./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 ae007674 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-ae00767 [2021-12-28 03:21:13,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:21:13,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:21:13,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:21:13,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:21:13,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:21:13,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:21:13,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:21:13,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:21:13,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:21:13,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:21:13,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:21:13,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:21:13,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:21:13,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:21:13,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:21:13,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:21:13,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:21:13,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:21:13,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:21:13,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:21:13,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:21:13,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:21:13,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:21:13,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:21:13,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:21:13,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:21:13,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:21:13,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:21:13,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:21:13,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:21:13,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:21:13,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:21:13,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:21:13,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:21:13,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:21:13,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:21:13,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:21:13,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:21:13,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:21:13,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:21:13,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:21:14,010 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:21:14,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:21:14,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:21:14,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:21:14,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:21:14,014 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:21:14,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:21:14,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:21:14,015 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:21:14,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:21:14,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:21:14,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:21:14,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:21:14,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:21:14,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:21:14,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:21:14,017 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:21:14,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:21:14,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:21:14,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:21:14,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:21:14,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:21:14,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:21:14,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:21:14,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:21:14,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:21:14,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:21:14,026 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:21:14,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:21:14,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:21:14,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ef598a219073b4e1ea2c3302ab5b9fcd0bd41db1d8d7141c8967f07530c02d [2021-12-28 03:21:14,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:21:14,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:21:14,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:21:14,331 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:21:14,343 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:21:14,345 INFO L432 ainManager$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 [2021-12-28 03:21:14,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17fd7af18/942020e6ad514200a1b8ac887c988e49/FLAG1730e36cc [2021-12-28 03:21:14,929 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:21:14,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness.i [2021-12-28 03:21:14,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17fd7af18/942020e6ad514200a1b8ac887c988e49/FLAG1730e36cc [2021-12-28 03:21:15,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17fd7af18/942020e6ad514200a1b8ac887c988e49 [2021-12-28 03:21:15,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:21:15,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:21:15,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:21:15,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:21:15,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:21:15,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:21:15" (1/1) ... [2021-12-28 03:21:15,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4648c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:15, skipping insertion in model container [2021-12-28 03:21:15,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:21:15" (1/1) ... [2021-12-28 03:21:15,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:21:15,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:21:15,711 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] [2021-12-28 03:21:15,718 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] [2021-12-28 03:21:16,190 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:21:16,227 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,228 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,228 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,229 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,230 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,238 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,238 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,239 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,388 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:21:16,389 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:21:16,390 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:21:16,390 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:21:16,391 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:21:16,392 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:21:16,392 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:21:16,392 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:21:16,393 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:21:16,393 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:21:16,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,494 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:21:16,571 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:21:16,588 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] [2021-12-28 03:21:16,589 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] [2021-12-28 03:21:16,627 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:21:16,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,642 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,643 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,643 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,644 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,649 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,650 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,651 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,651 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,681 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:21:16,682 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:21:16,683 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:21:16,684 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:21:16,685 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:21:16,685 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:21:16,686 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:21:16,686 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:21:16,687 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:21:16,687 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:21:16,728 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,729 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:21:16,910 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:21:16,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:16 WrapperNode [2021-12-28 03:21:16,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:21:16,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:21:16,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:21:16,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:21:16,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:16" (1/1) ... [2021-12-28 03:21:16,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:16" (1/1) ... [2021-12-28 03:21:17,061 INFO L137 Inliner]: procedures = 689, calls = 1509, calls flagged for inlining = 54, calls inlined = 9, statements flattened = 653 [2021-12-28 03:21:17,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:21:17,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:21:17,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:21:17,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:21:17,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:16" (1/1) ... [2021-12-28 03:21:17,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:16" (1/1) ... [2021-12-28 03:21:17,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:16" (1/1) ... [2021-12-28 03:21:17,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:16" (1/1) ... [2021-12-28 03:21:17,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:16" (1/1) ... [2021-12-28 03:21:17,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:16" (1/1) ... [2021-12-28 03:21:17,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:16" (1/1) ... [2021-12-28 03:21:17,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:21:17,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:21:17,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:21:17,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:21:17,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:16" (1/1) ... [2021-12-28 03:21:17,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:21:17,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:17,167 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) [2021-12-28 03:21:17,200 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 [2021-12-28 03:21:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-28 03:21:17,213 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-28 03:21:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:21:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-28 03:21:17,214 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-28 03:21:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:21:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:21:17,215 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:21:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:21:17,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:21:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:21:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:21:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:21:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:21:17,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:21:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:21:17,217 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:21:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:21:17,217 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:21:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-28 03:21:17,217 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-28 03:21:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:21:17,218 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:21:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:21:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:21:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:21:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:21:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:21:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-28 03:21:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-28 03:21:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:21:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-12-28 03:21:17,220 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-12-28 03:21:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-12-28 03:21:17,220 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-12-28 03:21:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:21:17,436 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:21:17,438 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:21:18,002 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:21:18,009 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:21:18,009 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-28 03:21:18,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:21:18 BoogieIcfgContainer [2021-12-28 03:21:18,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:21:18,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:21:18,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:21:18,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:21:18,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:21:15" (1/3) ... [2021-12-28 03:21:18,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1347bde4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:21:18, skipping insertion in model container [2021-12-28 03:21:18,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:16" (2/3) ... [2021-12-28 03:21:18,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1347bde4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:21:18, skipping insertion in model container [2021-12-28 03:21:18,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:21:18" (3/3) ... [2021-12-28 03:21:18,016 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_static_harness.i [2021-12-28 03:21:18,025 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:21:18,025 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:21:18,063 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:21:18,069 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 [2021-12-28 03:21:18,069 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:21:18,094 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) [2021-12-28 03:21:18,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-28 03:21:18,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:18,106 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] [2021-12-28 03:21:18,106 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:18,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash 602311799, now seen corresponding path program 1 times [2021-12-28 03:21:18,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:18,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6047276] [2021-12-28 03:21:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:18,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:18,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:21:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:18,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:21:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:18,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:21:18,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:18,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6047276] [2021-12-28 03:21:18,585 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-28 03:21:18,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370962746] [2021-12-28 03:21:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:18,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:18,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:18,613 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) [2021-12-28 03:21:18,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:21:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:19,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 2260 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 03:21:19,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-12-28 03:21:19,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:19,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370962746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:19,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:19,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 03:21:19,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34503641] [2021-12-28 03:21:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:19,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 03:21:19,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:19,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 03:21:19,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:21:19,254 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) [2021-12-28 03:21:19,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:19,279 INFO L93 Difference]: Finished difference Result 291 states and 418 transitions. [2021-12-28 03:21:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 03:21:19,281 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 [2021-12-28 03:21:19,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:19,288 INFO L225 Difference]: With dead ends: 291 [2021-12-28 03:21:19,288 INFO L226 Difference]: Without dead ends: 141 [2021-12-28 03:21:19,291 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 [2021-12-28 03:21:19,294 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 [2021-12-28 03:21:19,294 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] [2021-12-28 03:21:19,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-28 03:21:19,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-12-28 03:21:19,325 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) [2021-12-28 03:21:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 183 transitions. [2021-12-28 03:21:19,328 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 183 transitions. Word has length 110 [2021-12-28 03:21:19,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:19,329 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 183 transitions. [2021-12-28 03:21:19,329 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) [2021-12-28 03:21:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 183 transitions. [2021-12-28 03:21:19,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-28 03:21:19,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:19,331 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] [2021-12-28 03:21:19,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:19,552 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 [2021-12-28 03:21:19,552 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:19,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1578415580, now seen corresponding path program 1 times [2021-12-28 03:21:19,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:19,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413499490] [2021-12-28 03:21:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:19,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:19,636 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:19,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16047788] [2021-12-28 03:21:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:19,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:19,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:19,656 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) [2021-12-28 03:21:19,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:21:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:19,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:21:20,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2021-12-28 03:21:20,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:20,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:20,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413499490] [2021-12-28 03:21:20,250 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:20,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16047788] [2021-12-28 03:21:20,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16047788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:20,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:20,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:21:20,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124233488] [2021-12-28 03:21:20,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:20,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:21:20,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:20,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:21:20,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:21:20,252 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) [2021-12-28 03:21:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:20,392 INFO L93 Difference]: Finished difference Result 237 states and 304 transitions. [2021-12-28 03:21:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:21:20,393 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 [2021-12-28 03:21:20,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:20,396 INFO L225 Difference]: With dead ends: 237 [2021-12-28 03:21:20,396 INFO L226 Difference]: Without dead ends: 143 [2021-12-28 03:21:20,397 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 [2021-12-28 03:21:20,398 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 [2021-12-28 03:21:20,398 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] [2021-12-28 03:21:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-28 03:21:20,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-12-28 03:21:20,410 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) [2021-12-28 03:21:20,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 186 transitions. [2021-12-28 03:21:20,411 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 186 transitions. Word has length 127 [2021-12-28 03:21:20,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:20,412 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 186 transitions. [2021-12-28 03:21:20,412 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) [2021-12-28 03:21:20,412 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 186 transitions. [2021-12-28 03:21:20,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-28 03:21:20,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:20,414 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] [2021-12-28 03:21:20,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:20,633 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 [2021-12-28 03:21:20,634 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:20,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:20,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1074934923, now seen corresponding path program 1 times [2021-12-28 03:21:20,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:20,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229640407] [2021-12-28 03:21:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:20,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:20,702 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:20,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267905138] [2021-12-28 03:21:20,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:20,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:20,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:20,704 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) [2021-12-28 03:21:20,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:21:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:21,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:21:21,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-28 03:21:21,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:21,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:21,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229640407] [2021-12-28 03:21:21,280 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:21,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267905138] [2021-12-28 03:21:21,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267905138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:21,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:21,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:21:21,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076988221] [2021-12-28 03:21:21,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:21,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:21:21,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:21,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:21:21,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:21:21,283 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) [2021-12-28 03:21:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:21,308 INFO L93 Difference]: Finished difference Result 244 states and 318 transitions. [2021-12-28 03:21:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:21:21,309 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 [2021-12-28 03:21:21,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:21,310 INFO L225 Difference]: With dead ends: 244 [2021-12-28 03:21:21,311 INFO L226 Difference]: Without dead ends: 148 [2021-12-28 03:21:21,311 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 [2021-12-28 03:21:21,312 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 [2021-12-28 03:21:21,312 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] [2021-12-28 03:21:21,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-28 03:21:21,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 145. [2021-12-28 03:21:21,335 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) [2021-12-28 03:21:21,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 188 transitions. [2021-12-28 03:21:21,337 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 188 transitions. Word has length 142 [2021-12-28 03:21:21,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:21,338 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 188 transitions. [2021-12-28 03:21:21,338 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) [2021-12-28 03:21:21,338 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 188 transitions. [2021-12-28 03:21:21,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-28 03:21:21,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:21,340 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] [2021-12-28 03:21:21,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-28 03:21:21,555 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 [2021-12-28 03:21:21,556 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:21,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1467961933, now seen corresponding path program 1 times [2021-12-28 03:21:21,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:21,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168647648] [2021-12-28 03:21:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:21,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:21,607 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:21,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101605373] [2021-12-28 03:21:21,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:21,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:21,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:21,624 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) [2021-12-28 03:21:21,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:21:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:22,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-28 03:21:22,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:22,309 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 [2021-12-28 03:21:24,391 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 [2021-12-28 03:21:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-28 03:21:33,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:33,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:33,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168647648] [2021-12-28 03:21:33,170 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:33,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101605373] [2021-12-28 03:21:33,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101605373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:33,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:33,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-28 03:21:33,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573512906] [2021-12-28 03:21:33,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:33,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-28 03:21:33,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:33,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-28 03:21:33,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=203, Unknown=3, NotChecked=28, Total=272 [2021-12-28 03:21:33,172 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) [2021-12-28 03:21:33,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:33,994 INFO L93 Difference]: Finished difference Result 365 states and 500 transitions. [2021-12-28 03:21:33,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 03:21:33,994 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 [2021-12-28 03:21:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:33,996 INFO L225 Difference]: With dead ends: 365 [2021-12-28 03:21:33,997 INFO L226 Difference]: Without dead ends: 267 [2021-12-28 03:21:33,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=65, Invalid=356, Unknown=3, NotChecked=38, Total=462 [2021-12-28 03:21:33,998 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 182 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 735 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:33,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 1491 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1091 Invalid, 0 Unknown, 735 Unchecked, 0.7s Time] [2021-12-28 03:21:34,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-28 03:21:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 153. [2021-12-28 03:21:34,031 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) [2021-12-28 03:21:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 200 transitions. [2021-12-28 03:21:34,033 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 200 transitions. Word has length 142 [2021-12-28 03:21:34,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:34,035 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 200 transitions. [2021-12-28 03:21:34,035 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) [2021-12-28 03:21:34,035 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 200 transitions. [2021-12-28 03:21:34,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-28 03:21:34,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:34,037 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] [2021-12-28 03:21:34,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:34,271 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 [2021-12-28 03:21:34,271 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:34,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:34,272 INFO L85 PathProgramCache]: Analyzing trace with hash -659588909, now seen corresponding path program 1 times [2021-12-28 03:21:34,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:34,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997411038] [2021-12-28 03:21:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:34,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:34,348 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:34,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106874095] [2021-12-28 03:21:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:34,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:34,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:34,350 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) [2021-12-28 03:21:34,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:21:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:34,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 2482 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-28 03:21:34,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:35,028 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 [2021-12-28 03:21:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-28 03:21:35,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:35,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:35,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997411038] [2021-12-28 03:21:35,177 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:35,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106874095] [2021-12-28 03:21:35,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106874095] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:35,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:35,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-28 03:21:35,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046994814] [2021-12-28 03:21:35,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:35,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 03:21:35,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:35,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 03:21:35,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:21:35,179 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) [2021-12-28 03:21:36,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:36,022 INFO L93 Difference]: Finished difference Result 322 states and 429 transitions. [2021-12-28 03:21:36,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:21:36,023 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 [2021-12-28 03:21:36,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:36,025 INFO L225 Difference]: With dead ends: 322 [2021-12-28 03:21:36,025 INFO L226 Difference]: Without dead ends: 216 [2021-12-28 03:21:36,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:21:36,026 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 148 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:36,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1039 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 03:21:36,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-28 03:21:36,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 146. [2021-12-28 03:21:36,036 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) [2021-12-28 03:21:36,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 189 transitions. [2021-12-28 03:21:36,037 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 189 transitions. Word has length 148 [2021-12-28 03:21:36,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:36,037 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 189 transitions. [2021-12-28 03:21:36,037 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) [2021-12-28 03:21:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 189 transitions. [2021-12-28 03:21:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-28 03:21:36,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:36,039 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] [2021-12-28 03:21:36,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-28 03:21:36,251 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 [2021-12-28 03:21:36,251 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:36,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:36,252 INFO L85 PathProgramCache]: Analyzing trace with hash 940161605, now seen corresponding path program 1 times [2021-12-28 03:21:36,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:36,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651309826] [2021-12-28 03:21:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:36,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:36,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:36,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850152712] [2021-12-28 03:21:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:36,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:36,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:36,299 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) [2021-12-28 03:21:36,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:21:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:36,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:21:36,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-28 03:21:36,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:36,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:36,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651309826] [2021-12-28 03:21:36,961 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:36,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850152712] [2021-12-28 03:21:36,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850152712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:36,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:36,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:21:36,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778486377] [2021-12-28 03:21:36,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:36,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:21:36,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:36,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:21:36,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:21:36,962 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) [2021-12-28 03:21:37,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:37,086 INFO L93 Difference]: Finished difference Result 250 states and 325 transitions. [2021-12-28 03:21:37,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:21:37,087 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 [2021-12-28 03:21:37,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:37,089 INFO L225 Difference]: With dead ends: 250 [2021-12-28 03:21:37,089 INFO L226 Difference]: Without dead ends: 151 [2021-12-28 03:21:37,090 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 [2021-12-28 03:21:37,091 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 [2021-12-28 03:21:37,091 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] [2021-12-28 03:21:37,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-28 03:21:37,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-12-28 03:21:37,131 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) [2021-12-28 03:21:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 190 transitions. [2021-12-28 03:21:37,134 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 190 transitions. Word has length 144 [2021-12-28 03:21:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:37,135 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 190 transitions. [2021-12-28 03:21:37,135 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) [2021-12-28 03:21:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 190 transitions. [2021-12-28 03:21:37,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-28 03:21:37,137 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:37,137 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] [2021-12-28 03:21:37,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:37,350 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 [2021-12-28 03:21:37,351 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:37,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:37,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1620219975, now seen corresponding path program 1 times [2021-12-28 03:21:37,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:37,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067401900] [2021-12-28 03:21:37,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:37,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:37,388 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:37,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462026018] [2021-12-28 03:21:37,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:37,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:37,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:37,389 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) [2021-12-28 03:21:37,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:21:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:37,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:21:37,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-28 03:21:37,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:37,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:37,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067401900] [2021-12-28 03:21:37,964 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:37,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462026018] [2021-12-28 03:21:37,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462026018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:37,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:37,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:21:37,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638786387] [2021-12-28 03:21:37,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:37,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:21:37,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:21:37,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:21:37,966 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) [2021-12-28 03:21:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:38,006 INFO L93 Difference]: Finished difference Result 266 states and 340 transitions. [2021-12-28 03:21:38,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:21:38,007 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 [2021-12-28 03:21:38,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:38,008 INFO L225 Difference]: With dead ends: 266 [2021-12-28 03:21:38,008 INFO L226 Difference]: Without dead ends: 147 [2021-12-28 03:21:38,008 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 [2021-12-28 03:21:38,009 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 [2021-12-28 03:21:38,009 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] [2021-12-28 03:21:38,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-12-28 03:21:38,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-12-28 03:21:38,029 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) [2021-12-28 03:21:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 189 transitions. [2021-12-28 03:21:38,030 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 189 transitions. Word has length 144 [2021-12-28 03:21:38,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:38,031 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 189 transitions. [2021-12-28 03:21:38,031 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) [2021-12-28 03:21:38,031 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 189 transitions. [2021-12-28 03:21:38,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-28 03:21:38,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:38,032 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] [2021-12-28 03:21:38,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-28 03:21:38,243 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 [2021-12-28 03:21:38,244 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:38,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:38,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1782655420, now seen corresponding path program 1 times [2021-12-28 03:21:38,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:38,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080668770] [2021-12-28 03:21:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:38,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:38,332 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:38,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993904449] [2021-12-28 03:21:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:38,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:38,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:38,334 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) [2021-12-28 03:21:38,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:21:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:38,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 2490 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 03:21:38,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-28 03:21:38,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:38,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:38,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080668770] [2021-12-28 03:21:38,983 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:38,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993904449] [2021-12-28 03:21:38,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993904449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:38,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:38,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:21:38,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257438807] [2021-12-28 03:21:38,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:38,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:21:38,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:38,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:21:38,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:21:38,985 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) [2021-12-28 03:21:38,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:38,999 INFO L93 Difference]: Finished difference Result 268 states and 342 transitions. [2021-12-28 03:21:39,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:21:39,000 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 [2021-12-28 03:21:39,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:39,001 INFO L225 Difference]: With dead ends: 268 [2021-12-28 03:21:39,002 INFO L226 Difference]: Without dead ends: 149 [2021-12-28 03:21:39,002 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 [2021-12-28 03:21:39,003 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 [2021-12-28 03:21:39,003 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] [2021-12-28 03:21:39,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-12-28 03:21:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2021-12-28 03:21:39,012 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) [2021-12-28 03:21:39,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 190 transitions. [2021-12-28 03:21:39,013 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 190 transitions. Word has length 145 [2021-12-28 03:21:39,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:39,013 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 190 transitions. [2021-12-28 03:21:39,013 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) [2021-12-28 03:21:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 190 transitions. [2021-12-28 03:21:39,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-28 03:21:39,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:39,016 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] [2021-12-28 03:21:39,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-28 03:21:39,238 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 [2021-12-28 03:21:39,238 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:39,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash -626640314, now seen corresponding path program 1 times [2021-12-28 03:21:39,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:39,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048821383] [2021-12-28 03:21:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:39,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:39,313 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:39,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208792740] [2021-12-28 03:21:39,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:39,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:39,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:39,314 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) [2021-12-28 03:21:39,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:21:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:39,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-28 03:21:39,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 198 proven. 1 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-28 03:21:40,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:21:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-28 03:21:40,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:40,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048821383] [2021-12-28 03:21:40,487 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:40,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208792740] [2021-12-28 03:21:40,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208792740] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:21:40,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:21:40,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-28 03:21:40,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34134228] [2021-12-28 03:21:40,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:21:40,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 03:21:40,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:40,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 03:21:40,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:21:40,489 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) [2021-12-28 03:21:40,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:40,583 INFO L93 Difference]: Finished difference Result 270 states and 344 transitions. [2021-12-28 03:21:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:21:40,591 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 [2021-12-28 03:21:40,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:40,592 INFO L225 Difference]: With dead ends: 270 [2021-12-28 03:21:40,592 INFO L226 Difference]: Without dead ends: 151 [2021-12-28 03:21:40,593 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 [2021-12-28 03:21:40,593 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 [2021-12-28 03:21:40,593 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] [2021-12-28 03:21:40,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-28 03:21:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-12-28 03:21:40,599 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) [2021-12-28 03:21:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 192 transitions. [2021-12-28 03:21:40,600 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 192 transitions. Word has length 147 [2021-12-28 03:21:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:40,600 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 192 transitions. [2021-12-28 03:21:40,600 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) [2021-12-28 03:21:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 192 transitions. [2021-12-28 03:21:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-28 03:21:40,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:40,602 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] [2021-12-28 03:21:40,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-28 03:21:40,819 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 [2021-12-28 03:21:40,820 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:40,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:40,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2092653112, now seen corresponding path program 2 times [2021-12-28 03:21:40,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:40,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571205209] [2021-12-28 03:21:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:40,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:40,856 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:40,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095765914] [2021-12-28 03:21:40,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:21:40,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:40,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:40,858 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) [2021-12-28 03:21:40,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:21:41,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:21:41,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:21:41,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2528 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-28 03:21:41,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 198 proven. 4 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-28 03:21:41,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:21:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-28 03:21:42,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:42,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571205209] [2021-12-28 03:21:42,201 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:42,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095765914] [2021-12-28 03:21:42,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095765914] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:21:42,201 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:21:42,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-28 03:21:42,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082190403] [2021-12-28 03:21:42,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:21:42,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 03:21:42,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:42,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 03:21:42,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:21:42,202 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) [2021-12-28 03:21:42,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:42,317 INFO L93 Difference]: Finished difference Result 272 states and 346 transitions. [2021-12-28 03:21:42,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:21:42,317 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 [2021-12-28 03:21:42,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:42,318 INFO L225 Difference]: With dead ends: 272 [2021-12-28 03:21:42,318 INFO L226 Difference]: Without dead ends: 153 [2021-12-28 03:21:42,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:21:42,319 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 [2021-12-28 03:21:42,319 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] [2021-12-28 03:21:42,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-28 03:21:42,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2021-12-28 03:21:42,324 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) [2021-12-28 03:21:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 194 transitions. [2021-12-28 03:21:42,325 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 194 transitions. Word has length 149 [2021-12-28 03:21:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:42,325 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 194 transitions. [2021-12-28 03:21:42,325 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) [2021-12-28 03:21:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 194 transitions. [2021-12-28 03:21:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-28 03:21:42,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:42,326 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] [2021-12-28 03:21:42,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:42,547 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 [2021-12-28 03:21:42,547 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:42,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2113288394, now seen corresponding path program 3 times [2021-12-28 03:21:42,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:42,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263965003] [2021-12-28 03:21:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:42,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:42,603 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:42,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607997531] [2021-12-28 03:21:42,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:21:42,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:42,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:42,624 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) [2021-12-28 03:21:42,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 03:21:46,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-12-28 03:21:46,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:21:46,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 2448 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-28 03:21:46,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 198 proven. 9 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-28 03:21:46,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:21:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-28 03:21:47,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:47,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263965003] [2021-12-28 03:21:47,422 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:47,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607997531] [2021-12-28 03:21:47,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607997531] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:21:47,422 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:21:47,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-12-28 03:21:47,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601239062] [2021-12-28 03:21:47,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:21:47,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-28 03:21:47,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:47,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-28 03:21:47,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:21:47,423 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) [2021-12-28 03:21:47,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:47,563 INFO L93 Difference]: Finished difference Result 274 states and 348 transitions. [2021-12-28 03:21:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:21:47,564 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 [2021-12-28 03:21:47,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:47,566 INFO L225 Difference]: With dead ends: 274 [2021-12-28 03:21:47,566 INFO L226 Difference]: Without dead ends: 155 [2021-12-28 03:21:47,567 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 [2021-12-28 03:21:47,567 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 [2021-12-28 03:21:47,567 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] [2021-12-28 03:21:47,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-28 03:21:47,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-12-28 03:21:47,601 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) [2021-12-28 03:21:47,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 196 transitions. [2021-12-28 03:21:47,602 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 196 transitions. Word has length 151 [2021-12-28 03:21:47,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:47,602 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 196 transitions. [2021-12-28 03:21:47,602 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) [2021-12-28 03:21:47,602 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 196 transitions. [2021-12-28 03:21:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-28 03:21:47,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:47,603 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] [2021-12-28 03:21:47,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:47,819 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 [2021-12-28 03:21:47,819 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:47,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:47,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1836117172, now seen corresponding path program 4 times [2021-12-28 03:21:47,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:47,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108655570] [2021-12-28 03:21:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:47,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:47,863 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:47,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283535912] [2021-12-28 03:21:47,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 03:21:47,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:47,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:47,883 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) [2021-12-28 03:21:47,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 03:21:48,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 03:21:48,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:21:48,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 2566 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-28 03:21:48,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 198 proven. 16 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-28 03:21:48,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:21:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-28 03:21:49,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:49,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108655570] [2021-12-28 03:21:49,364 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:49,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283535912] [2021-12-28 03:21:49,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283535912] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:21:49,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:21:49,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-28 03:21:49,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407683367] [2021-12-28 03:21:49,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:21:49,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-28 03:21:49,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:49,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-28 03:21:49,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:21:49,367 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) [2021-12-28 03:21:49,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:49,530 INFO L93 Difference]: Finished difference Result 276 states and 350 transitions. [2021-12-28 03:21:49,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 03:21:49,543 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 [2021-12-28 03:21:49,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:49,544 INFO L225 Difference]: With dead ends: 276 [2021-12-28 03:21:49,544 INFO L226 Difference]: Without dead ends: 157 [2021-12-28 03:21:49,545 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 [2021-12-28 03:21:49,545 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 [2021-12-28 03:21:49,545 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] [2021-12-28 03:21:49,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-28 03:21:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2021-12-28 03:21:49,550 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) [2021-12-28 03:21:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 198 transitions. [2021-12-28 03:21:49,554 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 198 transitions. Word has length 153 [2021-12-28 03:21:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:49,554 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 198 transitions. [2021-12-28 03:21:49,555 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) [2021-12-28 03:21:49,555 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 198 transitions. [2021-12-28 03:21:49,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-28 03:21:49,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:49,556 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] [2021-12-28 03:21:49,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:49,775 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 [2021-12-28 03:21:49,775 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:49,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:49,776 INFO L85 PathProgramCache]: Analyzing trace with hash -463776434, now seen corresponding path program 5 times [2021-12-28 03:21:49,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:49,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295074903] [2021-12-28 03:21:49,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:49,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:49,821 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:49,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573922975] [2021-12-28 03:21:49,821 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-28 03:21:49,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:49,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:49,836 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) [2021-12-28 03:21:49,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-28 03:21:50,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-28 03:21:50,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:21:50,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-28 03:21:50,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 198 proven. 25 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-28 03:21:51,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:21:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-12-28 03:21:52,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:52,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295074903] [2021-12-28 03:21:52,102 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:52,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573922975] [2021-12-28 03:21:52,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573922975] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:21:52,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:21:52,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-12-28 03:21:52,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052351867] [2021-12-28 03:21:52,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:21:52,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-28 03:21:52,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:52,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-28 03:21:52,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2021-12-28 03:21:52,105 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) [2021-12-28 03:21:54,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-28 03:21:54,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:54,847 INFO L93 Difference]: Finished difference Result 278 states and 352 transitions. [2021-12-28 03:21:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 03:21:54,847 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 [2021-12-28 03:21:54,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:54,848 INFO L225 Difference]: With dead ends: 278 [2021-12-28 03:21:54,849 INFO L226 Difference]: Without dead ends: 159 [2021-12-28 03:21:54,849 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 [2021-12-28 03:21:54,851 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 41 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:54,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 2598 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 221 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-12-28 03:21:54,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-28 03:21:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-12-28 03:21:54,858 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) [2021-12-28 03:21:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 200 transitions. [2021-12-28 03:21:54,860 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 200 transitions. Word has length 155 [2021-12-28 03:21:54,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:54,860 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 200 transitions. [2021-12-28 03:21:54,861 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) [2021-12-28 03:21:54,861 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 200 transitions. [2021-12-28 03:21:54,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 03:21:54,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:54,864 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] [2021-12-28 03:21:54,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:55,071 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 [2021-12-28 03:21:55,072 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:55,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:55,072 INFO L85 PathProgramCache]: Analyzing trace with hash -199287088, now seen corresponding path program 6 times [2021-12-28 03:21:55,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:55,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525234910] [2021-12-28 03:21:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:55,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:55,133 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:55,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479092879] [2021-12-28 03:21:55,133 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-28 03:21:55,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:55,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:55,135 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) [2021-12-28 03:21:55,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process