./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_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 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:22:10,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:22:10,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:22:10,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:22:10,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:22:10,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:22:10,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:22:10,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:22:10,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:22:10,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:22:10,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:22:10,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:22:10,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:22:10,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:22:10,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:22:10,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:22:10,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:22:10,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:22:10,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:22:10,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:22:10,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:22:10,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:22:10,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:22:10,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:22:10,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:22:10,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:22:10,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:22:10,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:22:10,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:22:10,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:22:10,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:22:10,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:22:10,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:22:10,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:22:10,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:22:10,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:22:10,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:22:10,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:22:10,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:22:10,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:22:10,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:22:10,924 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:22:10,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:22:10,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:22:10,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:22:10,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:22:10,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:22:10,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:22:10,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:22:10,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:22:10,952 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:22:10,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:22:10,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:22:10,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:22:10,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:22:10,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:22:10,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:22:10,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:22:10,954 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:22:10,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:22:10,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:22:10,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:22:10,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:22:10,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:22:10,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:22:10,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:22:10,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:22:10,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:22:10,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:22:10,956 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:22:10,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:22:10,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:22:10,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 [2021-12-28 03:22:11,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:22:11,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:22:11,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:22:11,274 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:22:11,275 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:22:11,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i [2021-12-28 03:22:11,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8fbc4306/5a428e1f23b24690838852d764b8af91/FLAG4cb5b55a2 [2021-12-28 03:22:11,907 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:22:11,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i [2021-12-28 03:22:11,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8fbc4306/5a428e1f23b24690838852d764b8af91/FLAG4cb5b55a2 [2021-12-28 03:22:12,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8fbc4306/5a428e1f23b24690838852d764b8af91 [2021-12-28 03:22:12,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:22:12,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:22:12,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:22:12,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:22:12,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:22:12,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:22:12" (1/1) ... [2021-12-28 03:22:12,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d52b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:12, skipping insertion in model container [2021-12-28 03:22:12,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:22:12" (1/1) ... [2021-12-28 03:22:12,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:22:12,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:22:12,602 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_size_harness.i[4497,4510] [2021-12-28 03:22:12,606 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_size_harness.i[4557,4570] [2021-12-28 03:22:13,079 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:22:13,140 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,143 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,146 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,160 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,163 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,165 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,166 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,341 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:22:13,342 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:22:13,343 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:22:13,343 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:22:13,344 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:22:13,344 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:22:13,345 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:22:13,345 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:22:13,346 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:22:13,346 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:22:13,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:22:13,467 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:22:13,476 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_size_harness.i[4497,4510] [2021-12-28 03:22:13,477 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_size_harness.i[4557,4570] [2021-12-28 03:22:13,495 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:22:13,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,539 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,584 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:22:13,585 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:22:13,586 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:22:13,587 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:22:13,588 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:22:13,590 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:22:13,590 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:22:13,591 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:22:13,591 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:22:13,591 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:22:13,626 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,628 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:13,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:22:13,876 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:22:13,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:13 WrapperNode [2021-12-28 03:22:13,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:22:13,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:22:13,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:22:13,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:22:13,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:13" (1/1) ... [2021-12-28 03:22:13,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:13" (1/1) ... [2021-12-28 03:22:13,995 INFO L137 Inliner]: procedures = 689, calls = 1531, calls flagged for inlining = 55, calls inlined = 10, statements flattened = 667 [2021-12-28 03:22:13,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:22:13,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:22:13,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:22:13,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:22:14,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:13" (1/1) ... [2021-12-28 03:22:14,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:13" (1/1) ... [2021-12-28 03:22:14,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:13" (1/1) ... [2021-12-28 03:22:14,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:13" (1/1) ... [2021-12-28 03:22:14,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:13" (1/1) ... [2021-12-28 03:22:14,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:13" (1/1) ... [2021-12-28 03:22:14,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:13" (1/1) ... [2021-12-28 03:22:14,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:22:14,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:22:14,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:22:14,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:22:14,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:13" (1/1) ... [2021-12-28 03:22:14,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:22:14,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:14,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:22:14,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:22:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-28 03:22:14,162 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-28 03:22:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:22:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-28 03:22:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-28 03:22:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-28 03:22:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-28 03:22:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:22:14,164 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:22:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:22:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:22:14,165 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:22:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:22:14,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:22:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:22:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:22:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-28 03:22:14,166 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-28 03:22:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:22:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:22:14,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:22:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:22:14,167 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:22:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-28 03:22:14,167 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-28 03:22:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:22:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:22:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-28 03:22:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-28 03:22:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-28 03:22:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-28 03:22:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:22:14,169 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:22:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:22:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:22:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:22:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-28 03:22:14,169 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-28 03:22:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:22:14,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:22:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:22:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2021-12-28 03:22:14,170 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2021-12-28 03:22:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:22:14,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:22:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:22:14,358 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:22:14,359 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:22:14,904 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:22:14,912 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:22:14,912 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 03:22:14,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:22:14 BoogieIcfgContainer [2021-12-28 03:22:14,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:22:14,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:22:14,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:22:14,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:22:14,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:22:12" (1/3) ... [2021-12-28 03:22:14,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ce39a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:22:14, skipping insertion in model container [2021-12-28 03:22:14,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:13" (2/3) ... [2021-12-28 03:22:14,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ce39a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:22:14, skipping insertion in model container [2021-12-28 03:22:14,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:22:14" (3/3) ... [2021-12-28 03:22:14,921 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_size_harness.i [2021-12-28 03:22:14,925 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:22:14,925 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:22:14,965 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:22:14,978 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:22:14,978 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:22:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 114 states have internal predecessors, (139), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-28 03:22:15,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-28 03:22:15,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:15,015 INFO L514 BasicCegarLoop]: trace histogram [6, 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] [2021-12-28 03:22:15,015 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:15,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:15,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1923135121, now seen corresponding path program 1 times [2021-12-28 03:22:15,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:15,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017602656] [2021-12-28 03:22:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:15,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:22:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:22:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:22:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:22:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:22:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:22:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:22:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:22:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:22:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:22:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:22:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:22:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:22:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:22:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:22:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:22:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:22:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-28 03:22:15,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:15,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017602656] [2021-12-28 03:22:15,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017602656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:15,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:15,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:22:15,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189491086] [2021-12-28 03:22:15,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:15,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:22:15,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:15,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:22:15,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:22:15,807 INFO L87 Difference]: Start difference. First operand has 171 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 114 states have internal predecessors, (139), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 03:22:16,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:16,297 INFO L93 Difference]: Finished difference Result 399 states and 564 transitions. [2021-12-28 03:22:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:22:16,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 107 [2021-12-28 03:22:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:16,307 INFO L225 Difference]: With dead ends: 399 [2021-12-28 03:22:16,323 INFO L226 Difference]: Without dead ends: 234 [2021-12-28 03:22:16,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:22:16,329 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 131 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:16,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 356 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 03:22:16,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-28 03:22:16,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 166. [2021-12-28 03:22:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-28 03:22:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 209 transitions. [2021-12-28 03:22:16,389 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 209 transitions. Word has length 107 [2021-12-28 03:22:16,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:16,390 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 209 transitions. [2021-12-28 03:22:16,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 03:22:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 209 transitions. [2021-12-28 03:22:16,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-28 03:22:16,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:16,394 INFO L514 BasicCegarLoop]: trace histogram [6, 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] [2021-12-28 03:22:16,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:22:16,394 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:16,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:16,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1898390481, now seen corresponding path program 1 times [2021-12-28 03:22:16,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:16,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871175497] [2021-12-28 03:22:16,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:16,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:22:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:22:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:22:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:22:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:22:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:22:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:22:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:22:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:22:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:22:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:22:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:22:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:22:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:22:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:22:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:22:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:22:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-28 03:22:16,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:16,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871175497] [2021-12-28 03:22:16,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871175497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:16,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:16,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:22:16,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69365786] [2021-12-28 03:22:16,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:16,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:22:16,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:16,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:22:16,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:22:16,724 INFO L87 Difference]: Start difference. First operand 166 states and 209 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-28 03:22:17,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:17,328 INFO L93 Difference]: Finished difference Result 358 states and 477 transitions. [2021-12-28 03:22:17,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:22:17,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 107 [2021-12-28 03:22:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:17,336 INFO L225 Difference]: With dead ends: 358 [2021-12-28 03:22:17,337 INFO L226 Difference]: Without dead ends: 234 [2021-12-28 03:22:17,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:22:17,345 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 288 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:17,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 515 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:22:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-28 03:22:17,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 166. [2021-12-28 03:22:17,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 109 states have (on average 1.201834862385321) internal successors, (131), 110 states have internal predecessors, (131), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-28 03:22:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 208 transitions. [2021-12-28 03:22:17,375 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 208 transitions. Word has length 107 [2021-12-28 03:22:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:17,376 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 208 transitions. [2021-12-28 03:22:17,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-28 03:22:17,376 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 208 transitions. [2021-12-28 03:22:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-28 03:22:17,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:17,378 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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] [2021-12-28 03:22:17,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:22:17,378 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:17,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:17,378 INFO L85 PathProgramCache]: Analyzing trace with hash 413511437, now seen corresponding path program 1 times [2021-12-28 03:22:17,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:17,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115213068] [2021-12-28 03:22:17,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:17,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:22:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:22:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:22:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:22:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:22:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:22:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:22:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:22:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:22:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:22:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:22:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:22:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:22:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:22:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:22:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:22:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:22:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:22:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,773 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-28 03:22:17,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:17,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115213068] [2021-12-28 03:22:17,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115213068] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:22:17,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928130115] [2021-12-28 03:22:17,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:17,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:17,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:17,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:17,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:22:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:22:18,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-28 03:22:18,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:18,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928130115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:18,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:22:18,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-28 03:22:18,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895984523] [2021-12-28 03:22:18,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:18,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:22:18,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:18,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:22:18,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:22:18,447 INFO L87 Difference]: Start difference. First operand 166 states and 208 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-28 03:22:18,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:18,547 INFO L93 Difference]: Finished difference Result 309 states and 396 transitions. [2021-12-28 03:22:18,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:22:18,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 115 [2021-12-28 03:22:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:18,549 INFO L225 Difference]: With dead ends: 309 [2021-12-28 03:22:18,549 INFO L226 Difference]: Without dead ends: 168 [2021-12-28 03:22:18,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:22:18,550 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 81 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:18,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1075 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:22:18,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-28 03:22:18,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-12-28 03:22:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.2) internal successors, (132), 112 states have internal predecessors, (132), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2021-12-28 03:22:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 212 transitions. [2021-12-28 03:22:18,560 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 212 transitions. Word has length 115 [2021-12-28 03:22:18,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:18,561 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 212 transitions. [2021-12-28 03:22:18,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-28 03:22:18,561 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 212 transitions. [2021-12-28 03:22:18,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 03:22:18,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:18,563 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:18,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:18,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:18,783 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:18,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:18,784 INFO L85 PathProgramCache]: Analyzing trace with hash -445935835, now seen corresponding path program 1 times [2021-12-28 03:22:18,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:18,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260916072] [2021-12-28 03:22:18,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:18,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:18,830 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:18,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230553580] [2021-12-28 03:22:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:18,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:18,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:18,832 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:18,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:22:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:19,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:22:19,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-28 03:22:19,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:19,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:19,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260916072] [2021-12-28 03:22:19,502 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:19,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230553580] [2021-12-28 03:22:19,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230553580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:19,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:19,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:22:19,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079233940] [2021-12-28 03:22:19,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:19,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:22:19,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:19,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:22:19,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:22:19,503 INFO L87 Difference]: Start difference. First operand 168 states and 212 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-28 03:22:19,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:19,526 INFO L93 Difference]: Finished difference Result 297 states and 384 transitions. [2021-12-28 03:22:19,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:22:19,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2021-12-28 03:22:19,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:19,528 INFO L225 Difference]: With dead ends: 297 [2021-12-28 03:22:19,528 INFO L226 Difference]: Without dead ends: 173 [2021-12-28 03:22:19,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:22:19,529 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 10 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:19,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 611 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:22:19,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-28 03:22:19,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2021-12-28 03:22:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 114 states have internal predecessors, (134), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2021-12-28 03:22:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2021-12-28 03:22:19,539 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 130 [2021-12-28 03:22:19,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:19,539 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2021-12-28 03:22:19,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-28 03:22:19,540 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2021-12-28 03:22:19,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 03:22:19,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:19,541 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:19,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:19,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-28 03:22:19,762 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:19,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash -879664921, now seen corresponding path program 1 times [2021-12-28 03:22:19,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:19,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241075336] [2021-12-28 03:22:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:19,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:19,806 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:19,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833200846] [2021-12-28 03:22:19,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:19,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:19,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:19,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:19,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:22:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:20,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:22:20,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-28 03:22:20,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:20,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:20,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241075336] [2021-12-28 03:22:20,383 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:20,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833200846] [2021-12-28 03:22:20,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833200846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:20,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:20,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:22:20,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621545459] [2021-12-28 03:22:20,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:20,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:22:20,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:20,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:22:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:22:20,386 INFO L87 Difference]: Start difference. First operand 170 states and 214 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-28 03:22:20,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:20,510 INFO L93 Difference]: Finished difference Result 299 states and 378 transitions. [2021-12-28 03:22:20,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:22:20,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 130 [2021-12-28 03:22:20,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:20,512 INFO L225 Difference]: With dead ends: 299 [2021-12-28 03:22:20,512 INFO L226 Difference]: Without dead ends: 170 [2021-12-28 03:22:20,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:22:20,513 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 243 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:20,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 830 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:22:20,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-28 03:22:20,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-12-28 03:22:20,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1875) internal successors, (133), 114 states have internal predecessors, (133), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2021-12-28 03:22:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 213 transitions. [2021-12-28 03:22:20,523 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 213 transitions. Word has length 130 [2021-12-28 03:22:20,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:20,523 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 213 transitions. [2021-12-28 03:22:20,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-28 03:22:20,524 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 213 transitions. [2021-12-28 03:22:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-28 03:22:20,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:20,525 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:20,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:20,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:20,743 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:20,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:20,744 INFO L85 PathProgramCache]: Analyzing trace with hash 391202648, now seen corresponding path program 1 times [2021-12-28 03:22:20,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:20,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420031046] [2021-12-28 03:22:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:20,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:20,813 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:20,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479055351] [2021-12-28 03:22:20,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:20,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:20,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:20,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:20,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:22:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:21,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:22:21,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-28 03:22:21,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:21,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:21,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420031046] [2021-12-28 03:22:21,481 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:21,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479055351] [2021-12-28 03:22:21,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479055351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:21,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:21,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:22:21,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663171843] [2021-12-28 03:22:21,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:21,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:22:21,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:21,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:22:21,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:22:21,484 INFO L87 Difference]: Start difference. First operand 170 states and 213 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-28 03:22:21,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:21,634 INFO L93 Difference]: Finished difference Result 312 states and 395 transitions. [2021-12-28 03:22:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:22:21,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 146 [2021-12-28 03:22:21,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:21,636 INFO L225 Difference]: With dead ends: 312 [2021-12-28 03:22:21,636 INFO L226 Difference]: Without dead ends: 170 [2021-12-28 03:22:21,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:22:21,637 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 104 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:21,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1200 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:22:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-28 03:22:21,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-12-28 03:22:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1875) internal successors, (133), 114 states have internal predecessors, (133), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2021-12-28 03:22:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 212 transitions. [2021-12-28 03:22:21,649 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 212 transitions. Word has length 146 [2021-12-28 03:22:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:21,650 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 212 transitions. [2021-12-28 03:22:21,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-28 03:22:21,651 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 212 transitions. [2021-12-28 03:22:21,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-28 03:22:21,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:21,664 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:21,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:21,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:21,884 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:21,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:21,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1071073244, now seen corresponding path program 2 times [2021-12-28 03:22:21,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:21,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676608654] [2021-12-28 03:22:21,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:21,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:21,925 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:21,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398443505] [2021-12-28 03:22:21,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:22:21,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:21,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:21,956 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:21,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:22:22,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:22:22,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:22:22,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:22:22,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-28 03:22:22,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:22,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:22,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676608654] [2021-12-28 03:22:22,782 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:22,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398443505] [2021-12-28 03:22:22,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398443505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:22,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:22,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:22:22,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022034948] [2021-12-28 03:22:22,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:22,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:22:22,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:22,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:22:22,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:22:22,784 INFO L87 Difference]: Start difference. First operand 170 states and 212 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-28 03:22:22,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:22,986 INFO L93 Difference]: Finished difference Result 277 states and 343 transitions. [2021-12-28 03:22:22,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:22:22,986 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 161 [2021-12-28 03:22:22,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:22,988 INFO L225 Difference]: With dead ends: 277 [2021-12-28 03:22:22,988 INFO L226 Difference]: Without dead ends: 168 [2021-12-28 03:22:22,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:22:22,989 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 213 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:22,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 1147 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:22:22,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-28 03:22:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-12-28 03:22:22,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 112 states have internal predecessors, (131), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-28 03:22:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 208 transitions. [2021-12-28 03:22:23,000 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 208 transitions. Word has length 161 [2021-12-28 03:22:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:23,000 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 208 transitions. [2021-12-28 03:22:23,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-28 03:22:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 208 transitions. [2021-12-28 03:22:23,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-28 03:22:23,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:23,002 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:23,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:23,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:23,225 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:23,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:23,226 INFO L85 PathProgramCache]: Analyzing trace with hash 153523288, now seen corresponding path program 1 times [2021-12-28 03:22:23,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:23,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899767531] [2021-12-28 03:22:23,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:23,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:23,272 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:23,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79610096] [2021-12-28 03:22:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:23,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:23,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:23,288 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:23,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:22:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:23,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:22:23,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-28 03:22:24,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:24,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:24,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899767531] [2021-12-28 03:22:24,292 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:24,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79610096] [2021-12-28 03:22:24,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79610096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:24,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:24,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:22:24,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582087894] [2021-12-28 03:22:24,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:24,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:22:24,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:24,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:22:24,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:22:24,294 INFO L87 Difference]: Start difference. First operand 168 states and 208 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:22:24,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:24,498 INFO L93 Difference]: Finished difference Result 310 states and 389 transitions. [2021-12-28 03:22:24,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:22:24,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-12-28 03:22:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:24,500 INFO L225 Difference]: With dead ends: 310 [2021-12-28 03:22:24,500 INFO L226 Difference]: Without dead ends: 186 [2021-12-28 03:22:24,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:22:24,501 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 21 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:24,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 903 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:22:24,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-12-28 03:22:24,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2021-12-28 03:22:24,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 115 states have (on average 1.182608695652174) internal successors, (136), 116 states have internal predecessors, (136), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-28 03:22:24,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 213 transitions. [2021-12-28 03:22:24,511 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 213 transitions. Word has length 191 [2021-12-28 03:22:24,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:24,512 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 213 transitions. [2021-12-28 03:22:24,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:22:24,512 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 213 transitions. [2021-12-28 03:22:24,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-28 03:22:24,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:24,514 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:24,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:24,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:24,736 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:24,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:24,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1805051498, now seen corresponding path program 1 times [2021-12-28 03:22:24,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:24,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626030100] [2021-12-28 03:22:24,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:24,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:24,806 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:24,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859927461] [2021-12-28 03:22:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:24,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:24,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:24,824 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:24,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:22:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:25,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:22:25,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-28 03:22:25,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:25,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:25,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626030100] [2021-12-28 03:22:25,545 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:25,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859927461] [2021-12-28 03:22:25,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859927461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:25,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:25,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:22:25,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249617320] [2021-12-28 03:22:25,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:25,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:22:25,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:25,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:22:25,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:22:25,546 INFO L87 Difference]: Start difference. First operand 172 states and 213 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:22:25,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:25,565 INFO L93 Difference]: Finished difference Result 304 states and 379 transitions. [2021-12-28 03:22:25,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:22:25,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-12-28 03:22:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:25,567 INFO L225 Difference]: With dead ends: 304 [2021-12-28 03:22:25,567 INFO L226 Difference]: Without dead ends: 176 [2021-12-28 03:22:25,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:22:25,569 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 3 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:25,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 604 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:22:25,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-12-28 03:22:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2021-12-28 03:22:25,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 118 states have internal predecessors, (138), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-28 03:22:25,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 215 transitions. [2021-12-28 03:22:25,583 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 215 transitions. Word has length 191 [2021-12-28 03:22:25,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:25,584 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 215 transitions. [2021-12-28 03:22:25,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:22:25,585 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 215 transitions. [2021-12-28 03:22:25,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-28 03:22:25,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:25,586 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:25,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:25,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:25,808 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:25,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash 610784852, now seen corresponding path program 1 times [2021-12-28 03:22:25,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:25,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331224458] [2021-12-28 03:22:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:25,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:25,856 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:25,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812625662] [2021-12-28 03:22:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:25,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:25,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:25,858 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:25,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:22:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:26,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-28 03:22:26,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:26,632 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-12-28 03:22:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-28 03:22:26,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:26,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:26,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331224458] [2021-12-28 03:22:26,751 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:26,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812625662] [2021-12-28 03:22:26,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812625662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:26,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:26,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:22:26,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366497397] [2021-12-28 03:22:26,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:26,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:22:26,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:26,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:22:26,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:22:26,756 INFO L87 Difference]: Start difference. First operand 174 states and 215 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-28 03:22:27,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:27,120 INFO L93 Difference]: Finished difference Result 329 states and 415 transitions. [2021-12-28 03:22:27,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:22:27,120 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 191 [2021-12-28 03:22:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:27,121 INFO L225 Difference]: With dead ends: 329 [2021-12-28 03:22:27,121 INFO L226 Difference]: Without dead ends: 197 [2021-12-28 03:22:27,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:22:27,122 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 119 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:27,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 1349 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:22:27,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-28 03:22:27,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2021-12-28 03:22:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 129 states have (on average 1.186046511627907) internal successors, (153), 130 states have internal predecessors, (153), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-28 03:22:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 234 transitions. [2021-12-28 03:22:27,132 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 234 transitions. Word has length 191 [2021-12-28 03:22:27,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:27,133 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 234 transitions. [2021-12-28 03:22:27,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-28 03:22:27,133 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 234 transitions. [2021-12-28 03:22:27,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-28 03:22:27,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:27,135 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:27,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-28 03:22:27,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-28 03:22:27,353 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:27,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:27,353 INFO L85 PathProgramCache]: Analyzing trace with hash -841170410, now seen corresponding path program 1 times [2021-12-28 03:22:27,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:27,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895232619] [2021-12-28 03:22:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:27,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:27,427 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:27,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512263210] [2021-12-28 03:22:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:27,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:27,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:27,429 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:27,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:22:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:27,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-28 03:22:27,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-28 03:22:28,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:28,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:28,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895232619] [2021-12-28 03:22:28,091 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:28,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512263210] [2021-12-28 03:22:28,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512263210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:28,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:28,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:22:28,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009150482] [2021-12-28 03:22:28,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:28,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:22:28,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:28,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:22:28,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:22:28,093 INFO L87 Difference]: Start difference. First operand 187 states and 234 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:22:28,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:28,120 INFO L93 Difference]: Finished difference Result 346 states and 437 transitions. [2021-12-28 03:22:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:22:28,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-12-28 03:22:28,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:28,123 INFO L225 Difference]: With dead ends: 346 [2021-12-28 03:22:28,123 INFO L226 Difference]: Without dead ends: 203 [2021-12-28 03:22:28,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:22:28,124 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 9 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:28,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 826 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:22:28,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-28 03:22:28,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2021-12-28 03:22:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 139 states have (on average 1.1870503597122302) internal successors, (165), 140 states have internal predecessors, (165), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-28 03:22:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 246 transitions. [2021-12-28 03:22:28,134 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 246 transitions. Word has length 191 [2021-12-28 03:22:28,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:28,134 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 246 transitions. [2021-12-28 03:22:28,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:22:28,134 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 246 transitions. [2021-12-28 03:22:28,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-28 03:22:28,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:28,136 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:28,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:28,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:28,356 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:28,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2030586518, now seen corresponding path program 1 times [2021-12-28 03:22:28,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:28,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815347306] [2021-12-28 03:22:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:28,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:28,438 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:28,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466780888] [2021-12-28 03:22:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:28,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:28,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:28,452 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:28,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:22:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:29,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:22:29,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-28 03:22:29,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:29,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:29,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815347306] [2021-12-28 03:22:29,239 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:29,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466780888] [2021-12-28 03:22:29,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466780888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:29,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:29,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:22:29,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431573692] [2021-12-28 03:22:29,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:29,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:22:29,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:29,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:22:29,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:22:29,241 INFO L87 Difference]: Start difference. First operand 197 states and 246 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:22:29,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:29,264 INFO L93 Difference]: Finished difference Result 346 states and 434 transitions. [2021-12-28 03:22:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:22:29,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-12-28 03:22:29,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:29,267 INFO L225 Difference]: With dead ends: 346 [2021-12-28 03:22:29,267 INFO L226 Difference]: Without dead ends: 193 [2021-12-28 03:22:29,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:22:29,268 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:29,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 606 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:22:29,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-12-28 03:22:29,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2021-12-28 03:22:29,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 131 states have (on average 1.16793893129771) internal successors, (153), 132 states have internal predecessors, (153), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-28 03:22:29,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 234 transitions. [2021-12-28 03:22:29,284 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 234 transitions. Word has length 191 [2021-12-28 03:22:29,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:29,286 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 234 transitions. [2021-12-28 03:22:29,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:22:29,286 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 234 transitions. [2021-12-28 03:22:29,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-28 03:22:29,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:29,288 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:29,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:29,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-28 03:22:29,510 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:29,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:29,511 INFO L85 PathProgramCache]: Analyzing trace with hash 955866556, now seen corresponding path program 1 times [2021-12-28 03:22:29,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:29,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207233645] [2021-12-28 03:22:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:29,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:29,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:29,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263430512] [2021-12-28 03:22:29,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:29,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:29,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:29,572 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:29,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 03:22:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:30,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:22:30,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:30,369 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-28 03:22:30,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:30,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:30,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207233645] [2021-12-28 03:22:30,370 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:30,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263430512] [2021-12-28 03:22:30,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263430512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:30,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:30,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:22:30,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607194940] [2021-12-28 03:22:30,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:30,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:22:30,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:30,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:22:30,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:22:30,372 INFO L87 Difference]: Start difference. First operand 189 states and 234 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:22:30,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:30,523 INFO L93 Difference]: Finished difference Result 334 states and 421 transitions. [2021-12-28 03:22:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:22:30,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 193 [2021-12-28 03:22:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:30,525 INFO L225 Difference]: With dead ends: 334 [2021-12-28 03:22:30,525 INFO L226 Difference]: Without dead ends: 189 [2021-12-28 03:22:30,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:22:30,526 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:30,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 755 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:22:30,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-28 03:22:30,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-12-28 03:22:30,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 131 states have (on average 1.1603053435114503) internal successors, (152), 132 states have internal predecessors, (152), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-28 03:22:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 233 transitions. [2021-12-28 03:22:30,536 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 233 transitions. Word has length 193 [2021-12-28 03:22:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:30,536 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 233 transitions. [2021-12-28 03:22:30,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:22:30,536 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 233 transitions. [2021-12-28 03:22:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-28 03:22:30,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:30,538 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:30,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:30,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-28 03:22:30,761 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:30,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:30,762 INFO L85 PathProgramCache]: Analyzing trace with hash -100864646, now seen corresponding path program 1 times [2021-12-28 03:22:30,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:30,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698106680] [2021-12-28 03:22:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:30,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:30,821 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:30,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878729610] [2021-12-28 03:22:30,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:30,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:30,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:30,824 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:30,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 03:22:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:31,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 103 conjunts are in the unsatisfiable core [2021-12-28 03:22:31,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:36,802 INFO L353 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-28 03:22:36,803 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2021-12-28 03:22:36,810 INFO L353 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-28 03:22:36,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2021-12-28 03:22:36,819 INFO L353 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-28 03:22:36,820 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-28 03:22:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 129 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-28 03:22:37,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:22:37,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:37,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698106680] [2021-12-28 03:22:37,655 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:37,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878729610] [2021-12-28 03:22:37,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878729610] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:22:37,655 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:22:37,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-12-28 03:22:37,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597631230] [2021-12-28 03:22:37,657 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 03:22:37,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-28 03:22:37,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:37,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-28 03:22:37,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=842, Unknown=1, NotChecked=0, Total=930 [2021-12-28 03:22:37,659 INFO L87 Difference]: Start difference. First operand 189 states and 233 transitions. Second operand has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-28 03:22:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:45,826 INFO L93 Difference]: Finished difference Result 427 states and 543 transitions. [2021-12-28 03:22:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-28 03:22:45,827 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) Word has length 193 [2021-12-28 03:22:45,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:45,828 INFO L225 Difference]: With dead ends: 427 [2021-12-28 03:22:45,828 INFO L226 Difference]: Without dead ends: 294 [2021-12-28 03:22:45,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 228 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=354, Invalid=3183, Unknown=3, NotChecked=0, Total=3540 [2021-12-28 03:22:45,830 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 340 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 3444 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 3854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 3444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:45,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 1494 Invalid, 3854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 3444 Invalid, 0 Unknown, 250 Unchecked, 2.5s Time] [2021-12-28 03:22:45,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-12-28 03:22:45,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 214. [2021-12-28 03:22:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 149 states have (on average 1.1543624161073827) internal successors, (172), 152 states have internal predecessors, (172), 43 states have call successors, (43), 18 states have call predecessors, (43), 21 states have return successors, (51), 43 states have call predecessors, (51), 42 states have call successors, (51) [2021-12-28 03:22:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 266 transitions. [2021-12-28 03:22:45,841 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 266 transitions. Word has length 193 [2021-12-28 03:22:45,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:45,841 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 266 transitions. [2021-12-28 03:22:45,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-28 03:22:45,841 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 266 transitions. [2021-12-28 03:22:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-28 03:22:45,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:45,842 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:45,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:46,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-28 03:22:46,055 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:46,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash -348469826, now seen corresponding path program 1 times [2021-12-28 03:22:46,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:46,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201653144] [2021-12-28 03:22:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:46,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:46,126 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:46,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185387241] [2021-12-28 03:22:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:46,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:46,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:46,129 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:46,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-28 03:22:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:46,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 3023 conjuncts, 112 conjunts are in the unsatisfiable core [2021-12-28 03:22:46,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:46,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 03:22:47,174 INFO L353 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-28 03:22:47,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-28 03:22:49,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:22:49,255 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-28 03:22:52,167 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2060 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2060) |c_#memory_int|)) is different from true [2021-12-28 03:22:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 140 proven. 20 refuted. 2 times theorem prover too weak. 52 trivial. 3 not checked. [2021-12-28 03:22:53,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:22:54,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:54,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201653144] [2021-12-28 03:22:54,339 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:54,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185387241] [2021-12-28 03:22:54,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185387241] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:22:54,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:22:54,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-12-28 03:22:54,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801153360] [2021-12-28 03:22:54,339 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 03:22:54,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-28 03:22:54,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:54,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-28 03:22:54,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=856, Unknown=38, NotChecked=60, Total=1056 [2021-12-28 03:22:54,341 INFO L87 Difference]: Start difference. First operand 214 states and 266 transitions. Second operand has 32 states, 28 states have (on average 4.107142857142857) internal successors, (115), 27 states have internal predecessors, (115), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2021-12-28 03:22:54,851 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2060 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2060) |c_#memory_int|)) (exists ((v_ArrVal_2058 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2058) |c_#memory_int|)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_96| Int) (v_ArrVal_2057 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_96| v_ArrVal_2057)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_96|) 0)))) is different from true [2021-12-28 03:22:55,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:55,480 INFO L93 Difference]: Finished difference Result 450 states and 565 transitions. [2021-12-28 03:22:55,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-28 03:22:55,481 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 4.107142857142857) internal successors, (115), 27 states have internal predecessors, (115), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) Word has length 200 [2021-12-28 03:22:55,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:55,482 INFO L225 Difference]: With dead ends: 450 [2021-12-28 03:22:55,482 INFO L226 Difference]: Without dead ends: 283 [2021-12-28 03:22:55,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 247 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=151, Invalid=1367, Unknown=50, NotChecked=154, Total=1722 [2021-12-28 03:22:55,484 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 216 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 3087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1985 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:55,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 1082 Invalid, 3087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 944 Invalid, 0 Unknown, 1985 Unchecked, 0.7s Time] [2021-12-28 03:22:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-12-28 03:22:55,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 265. [2021-12-28 03:22:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 189 states have (on average 1.1481481481481481) internal successors, (217), 195 states have internal predecessors, (217), 46 states have call successors, (46), 21 states have call predecessors, (46), 29 states have return successors, (72), 48 states have call predecessors, (72), 45 states have call successors, (72) [2021-12-28 03:22:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 335 transitions. [2021-12-28 03:22:55,500 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 335 transitions. Word has length 200 [2021-12-28 03:22:55,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:55,501 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 335 transitions. [2021-12-28 03:22:55,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 4.107142857142857) internal successors, (115), 27 states have internal predecessors, (115), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2021-12-28 03:22:55,501 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 335 transitions. [2021-12-28 03:22:55,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-28 03:22:55,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:55,502 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:55,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:55,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-28 03:22:55,725 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:55,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:55,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2062409755, now seen corresponding path program 1 times [2021-12-28 03:22:55,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:55,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530464490] [2021-12-28 03:22:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:55,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:55,780 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:55,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166829391] [2021-12-28 03:22:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:55,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:55,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:55,782 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:55,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-28 03:22:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:56,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 3062 conjuncts, 184 conjunts are in the unsatisfiable core [2021-12-28 03:22:56,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:56,459 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 03:22:56,787 INFO L353 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-28 03:22:56,787 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-28 03:23:13,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-28 03:23:13,336 INFO L353 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-12-28 03:23:13,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39