./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_dynamic_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 fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:47:46,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:47:46,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:47:46,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:47:46,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:47:46,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:47:46,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:47:46,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:47:46,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:47:46,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:47:46,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:47:46,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:47:46,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:47:46,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:47:46,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:47:46,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:47:46,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:47:46,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:47:46,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:47:46,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:47:46,959 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:47:46,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:47:46,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:47:46,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:47:46,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:47:46,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:47:46,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:47:46,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:47:46,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:47:46,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:47:46,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:47:46,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:47:46,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:47:46,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:47:46,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:47:46,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:47:46,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:47:46,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:47:46,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:47:46,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:47:46,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:47:46,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:47:46,989 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:47:47,014 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:47:47,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:47:47,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:47:47,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:47:47,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:47:47,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:47:47,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:47:47,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:47:47,017 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:47:47,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:47:47,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:47:47,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:47:47,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:47:47,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:47:47,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:47:47,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:47:47,019 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:47:47,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:47:47,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:47:47,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:47:47,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:47:47,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:47:47,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:47:47,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:47:47,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:47:47,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:47:47,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:47:47,021 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:47:47,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:47:47,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:47:47,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a [2022-07-21 09:47:47,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:47:47,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:47:47,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:47:47,310 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:47:47,311 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:47:47,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2022-07-21 09:47:47,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0937b4029/d5d70480e18945c18bb1f1e857fbea96/FLAG733bc0e98 [2022-07-21 09:47:48,087 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:47:48,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2022-07-21 09:47:48,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0937b4029/d5d70480e18945c18bb1f1e857fbea96/FLAG733bc0e98 [2022-07-21 09:47:48,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0937b4029/d5d70480e18945c18bb1f1e857fbea96 [2022-07-21 09:47:48,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:47:48,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:47:48,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:47:48,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:47:48,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:47:48,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:47:48" (1/1) ... [2022-07-21 09:47:48,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3abe4f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:48, skipping insertion in model container [2022-07-21 09:47:48,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:47:48" (1/1) ... [2022-07-21 09:47:48,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:47:48,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:47:48,590 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_dynamic_harness.i[4505,4518] [2022-07-21 09:47:48,595 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_dynamic_harness.i[4565,4578] [2022-07-21 09:47:49,160 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:47:49,224 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,225 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,225 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,226 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,228 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,243 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,246 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,247 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,247 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,450 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:47:49,451 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:47:49,451 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:47:49,452 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:47:49,453 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:47:49,454 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:47:49,454 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:47:49,455 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:47:49,455 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:47:49,456 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:47:49,540 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,541 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:47:49,633 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:47:49,659 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_dynamic_harness.i[4505,4518] [2022-07-21 09:47:49,660 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_dynamic_harness.i[4565,4578] [2022-07-21 09:47:49,688 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:47:49,699 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,701 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,706 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,707 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,708 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,708 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,743 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:47:49,744 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:47:49,745 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:47:49,746 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:47:49,747 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:47:49,747 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:47:49,748 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:47:49,748 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:47:49,748 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:47:49,749 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:47:49,774 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,775 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:49,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:47:50,117 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:47:50,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:50 WrapperNode [2022-07-21 09:47:50,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:47:50,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:47:50,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:47:50,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:47:50,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:50" (1/1) ... [2022-07-21 09:47:50,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:50" (1/1) ... [2022-07-21 09:47:50,311 INFO L137 Inliner]: procedures = 689, calls = 1514, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 736 [2022-07-21 09:47:50,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:47:50,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:47:50,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:47:50,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:47:50,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:50" (1/1) ... [2022-07-21 09:47:50,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:50" (1/1) ... [2022-07-21 09:47:50,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:50" (1/1) ... [2022-07-21 09:47:50,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:50" (1/1) ... [2022-07-21 09:47:50,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:50" (1/1) ... [2022-07-21 09:47:50,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:50" (1/1) ... [2022-07-21 09:47:50,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:50" (1/1) ... [2022-07-21 09:47:50,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:47:50,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:47:50,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:47:50,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:47:50,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:50" (1/1) ... [2022-07-21 09:47:50,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:47:50,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:50,444 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) [2022-07-21 09:47:50,469 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 [2022-07-21 09:47:50,493 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-21 09:47:50,494 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-21 09:47:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:47:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-21 09:47:50,494 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-21 09:47:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:47:50,495 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:47:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-21 09:47:50,495 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-21 09:47:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:47:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:47:50,497 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:47:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:47:50,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:47:50,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:47:50,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:47:50,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:47:50,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:47:50,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:47:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:47:50,499 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:47:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-21 09:47:50,499 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-21 09:47:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-21 09:47:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-21 09:47:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-07-21 09:47:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-07-21 09:47:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:47:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:47:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:47:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:47:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:47:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:47:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:47:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-21 09:47:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-21 09:47:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:47:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-07-21 09:47:50,503 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-07-21 09:47:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-21 09:47:50,503 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-21 09:47:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:47:50,769 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:47:50,770 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:47:51,545 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:47:51,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:47:51,556 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-21 09:47:51,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:47:51 BoogieIcfgContainer [2022-07-21 09:47:51,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:47:51,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:47:51,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:47:51,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:47:51,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:47:48" (1/3) ... [2022-07-21 09:47:51,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4240408b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:47:51, skipping insertion in model container [2022-07-21 09:47:51,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:50" (2/3) ... [2022-07-21 09:47:51,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4240408b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:47:51, skipping insertion in model container [2022-07-21 09:47:51,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:47:51" (3/3) ... [2022-07-21 09:47:51,566 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness.i [2022-07-21 09:47:51,578 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:47:51,578 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:47:51,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:47:51,647 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7136d5c9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@734302b5 [2022-07-21 09:47:51,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:47:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 129 states have internal predecessors, (163), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-07-21 09:47:51,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-21 09:47:51,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:51,664 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-07-21 09:47:51,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:51,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:51,669 INFO L85 PathProgramCache]: Analyzing trace with hash -657799819, now seen corresponding path program 1 times [2022-07-21 09:47:51,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:51,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692369825] [2022-07-21 09:47:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:51,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:52,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:47:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:52,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:47:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:47:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:47:52,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:52,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692369825] [2022-07-21 09:47:52,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-21 09:47:52,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917662578] [2022-07-21 09:47:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:52,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:52,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:52,247 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) [2022-07-21 09:47:52,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:47:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:52,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 09:47:52,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-21 09:47:52,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:52,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917662578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:52,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:52,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:47:52,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776958537] [2022-07-21 09:47:52,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:52,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:47:52,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:52,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:47:52,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:47:52,796 INFO L87 Difference]: Start difference. First operand has 197 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 129 states have internal predecessors, (163), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 09:47:52,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:52,834 INFO L93 Difference]: Finished difference Result 389 states and 571 transitions. [2022-07-21 09:47:52,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:47:52,836 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 99 [2022-07-21 09:47:52,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:52,844 INFO L225 Difference]: With dead ends: 389 [2022-07-21 09:47:52,844 INFO L226 Difference]: Without dead ends: 190 [2022-07-21 09:47:52,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:47:52,851 INFO L413 NwaCegarLoop]: 261 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, 261 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 [2022-07-21 09:47:52,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:52,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-21 09:47:52,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-07-21 09:47:52,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 121 states have (on average 1.2314049586776858) internal successors, (149), 123 states have internal predecessors, (149), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-07-21 09:47:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 253 transitions. [2022-07-21 09:47:52,897 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 253 transitions. Word has length 99 [2022-07-21 09:47:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:52,898 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 253 transitions. [2022-07-21 09:47:52,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 09:47:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 253 transitions. [2022-07-21 09:47:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 09:47:52,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:52,907 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:52,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:53,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-21 09:47:53,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:53,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:53,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1585195372, now seen corresponding path program 1 times [2022-07-21 09:47:53,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:53,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403429735] [2022-07-21 09:47:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:53,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:53,245 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:53,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871857569] [2022-07-21 09:47:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:53,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:53,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:53,247 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) [2022-07-21 09:47:53,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:47:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:53,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 09:47:53,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-21 09:47:53,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:47:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-21 09:47:54,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:54,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403429735] [2022-07-21 09:47:54,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:54,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871857569] [2022-07-21 09:47:54,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871857569] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 09:47:54,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:47:54,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2022-07-21 09:47:54,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631126509] [2022-07-21 09:47:54,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:54,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:47:54,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:54,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:47:54,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:47:54,089 INFO L87 Difference]: Start difference. First operand 190 states and 253 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-21 09:47:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:54,153 INFO L93 Difference]: Finished difference Result 198 states and 261 transitions. [2022-07-21 09:47:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:47:54,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 133 [2022-07-21 09:47:54,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:54,157 INFO L225 Difference]: With dead ends: 198 [2022-07-21 09:47:54,157 INFO L226 Difference]: Without dead ends: 196 [2022-07-21 09:47:54,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:47:54,159 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 6 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:54,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 983 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:54,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-21 09:47:54,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2022-07-21 09:47:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.2258064516129032) internal successors, (152), 127 states have internal predecessors, (152), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-21 09:47:54,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 258 transitions. [2022-07-21 09:47:54,175 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 258 transitions. Word has length 133 [2022-07-21 09:47:54,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:54,176 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 258 transitions. [2022-07-21 09:47:54,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-21 09:47:54,177 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 258 transitions. [2022-07-21 09:47:54,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 09:47:54,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:54,182 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:54,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 09:47:54,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-21 09:47:54,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1587042414, now seen corresponding path program 1 times [2022-07-21 09:47:54,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:54,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255430954] [2022-07-21 09:47:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:54,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:54,482 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:54,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081851485] [2022-07-21 09:47:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:54,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:54,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:54,492 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) [2022-07-21 09:47:54,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:47:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:54,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:47:54,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-21 09:47:54,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:54,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255430954] [2022-07-21 09:47:54,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:54,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081851485] [2022-07-21 09:47:54,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081851485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:54,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:54,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:47:54,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101717986] [2022-07-21 09:47:54,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:54,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:47:54,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:47:54,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:47:54,982 INFO L87 Difference]: Start difference. First operand 195 states and 258 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-21 09:47:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:55,088 INFO L93 Difference]: Finished difference Result 379 states and 496 transitions. [2022-07-21 09:47:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:47:55,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 133 [2022-07-21 09:47:55,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:55,096 INFO L225 Difference]: With dead ends: 379 [2022-07-21 09:47:55,096 INFO L226 Difference]: Without dead ends: 195 [2022-07-21 09:47:55,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:47:55,101 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 13 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:55,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1207 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-21 09:47:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-07-21 09:47:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.217741935483871) internal successors, (151), 127 states have internal predecessors, (151), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-21 09:47:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2022-07-21 09:47:55,121 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 133 [2022-07-21 09:47:55,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:55,122 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2022-07-21 09:47:55,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-21 09:47:55,122 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2022-07-21 09:47:55,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 09:47:55,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:55,130 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:55,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:55,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:55,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:55,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:55,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1650813770, now seen corresponding path program 1 times [2022-07-21 09:47:55,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:55,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717902165] [2022-07-21 09:47:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:55,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:55,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:55,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707495389] [2022-07-21 09:47:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:55,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:55,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:55,433 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) [2022-07-21 09:47:55,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:47:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:55,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 09:47:55,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-21 09:47:55,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:55,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:55,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717902165] [2022-07-21 09:47:55,895 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:55,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707495389] [2022-07-21 09:47:55,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707495389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:55,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:47:55,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:47:55,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551467810] [2022-07-21 09:47:55,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:55,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:47:55,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:55,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:47:55,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:47:55,898 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 09:47:55,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:55,915 INFO L93 Difference]: Finished difference Result 375 states and 493 transitions. [2022-07-21 09:47:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:47:55,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 135 [2022-07-21 09:47:55,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:55,917 INFO L225 Difference]: With dead ends: 375 [2022-07-21 09:47:55,917 INFO L226 Difference]: Without dead ends: 197 [2022-07-21 09:47:55,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:47:55,919 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 1 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:55,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 496 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:47:55,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-21 09:47:55,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2022-07-21 09:47:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 125 states have (on average 1.216) internal successors, (152), 128 states have internal predecessors, (152), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-21 09:47:55,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 258 transitions. [2022-07-21 09:47:55,931 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 258 transitions. Word has length 135 [2022-07-21 09:47:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:55,932 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 258 transitions. [2022-07-21 09:47:55,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 09:47:55,932 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 258 transitions. [2022-07-21 09:47:55,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 09:47:55,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:55,934 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:55,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:56,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:56,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:56,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:56,148 INFO L85 PathProgramCache]: Analyzing trace with hash 574277750, now seen corresponding path program 1 times [2022-07-21 09:47:56,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:56,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182277801] [2022-07-21 09:47:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:56,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:56,213 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:56,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947046515] [2022-07-21 09:47:56,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:56,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:56,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:56,224 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) [2022-07-21 09:47:56,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:47:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:56,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2417 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 09:47:56,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:56,850 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-21 09:47:56,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:47:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-21 09:47:57,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:57,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182277801] [2022-07-21 09:47:57,181 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:57,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947046515] [2022-07-21 09:47:57,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947046515] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:47:57,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:47:57,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-21 09:47:57,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026394571] [2022-07-21 09:47:57,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:47:57,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:47:57,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:57,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:47:57,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:47:57,184 INFO L87 Difference]: Start difference. First operand 196 states and 258 transitions. Second operand has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2022-07-21 09:47:57,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:57,308 INFO L93 Difference]: Finished difference Result 384 states and 500 transitions. [2022-07-21 09:47:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:47:57,309 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 139 [2022-07-21 09:47:57,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:57,311 INFO L225 Difference]: With dead ends: 384 [2022-07-21 09:47:57,311 INFO L226 Difference]: Without dead ends: 199 [2022-07-21 09:47:57,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:47:57,312 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 39 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:57,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1446 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:47:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-21 09:47:57,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2022-07-21 09:47:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 130 states have internal predecessors, (154), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-21 09:47:57,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 260 transitions. [2022-07-21 09:47:57,324 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 260 transitions. Word has length 139 [2022-07-21 09:47:57,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:57,324 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 260 transitions. [2022-07-21 09:47:57,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2022-07-21 09:47:57,325 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 260 transitions. [2022-07-21 09:47:57,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-21 09:47:57,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:57,326 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:57,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:57,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:57,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:57,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:57,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1733366986, now seen corresponding path program 2 times [2022-07-21 09:47:57,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:57,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640237865] [2022-07-21 09:47:57,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:57,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:57,612 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:57,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664908791] [2022-07-21 09:47:57,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:47:57,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:57,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:57,614 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) [2022-07-21 09:47:57,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:47:58,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:47:58,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:47:58,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-21 09:47:58,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-21 09:47:58,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:47:58,881 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-07-21 09:47:58,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:58,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640237865] [2022-07-21 09:47:58,881 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:47:58,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664908791] [2022-07-21 09:47:58,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664908791] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:47:58,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:47:58,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-21 09:47:58,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17646723] [2022-07-21 09:47:58,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:47:58,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 09:47:58,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:58,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 09:47:58,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:47:58,883 INFO L87 Difference]: Start difference. First operand 198 states and 260 transitions. Second operand has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2022-07-21 09:47:59,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:59,047 INFO L93 Difference]: Finished difference Result 388 states and 504 transitions. [2022-07-21 09:47:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:47:59,047 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 143 [2022-07-21 09:47:59,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:59,049 INFO L225 Difference]: With dead ends: 388 [2022-07-21 09:47:59,049 INFO L226 Difference]: Without dead ends: 201 [2022-07-21 09:47:59,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:47:59,051 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 32 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:59,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2169 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:47:59,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-21 09:47:59,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2022-07-21 09:47:59,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 129 states have (on average 1.2093023255813953) internal successors, (156), 132 states have internal predecessors, (156), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-21 09:47:59,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 262 transitions. [2022-07-21 09:47:59,060 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 262 transitions. Word has length 143 [2022-07-21 09:47:59,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:59,060 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 262 transitions. [2022-07-21 09:47:59,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2022-07-21 09:47:59,061 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 262 transitions. [2022-07-21 09:47:59,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-21 09:47:59,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:59,063 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:59,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:59,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:59,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:59,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:59,279 INFO L85 PathProgramCache]: Analyzing trace with hash 833600758, now seen corresponding path program 3 times [2022-07-21 09:47:59,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:59,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246709311] [2022-07-21 09:47:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:59,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:59,337 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:47:59,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295763631] [2022-07-21 09:47:59,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:47:59,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:59,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:59,339 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) [2022-07-21 09:47:59,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:48:01,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-21 09:48:01,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:48:01,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 2081 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-21 09:48:01,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 43 proven. 9 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-07-21 09:48:01,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:48:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-21 09:48:02,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:02,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246709311] [2022-07-21 09:48:02,530 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:02,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295763631] [2022-07-21 09:48:02,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295763631] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:48:02,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:48:02,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-21 09:48:02,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468894890] [2022-07-21 09:48:02,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:48:02,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 09:48:02,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:02,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 09:48:02,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:48:02,532 INFO L87 Difference]: Start difference. First operand 200 states and 262 transitions. Second operand has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2022-07-21 09:48:02,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:02,925 INFO L93 Difference]: Finished difference Result 392 states and 508 transitions. [2022-07-21 09:48:02,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 09:48:02,926 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 147 [2022-07-21 09:48:02,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:02,928 INFO L225 Difference]: With dead ends: 392 [2022-07-21 09:48:02,928 INFO L226 Difference]: Without dead ends: 203 [2022-07-21 09:48:02,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-07-21 09:48:02,930 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 34 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:02,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2876 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:48:02,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-21 09:48:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2022-07-21 09:48:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 131 states have (on average 1.2061068702290076) internal successors, (158), 134 states have internal predecessors, (158), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-21 09:48:02,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 264 transitions. [2022-07-21 09:48:02,940 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 264 transitions. Word has length 147 [2022-07-21 09:48:02,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:02,941 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 264 transitions. [2022-07-21 09:48:02,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2022-07-21 09:48:02,941 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 264 transitions. [2022-07-21 09:48:02,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-21 09:48:02,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:02,943 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:02,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:03,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:03,158 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:03,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:03,158 INFO L85 PathProgramCache]: Analyzing trace with hash 579206582, now seen corresponding path program 4 times [2022-07-21 09:48:03,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:03,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536777667] [2022-07-21 09:48:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:03,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:03,215 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:03,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477061441] [2022-07-21 09:48:03,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 09:48:03,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:03,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:03,217 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) [2022-07-21 09:48:03,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:48:03,859 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 09:48:03,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:48:03,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-21 09:48:03,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 58 proven. 16 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-07-21 09:48:04,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:48:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-07-21 09:48:04,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:04,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536777667] [2022-07-21 09:48:04,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:04,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477061441] [2022-07-21 09:48:04,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477061441] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:48:04,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:48:04,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-21 09:48:04,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134329452] [2022-07-21 09:48:04,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:48:04,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 09:48:04,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:04,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 09:48:04,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:48:04,467 INFO L87 Difference]: Start difference. First operand 202 states and 264 transitions. Second operand has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 19 states have internal predecessors, (81), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2022-07-21 09:48:04,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:04,654 INFO L93 Difference]: Finished difference Result 396 states and 512 transitions. [2022-07-21 09:48:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:48:04,655 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 19 states have internal predecessors, (81), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) Word has length 151 [2022-07-21 09:48:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:04,656 INFO L225 Difference]: With dead ends: 396 [2022-07-21 09:48:04,656 INFO L226 Difference]: Without dead ends: 205 [2022-07-21 09:48:04,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:48:04,658 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 41 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:04,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2178 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:48:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-21 09:48:04,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2022-07-21 09:48:04,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 136 states have internal predecessors, (160), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-21 09:48:04,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 266 transitions. [2022-07-21 09:48:04,667 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 266 transitions. Word has length 151 [2022-07-21 09:48:04,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:04,667 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 266 transitions. [2022-07-21 09:48:04,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 19 states have internal predecessors, (81), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2022-07-21 09:48:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 266 transitions. [2022-07-21 09:48:04,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 09:48:04,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:04,670 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:04,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:04,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-21 09:48:04,895 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:04,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:04,896 INFO L85 PathProgramCache]: Analyzing trace with hash -519410314, now seen corresponding path program 5 times [2022-07-21 09:48:04,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:04,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709585985] [2022-07-21 09:48:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:04,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:04,973 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:04,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951455652] [2022-07-21 09:48:04,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-21 09:48:04,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:04,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:04,975 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) [2022-07-21 09:48:04,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:48:06,235 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-07-21 09:48:06,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:48:06,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-21 09:48:06,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 209 proven. 25 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-07-21 09:48:06,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:48:07,255 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-21 09:48:07,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:07,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709585985] [2022-07-21 09:48:07,256 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:07,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951455652] [2022-07-21 09:48:07,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951455652] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:48:07,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:48:07,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2022-07-21 09:48:07,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88005238] [2022-07-21 09:48:07,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:48:07,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 09:48:07,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:07,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 09:48:07,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2022-07-21 09:48:07,258 INFO L87 Difference]: Start difference. First operand 204 states and 266 transitions. Second operand has 27 states, 25 states have (on average 3.92) internal successors, (98), 27 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2022-07-21 09:48:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:07,987 INFO L93 Difference]: Finished difference Result 400 states and 516 transitions. [2022-07-21 09:48:07,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:48:07,991 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.92) internal successors, (98), 27 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 155 [2022-07-21 09:48:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:07,994 INFO L225 Difference]: With dead ends: 400 [2022-07-21 09:48:07,995 INFO L226 Difference]: Without dead ends: 207 [2022-07-21 09:48:07,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2022-07-21 09:48:07,997 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 49 mSDsluCounter, 3611 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:07,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3856 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:48:07,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-21 09:48:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2022-07-21 09:48:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 135 states have (on average 1.2) internal successors, (162), 138 states have internal predecessors, (162), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-21 09:48:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 268 transitions. [2022-07-21 09:48:08,011 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 268 transitions. Word has length 155 [2022-07-21 09:48:08,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:08,011 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 268 transitions. [2022-07-21 09:48:08,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.92) internal successors, (98), 27 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2022-07-21 09:48:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 268 transitions. [2022-07-21 09:48:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-21 09:48:08,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:08,013 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:08,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:08,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:08,222 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:08,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:08,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1604701238, now seen corresponding path program 6 times [2022-07-21 09:48:08,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:08,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993676297] [2022-07-21 09:48:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:08,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:08,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:08,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031254859] [2022-07-21 09:48:08,300 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-21 09:48:08,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:08,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:08,302 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) [2022-07-21 09:48:08,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process