15:36:55,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:36:55,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 15:36:55,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:36:55,676 INFO L87 Difference]: Start difference. First operand 150 states and 192 transitions. Second operand has 15 states, 13 states have (on average 6.0) internal successors, (78), 15 states have internal predecessors, (78), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-21 15:36:55,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:36:55,816 INFO L93 Difference]: Finished difference Result 272 states and 346 transitions. [2021-12-21 15:36:55,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:36:55,817 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.0) internal successors, (78), 15 states have internal predecessors, (78), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 149 [2021-12-21 15:36:55,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:36:55,818 INFO L225 Difference]: With dead ends: 272 [2021-12-21 15:36:55,818 INFO L226 Difference]: Without dead ends: 153 [2021-12-21 15:36:55,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:36:55,819 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 44 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:36:55,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 1561 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:36:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-21 15:36:55,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2021-12-21 15:36:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 99 states have (on average 1.1616161616161615) internal successors, (115), 101 states have internal predecessors, (115), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-21 15:36:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 194 transitions. [2021-12-21 15:36:55,829 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 194 transitions. Word has length 149 [2021-12-21 15:36:55,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:36:55,830 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 194 transitions. [2021-12-21 15:36:55,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.0) internal successors, (78), 15 states have internal predecessors, (78), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-21 15:36:55,830 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 194 transitions. [2021-12-21 15:36:55,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-21 15:36:55,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:36:55,832 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:36:55,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 15:36:56,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 15:36:56,039 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:36:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:36:56,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2113288394, now seen corresponding path program 3 times [2021-12-21 15:36:56,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:36:56,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593754257] [2021-12-21 15:36:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:36:56,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:36:56,082 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:36:56,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472012444] [2021-12-21 15:36:56,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 15:36:56,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:36:56,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:36:56,084 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:36:56,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 15:37:00,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-12-21 15:37:00,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:37:00,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 2448 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-21 15:37:00,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:00,615 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 198 proven. 9 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-21 15:37:00,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:37:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-21 15:37:01,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:01,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593754257] [2021-12-21 15:37:01,200 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:01,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472012444] [2021-12-21 15:37:01,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472012444] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:37:01,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:37:01,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-12-21 15:37:01,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016608212] [2021-12-21 15:37:01,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:37:01,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-21 15:37:01,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:01,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-21 15:37:01,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-21 15:37:01,202 INFO L87 Difference]: Start difference. First operand 152 states and 194 transitions. Second operand has 17 states, 15 states have (on average 5.466666666666667) internal successors, (82), 17 states have internal predecessors, (82), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-21 15:37:01,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:01,379 INFO L93 Difference]: Finished difference Result 274 states and 348 transitions. [2021-12-21 15:37:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:37:01,382 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.466666666666667) internal successors, (82), 17 states have internal predecessors, (82), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 151 [2021-12-21 15:37:01,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:01,383 INFO L225 Difference]: With dead ends: 274 [2021-12-21 15:37:01,383 INFO L226 Difference]: Without dead ends: 155 [2021-12-21 15:37:01,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:37:01,385 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 33 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:01,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1907 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:37:01,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-21 15:37:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-12-21 15:37:01,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 103 states have internal predecessors, (117), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-21 15:37:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 196 transitions. [2021-12-21 15:37:01,393 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 196 transitions. Word has length 151 [2021-12-21 15:37:01,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:01,394 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 196 transitions. [2021-12-21 15:37:01,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.466666666666667) internal successors, (82), 17 states have internal predecessors, (82), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-21 15:37:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 196 transitions. [2021-12-21 15:37:01,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-21 15:37:01,396 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:01,396 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:01,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:01,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-21 15:37:01,607 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:01,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1836117172, now seen corresponding path program 4 times [2021-12-21 15:37:01,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:01,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500409790] [2021-12-21 15:37:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:01,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:01,651 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:01,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296411579] [2021-12-21 15:37:01,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 15:37:01,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:01,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:01,653 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:37:01,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 15:37:02,217 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 15:37:02,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:37:02,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 2566 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-21 15:37:02,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:02,520 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 198 proven. 16 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-21 15:37:02,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:37:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-21 15:37:03,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:03,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500409790] [2021-12-21 15:37:03,059 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:03,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296411579] [2021-12-21 15:37:03,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296411579] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:37:03,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:37:03,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-21 15:37:03,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652503999] [2021-12-21 15:37:03,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:37:03,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-21 15:37:03,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:03,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-21 15:37:03,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-12-21 15:37:03,061 INFO L87 Difference]: Start difference. First operand 154 states and 196 transitions. Second operand has 19 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-21 15:37:03,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:03,311 INFO L93 Difference]: Finished difference Result 276 states and 350 transitions. [2021-12-21 15:37:03,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:37:03,312 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 153 [2021-12-21 15:37:03,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:03,315 INFO L225 Difference]: With dead ends: 276 [2021-12-21 15:37:03,315 INFO L226 Difference]: Without dead ends: 157 [2021-12-21 15:37:03,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-12-21 15:37:03,316 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 33 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:03,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2256 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:37:03,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-21 15:37:03,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2021-12-21 15:37:03,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 105 states have internal predecessors, (119), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-21 15:37:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 198 transitions. [2021-12-21 15:37:03,330 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 198 transitions. Word has length 153 [2021-12-21 15:37:03,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:03,330 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 198 transitions. [2021-12-21 15:37:03,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-21 15:37:03,330 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 198 transitions. [2021-12-21 15:37:03,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 15:37:03,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:03,333 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:03,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:03,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-21 15:37:03,536 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:03,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:03,536 INFO L85 PathProgramCache]: Analyzing trace with hash -463776434, now seen corresponding path program 5 times [2021-12-21 15:37:03,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:03,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273111813] [2021-12-21 15:37:03,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:03,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:03,574 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:03,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261211065] [2021-12-21 15:37:03,575 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-21 15:37:03,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:03,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:03,576 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:37:03,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 15:37:04,496 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-21 15:37:04,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:37:04,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-21 15:37:04,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 198 proven. 25 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-21 15:37:04,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:37:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-21 15:37:05,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:05,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273111813] [2021-12-21 15:37:05,884 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:05,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261211065] [2021-12-21 15:37:05,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261211065] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:37:05,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:37:05,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-12-21 15:37:05,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231402319] [2021-12-21 15:37:05,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:37:05,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-21 15:37:05,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:05,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-21 15:37:05,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2021-12-21 15:37:05,887 INFO L87 Difference]: Start difference. First operand 156 states and 198 transitions. Second operand has 25 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 25 states have internal predecessors, (90), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-21 15:37:06,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:06,501 INFO L93 Difference]: Finished difference Result 278 states and 352 transitions. [2021-12-21 15:37:06,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 15:37:06,516 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 25 states have internal predecessors, (90), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 155 [2021-12-21 15:37:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:06,519 INFO L225 Difference]: With dead ends: 278 [2021-12-21 15:37:06,519 INFO L226 Difference]: Without dead ends: 159 [2021-12-21 15:37:06,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2021-12-21 15:37:06,521 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 41 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:06,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 2598 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:37:06,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-21 15:37:06,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-12-21 15:37:06,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 105 states have (on average 1.1523809523809523) internal successors, (121), 107 states have internal predecessors, (121), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-21 15:37:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 200 transitions. [2021-12-21 15:37:06,532 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 200 transitions. Word has length 155 [2021-12-21 15:37:06,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:06,533 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 200 transitions. [2021-12-21 15:37:06,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 25 states have internal predecessors, (90), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-21 15:37:06,533 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 200 transitions. [2021-12-21 15:37:06,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-21 15:37:06,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:06,534 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:06,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:06,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-21 15:37:06,750 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:06,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:06,750 INFO L85 PathProgramCache]: Analyzing trace with hash -199287088, now seen corresponding path program 6 times [2021-12-21 15:37:06,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:06,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246753414] [2021-12-21 15:37:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:06,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:06,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:06,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639577743] [2021-12-21 15:37:06,805 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-21 15:37:06,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:06,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:06,820 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:37:06,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process