./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 5b36d44f 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 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 10:11:17,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 10:11:17,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 10:11:17,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 10:11:17,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 10:11:17,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 10:11:17,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 10:11:17,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 10:11:17,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 10:11:17,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 10:11:17,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 10:11:17,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 10:11:17,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 10:11:17,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 10:11:17,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 10:11:17,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 10:11:17,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 10:11:17,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 10:11:17,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 10:11:17,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 10:11:17,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 10:11:17,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 10:11:17,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 10:11:17,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 10:11:17,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 10:11:17,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 10:11:17,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 10:11:17,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 10:11:17,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 10:11:17,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 10:11:17,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 10:11:17,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 10:11:17,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 10:11:17,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 10:11:17,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 10:11:17,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 10:11:17,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 10:11:17,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 10:11:17,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 10:11:17,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 10:11:17,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 10:11:17,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 10:11:17,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 10:11:17,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 10:11:17,304 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 10:11:17,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 10:11:17,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 10:11:17,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 10:11:17,305 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 10:11:17,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 10:11:17,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 10:11:17,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 10:11:17,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 10:11:17,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 10:11:17,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 10:11:17,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 10:11:17,306 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 10:11:17,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 10:11:17,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 10:11:17,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 10:11:17,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 10:11:17,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:11:17,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 10:11:17,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 10:11:17,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 10:11:17,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 10:11:17,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 10:11:17,307 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 10:11:17,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 10:11:17,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 10:11:17,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 10:11:17,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 [2021-11-07 10:11:17,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 10:11:17,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 10:11:17,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 10:11:17,602 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 10:11:17,603 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 10:11:17,605 INFO L432 ainManager$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 [2021-11-07 10:11:17,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e18b2b3a/c5304765d10547c7971df488051c2c8f/FLAG9650218c7 [2021-11-07 10:11:18,301 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 10:11:18,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i [2021-11-07 10:11:18,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e18b2b3a/c5304765d10547c7971df488051c2c8f/FLAG9650218c7 [2021-11-07 10:11:18,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e18b2b3a/c5304765d10547c7971df488051c2c8f [2021-11-07 10:11:18,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 10:11:18,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 10:11:18,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 10:11:18,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 10:11:18,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 10:11:18,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:11:18" (1/1) ... [2021-11-07 10:11:18,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734c7be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:11:18, skipping insertion in model container [2021-11-07 10:11:18,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:11:18" (1/1) ... [2021-11-07 10:11:18,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 10:11:18,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 10:11:18,814 WARN L228 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] [2021-11-07 10:11:18,821 WARN L228 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] [2021-11-07 10:11:18,837 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 10:11:18,842 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 10:11:19,310 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 10:11:19,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,374 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,375 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,376 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,377 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,392 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,393 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,394 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,395 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,567 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 10:11:19,568 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 10:11:19,568 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 10:11:19,569 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 10:11:19,570 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 10:11:19,570 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 10:11:19,570 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 10:11:19,571 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 10:11:19,571 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 10:11:19,572 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 10:11:19,660 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,661 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:11:19,778 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 10:11:19,799 WARN L228 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] [2021-11-07 10:11:19,800 WARN L228 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] [2021-11-07 10:11:19,801 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 10:11:19,802 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 10:11:19,818 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 10:11:19,827 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,833 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,833 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,836 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,837 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,843 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,847 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,849 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,849 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 10:11:19,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 10:11:19,890 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 10:11:19,890 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 10:11:19,892 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 10:11:19,892 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 10:11:19,892 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 10:11:19,893 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 10:11:19,893 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 10:11:19,894 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 10:11:19,929 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:11:19,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:11:20,103 INFO L208 MainTranslator]: Completed translation [2021-11-07 10:11:20,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:11:20 WrapperNode [2021-11-07 10:11:20,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 10:11:20,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 10:11:20,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 10:11:20,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 10:11:20,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:11:20" (1/1) ... [2021-11-07 10:11:20,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:11:20" (1/1) ... [2021-11-07 10:11:20,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 10:11:20,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 10:11:20,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 10:11:20,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 10:11:20,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:11:20" (1/1) ... [2021-11-07 10:11:20,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:11:20" (1/1) ... [2021-11-07 10:11:20,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:11:20" (1/1) ... [2021-11-07 10:11:20,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:11:20" (1/1) ... [2021-11-07 10:11:20,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:11:20" (1/1) ... [2021-11-07 10:11:20,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:11:20" (1/1) ... [2021-11-07 10:11:20,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:11:20" (1/1) ... [2021-11-07 10:11:20,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 10:11:20,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 10:11:20,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 10:11:20,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 10:11:20,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:11:20" (1/1) ... [2021-11-07 10:11:20,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:11:20,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:20,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 10:11:20,464 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 [2021-11-07 10:11:20,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 10:11:20,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 10:11:20,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 10:11:20,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 10:11:20,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 10:11:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 10:11:20,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 10:11:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-07 10:11:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 10:11:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 10:11:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 10:11:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 10:11:29,461 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 10:11:29,462 INFO L299 CfgBuilder]: Removed 188 assume(true) statements. [2021-11-07 10:11:29,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:11:29 BoogieIcfgContainer [2021-11-07 10:11:29,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 10:11:29,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 10:11:29,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 10:11:29,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 10:11:29,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:11:18" (1/3) ... [2021-11-07 10:11:29,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717e3742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:11:29, skipping insertion in model container [2021-11-07 10:11:29,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:11:20" (2/3) ... [2021-11-07 10:11:29,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717e3742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:11:29, skipping insertion in model container [2021-11-07 10:11:29,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:11:29" (3/3) ... [2021-11-07 10:11:29,471 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_size_harness.i [2021-11-07 10:11:29,475 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 10:11:29,475 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-07 10:11:29,510 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 10:11:29,521 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 [2021-11-07 10:11:29,521 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-07 10:11:29,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 246 states, 231 states have (on average 1.4458874458874458) internal successors, (334), 245 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:29,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 10:11:29,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:29,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:29,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:11:29,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1385932008, now seen corresponding path program 1 times [2021-11-07 10:11:29,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:29,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316198347] [2021-11-07 10:11:29,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:29,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:30,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:30,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316198347] [2021-11-07 10:11:30,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316198347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:30,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:30,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 10:11:30,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436465186] [2021-11-07 10:11:30,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:30,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 10:11:30,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:30,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 10:11:30,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 10:11:30,221 INFO L87 Difference]: Start difference. First operand has 246 states, 231 states have (on average 1.4458874458874458) internal successors, (334), 245 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:30,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:30,275 INFO L93 Difference]: Finished difference Result 486 states and 661 transitions. [2021-11-07 10:11:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 10:11:30,282 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-07 10:11:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:30,296 INFO L225 Difference]: With dead ends: 486 [2021-11-07 10:11:30,296 INFO L226 Difference]: Without dead ends: 239 [2021-11-07 10:11:30,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 10:11:30,304 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:30,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 11.59ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 10:11:30,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-07 10:11:30,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-07 10:11:30,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 225 states have (on average 1.3244444444444445) internal successors, (298), 238 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 298 transitions. [2021-11-07 10:11:30,347 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 298 transitions. Word has length 40 [2021-11-07 10:11:30,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:30,347 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 298 transitions. [2021-11-07 10:11:30,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:30,348 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 298 transitions. [2021-11-07 10:11:30,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 10:11:30,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:30,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:30,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 10:11:30,350 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:11:30,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:30,351 INFO L85 PathProgramCache]: Analyzing trace with hash 577264856, now seen corresponding path program 1 times [2021-11-07 10:11:30,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:30,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108142995] [2021-11-07 10:11:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:30,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:30,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:30,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108142995] [2021-11-07 10:11:30,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108142995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:30,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:30,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:11:30,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380700708] [2021-11-07 10:11:30,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:30,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:11:30,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:30,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:11:30,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:11:30,715 INFO L87 Difference]: Start difference. First operand 239 states and 298 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:30,858 INFO L93 Difference]: Finished difference Result 398 states and 491 transitions. [2021-11-07 10:11:30,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:11:30,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-07 10:11:30,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:30,863 INFO L225 Difference]: With dead ends: 398 [2021-11-07 10:11:30,863 INFO L226 Difference]: Without dead ends: 239 [2021-11-07 10:11:30,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 105.32ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:11:30,865 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 531 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.57ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.61ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:30,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 323 Invalid, 16 Unknown, 0 Unchecked, 3.57ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 85.61ms Time] [2021-11-07 10:11:30,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-07 10:11:30,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-07 10:11:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 225 states have (on average 1.3155555555555556) internal successors, (296), 238 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 296 transitions. [2021-11-07 10:11:30,880 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 296 transitions. Word has length 40 [2021-11-07 10:11:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:30,881 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 296 transitions. [2021-11-07 10:11:30,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:30,884 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 296 transitions. [2021-11-07 10:11:30,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 10:11:30,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:30,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:30,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 10:11:30,890 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:11:30,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:30,890 INFO L85 PathProgramCache]: Analyzing trace with hash -252060921, now seen corresponding path program 1 times [2021-11-07 10:11:30,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:30,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693002130] [2021-11-07 10:11:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:30,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:31,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:31,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693002130] [2021-11-07 10:11:31,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693002130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:31,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:31,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:11:31,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105200689] [2021-11-07 10:11:31,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:31,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:11:31,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:31,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:11:31,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:11:31,212 INFO L87 Difference]: Start difference. First operand 239 states and 296 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:31,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:31,627 INFO L93 Difference]: Finished difference Result 509 states and 617 transitions. [2021-11-07 10:11:31,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:11:31,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 10:11:31,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:31,629 INFO L225 Difference]: With dead ends: 509 [2021-11-07 10:11:31,629 INFO L226 Difference]: Without dead ends: 318 [2021-11-07 10:11:31,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 136.24ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:11:31,631 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 694 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 262.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 298.32ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:31,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 523 Invalid, 69 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 298.32ms Time] [2021-11-07 10:11:31,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-07 10:11:31,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 239. [2021-11-07 10:11:31,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 225 states have (on average 1.3066666666666666) internal successors, (294), 238 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 294 transitions. [2021-11-07 10:11:31,642 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 294 transitions. Word has length 44 [2021-11-07 10:11:31,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:31,643 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 294 transitions. [2021-11-07 10:11:31,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:31,659 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 294 transitions. [2021-11-07 10:11:31,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 10:11:31,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:31,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:31,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 10:11:31,660 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:11:31,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:31,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1945926435, now seen corresponding path program 1 times [2021-11-07 10:11:31,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:31,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006951951] [2021-11-07 10:11:31,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:31,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:31,752 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:31,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494509126] [2021-11-07 10:11:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:31,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:31,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:31,756 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) [2021-11-07 10:11:31,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 10:11:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:32,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 2572 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 10:11:32,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:32,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:32,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:32,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:32,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006951951] [2021-11-07 10:11:32,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:32,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494509126] [2021-11-07 10:11:32,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494509126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:32,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:32,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:11:32,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177411156] [2021-11-07 10:11:32,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:32,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:11:32,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:32,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:11:32,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:11:32,931 INFO L87 Difference]: Start difference. First operand 239 states and 294 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:33,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:33,268 INFO L93 Difference]: Finished difference Result 399 states and 486 transitions. [2021-11-07 10:11:33,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 10:11:33,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-07 10:11:33,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:33,272 INFO L225 Difference]: With dead ends: 399 [2021-11-07 10:11:33,272 INFO L226 Difference]: Without dead ends: 239 [2021-11-07 10:11:33,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 210.21ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:11:33,273 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 1031 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 177.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 197.34ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:33,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 344 Invalid, 55 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 197.34ms Time] [2021-11-07 10:11:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-07 10:11:33,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-07 10:11:33,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 225 states have (on average 1.2977777777777777) internal successors, (292), 238 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:33,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 292 transitions. [2021-11-07 10:11:33,288 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 292 transitions. Word has length 52 [2021-11-07 10:11:33,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:33,289 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 292 transitions. [2021-11-07 10:11:33,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:33,289 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 292 transitions. [2021-11-07 10:11:33,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 10:11:33,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:33,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:33,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 10:11:33,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:33,509 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:11:33,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash -909602284, now seen corresponding path program 1 times [2021-11-07 10:11:33,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:33,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166498473] [2021-11-07 10:11:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:33,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:33,610 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:33,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775620157] [2021-11-07 10:11:33,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:33,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:33,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:33,612 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) [2021-11-07 10:11:33,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 10:11:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:34,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2622 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 10:11:34,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:34,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:34,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:34,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166498473] [2021-11-07 10:11:34,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:34,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775620157] [2021-11-07 10:11:34,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775620157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:34,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:34,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 10:11:34,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034603369] [2021-11-07 10:11:34,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:34,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:11:34,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:34,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:11:34,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:11:34,861 INFO L87 Difference]: Start difference. First operand 239 states and 292 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:35,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:35,576 INFO L93 Difference]: Finished difference Result 415 states and 506 transitions. [2021-11-07 10:11:35,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 10:11:35,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 10:11:35,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:35,578 INFO L225 Difference]: With dead ends: 415 [2021-11-07 10:11:35,578 INFO L226 Difference]: Without dead ends: 239 [2021-11-07 10:11:35,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 372.55ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-07 10:11:35,579 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 1213 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 377.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.87ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 445.56ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:35,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 382 Invalid, 114 Unknown, 0 Unchecked, 3.87ms Time], IncrementalHoareTripleChecker [21 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 445.56ms Time] [2021-11-07 10:11:35,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-07 10:11:35,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-07 10:11:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 225 states have (on average 1.288888888888889) internal successors, (290), 238 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 290 transitions. [2021-11-07 10:11:35,586 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 290 transitions. Word has length 64 [2021-11-07 10:11:35,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:35,586 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 290 transitions. [2021-11-07 10:11:35,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:35,587 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 290 transitions. [2021-11-07 10:11:35,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 10:11:35,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:35,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:35,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 10:11:35,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:35,803 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:11:35,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:35,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1743581048, now seen corresponding path program 1 times [2021-11-07 10:11:35,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:35,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451809273] [2021-11-07 10:11:35,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:35,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:35,882 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:35,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999072438] [2021-11-07 10:11:35,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:35,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:35,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:35,884 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) [2021-11-07 10:11:35,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 10:11:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:36,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 10:11:36,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:37,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:37,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:37,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451809273] [2021-11-07 10:11:37,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:37,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999072438] [2021-11-07 10:11:37,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999072438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:37,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:37,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:11:37,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870498363] [2021-11-07 10:11:37,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:37,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:11:37,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:37,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:11:37,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:11:37,383 INFO L87 Difference]: Start difference. First operand 239 states and 290 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:37,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:37,793 INFO L93 Difference]: Finished difference Result 368 states and 441 transitions. [2021-11-07 10:11:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:11:37,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 10:11:37,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:37,795 INFO L225 Difference]: With dead ends: 368 [2021-11-07 10:11:37,795 INFO L226 Difference]: Without dead ends: 239 [2021-11-07 10:11:37,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 136.28ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:11:37,796 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 439 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 291.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 319.11ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:37,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 584 Invalid, 67 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 319.11ms Time] [2021-11-07 10:11:37,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-07 10:11:37,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-07 10:11:37,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 225 states have (on average 1.28) internal successors, (288), 238 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 288 transitions. [2021-11-07 10:11:37,805 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 288 transitions. Word has length 72 [2021-11-07 10:11:37,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:37,805 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 288 transitions. [2021-11-07 10:11:37,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 288 transitions. [2021-11-07 10:11:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 10:11:37,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:37,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:37,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 10:11:38,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:38,027 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:11:38,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:38,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1843556290, now seen corresponding path program 1 times [2021-11-07 10:11:38,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:38,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759546813] [2021-11-07 10:11:38,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:38,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:38,123 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:38,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310309939] [2021-11-07 10:11:38,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:38,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:38,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:38,140 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) [2021-11-07 10:11:38,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 10:11:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:38,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:11:38,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:39,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:39,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:39,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759546813] [2021-11-07 10:11:39,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:39,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310309939] [2021-11-07 10:11:39,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310309939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:39,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:39,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:11:39,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460120545] [2021-11-07 10:11:39,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:39,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:11:39,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:39,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:11:39,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:11:39,058 INFO L87 Difference]: Start difference. First operand 239 states and 288 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:39,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:39,469 INFO L93 Difference]: Finished difference Result 461 states and 561 transitions. [2021-11-07 10:11:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:11:39,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-07 10:11:39,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:39,476 INFO L225 Difference]: With dead ends: 461 [2021-11-07 10:11:39,476 INFO L226 Difference]: Without dead ends: 269 [2021-11-07 10:11:39,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:11:39,477 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 45 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 324.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.36ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 363.36ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:39,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 799 Invalid, 110 Unknown, 0 Unchecked, 3.36ms Time], IncrementalHoareTripleChecker [21 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 363.36ms Time] [2021-11-07 10:11:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-07 10:11:39,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 251. [2021-11-07 10:11:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 237 states have (on average 1.2658227848101267) internal successors, (300), 250 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 300 transitions. [2021-11-07 10:11:39,492 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 300 transitions. Word has length 88 [2021-11-07 10:11:39,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:39,493 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 300 transitions. [2021-11-07 10:11:39,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:39,494 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 300 transitions. [2021-11-07 10:11:39,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 10:11:39,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:39,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:39,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-07 10:11:39,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:39,713 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:11:39,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:39,714 INFO L85 PathProgramCache]: Analyzing trace with hash 68548928, now seen corresponding path program 1 times [2021-11-07 10:11:39,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:39,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765223521] [2021-11-07 10:11:39,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:39,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:39,866 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:39,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334810181] [2021-11-07 10:11:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:39,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:39,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:39,868 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) [2021-11-07 10:11:39,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 10:11:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:40,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 2907 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 10:11:40,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:41,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:41,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:41,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765223521] [2021-11-07 10:11:41,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:41,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334810181] [2021-11-07 10:11:41,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334810181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:41,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:41,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:11:41,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154941112] [2021-11-07 10:11:41,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:41,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:11:41,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:41,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:11:41,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:11:41,011 INFO L87 Difference]: Start difference. First operand 251 states and 300 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:41,237 INFO L93 Difference]: Finished difference Result 580 states and 684 transitions. [2021-11-07 10:11:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 10:11:41,237 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-07 10:11:41,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:41,239 INFO L225 Difference]: With dead ends: 580 [2021-11-07 10:11:41,239 INFO L226 Difference]: Without dead ends: 411 [2021-11-07 10:11:41,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.64ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:11:41,240 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 192 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 160.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.72ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 173.49ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:41,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 1578 Invalid, 49 Unknown, 0 Unchecked, 2.72ms Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 173.49ms Time] [2021-11-07 10:11:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-11-07 10:11:41,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 263. [2021-11-07 10:11:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 249 states have (on average 1.2690763052208835) internal successors, (316), 262 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 316 transitions. [2021-11-07 10:11:41,249 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 316 transitions. Word has length 88 [2021-11-07 10:11:41,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:41,249 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 316 transitions. [2021-11-07 10:11:41,249 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:41,250 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 316 transitions. [2021-11-07 10:11:41,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 10:11:41,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:41,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:41,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 10:11:41,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:41,473 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:11:41,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:41,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2117936770, now seen corresponding path program 1 times [2021-11-07 10:11:41,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:41,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694065088] [2021-11-07 10:11:41,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:41,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:41,563 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:41,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316644538] [2021-11-07 10:11:41,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:41,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:41,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:41,567 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) [2021-11-07 10:11:41,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 10:11:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:42,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 10:11:42,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:43,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:43,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:43,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694065088] [2021-11-07 10:11:43,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:43,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316644538] [2021-11-07 10:11:43,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316644538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:43,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:43,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 10:11:43,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364693426] [2021-11-07 10:11:43,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:43,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:11:43,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:43,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:11:43,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:11:43,180 INFO L87 Difference]: Start difference. First operand 263 states and 316 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:45,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:11:47,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:11:49,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:11:52,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:52,039 INFO L93 Difference]: Finished difference Result 621 states and 741 transitions. [2021-11-07 10:11:52,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 10:11:52,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-07 10:11:52,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:52,042 INFO L225 Difference]: With dead ends: 621 [2021-11-07 10:11:52,042 INFO L226 Difference]: Without dead ends: 437 [2021-11-07 10:11:52,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 540.14ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:11:52,043 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 183 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7879.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.18ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8483.33ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:52,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1319 Invalid, 434 Unknown, 0 Unchecked, 10.18ms Time], IncrementalHoareTripleChecker [11 Valid, 420 Invalid, 3 Unknown, 0 Unchecked, 8483.33ms Time] [2021-11-07 10:11:52,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-07 10:11:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 271. [2021-11-07 10:11:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 257 states have (on average 1.2684824902723735) internal successors, (326), 270 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 326 transitions. [2021-11-07 10:11:52,052 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 326 transitions. Word has length 88 [2021-11-07 10:11:52,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:52,053 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 326 transitions. [2021-11-07 10:11:52,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:52,053 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 326 transitions. [2021-11-07 10:11:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 10:11:52,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:52,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:52,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-07 10:11:52,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:52,272 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:11:52,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:52,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1928884032, now seen corresponding path program 1 times [2021-11-07 10:11:52,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:52,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990375046] [2021-11-07 10:11:52,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:52,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:52,378 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:52,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520580418] [2021-11-07 10:11:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:52,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:52,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:52,380 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) [2021-11-07 10:11:52,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 10:11:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:53,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 2909 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:11:53,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:53,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:53,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:53,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990375046] [2021-11-07 10:11:53,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:53,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520580418] [2021-11-07 10:11:53,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520580418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:53,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:53,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:11:53,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491474742] [2021-11-07 10:11:53,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:53,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:11:53,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:53,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:11:53,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:11:53,528 INFO L87 Difference]: Start difference. First operand 271 states and 326 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:11:53,679 INFO L93 Difference]: Finished difference Result 475 states and 568 transitions. [2021-11-07 10:11:53,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:11:53,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-07 10:11:53,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:11:53,681 INFO L225 Difference]: With dead ends: 475 [2021-11-07 10:11:53,681 INFO L226 Difference]: Without dead ends: 287 [2021-11-07 10:11:53,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:11:53,682 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 5 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.34ms IncrementalHoareTripleChecker+Time [2021-11-07 10:11:53,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 839 Invalid, 34 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 114.34ms Time] [2021-11-07 10:11:53,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-07 10:11:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 279. [2021-11-07 10:11:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 265 states have (on average 1.260377358490566) internal successors, (334), 278 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:53,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 334 transitions. [2021-11-07 10:11:53,715 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 334 transitions. Word has length 88 [2021-11-07 10:11:53,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:11:53,715 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 334 transitions. [2021-11-07 10:11:53,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:11:53,715 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 334 transitions. [2021-11-07 10:11:53,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 10:11:53,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:11:53,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:11:53,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 10:11:53,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:53,917 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:11:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:11:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash 994275966, now seen corresponding path program 1 times [2021-11-07 10:11:53,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:11:53,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999198081] [2021-11-07 10:11:53,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:53,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:11:54,009 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:11:54,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169391051] [2021-11-07 10:11:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:11:54,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:11:54,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:11:54,012 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) [2021-11-07 10:11:54,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 10:11:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:11:55,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-07 10:11:55,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:11:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:11:58,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:11:58,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:11:58,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999198081] [2021-11-07 10:11:58,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:11:58,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169391051] [2021-11-07 10:11:58,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169391051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:11:58,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:11:58,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 10:11:58,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214432403] [2021-11-07 10:11:58,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:11:58,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 10:11:58,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:11:58,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 10:11:58,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-07 10:11:58,118 INFO L87 Difference]: Start difference. First operand 279 states and 334 transitions. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:12:06,457 INFO L93 Difference]: Finished difference Result 685 states and 814 transitions. [2021-11-07 10:12:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 10:12:06,458 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-07 10:12:06,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:12:06,460 INFO L225 Difference]: With dead ends: 685 [2021-11-07 10:12:06,460 INFO L226 Difference]: Without dead ends: 502 [2021-11-07 10:12:06,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 5008.35ms TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 10:12:06,462 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 1660 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4085.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.46ms SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4403.14ms IncrementalHoareTripleChecker+Time [2021-11-07 10:12:06,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1660 Valid, 2472 Invalid, 1250 Unknown, 0 Unchecked, 22.46ms Time], IncrementalHoareTripleChecker [143 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 4403.14ms Time] [2021-11-07 10:12:06,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-11-07 10:12:06,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 393. [2021-11-07 10:12:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 379 states have (on average 1.2585751978891822) internal successors, (477), 392 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 477 transitions. [2021-11-07 10:12:06,476 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 477 transitions. Word has length 88 [2021-11-07 10:12:06,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:12:06,476 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 477 transitions. [2021-11-07 10:12:06,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 477 transitions. [2021-11-07 10:12:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 10:12:06,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:12:06,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:12:06,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 10:12:06,703 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,SelfDestructingSolverStorable10 [2021-11-07 10:12:06,703 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:12:06,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:12:06,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1623498204, now seen corresponding path program 1 times [2021-11-07 10:12:06,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:12:06,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369997556] [2021-11-07 10:12:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:12:06,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:12:06,769 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:12:06,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230793238] [2021-11-07 10:12:06,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:12:06,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:12:06,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:12:06,771 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) [2021-11-07 10:12:06,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 10:12:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:12:08,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 2909 conjuncts, 135 conjunts are in the unsatisfiable core [2021-11-07 10:12:08,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:12:08,637 INFO L388 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 [2021-11-07 10:12:09,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:09,697 INFO L388 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 [2021-11-07 10:12:09,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:09,739 INFO L388 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 [2021-11-07 10:12:09,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:09,851 INFO L388 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 21 treesize of output 20 [2021-11-07 10:12:09,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:09,883 INFO L388 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 21 treesize of output 20 [2021-11-07 10:12:10,354 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 10:12:10,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2021-11-07 10:12:10,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:10,702 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-07 10:12:10,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 58 [2021-11-07 10:12:10,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:10,800 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-07 10:12:10,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 43 [2021-11-07 10:12:12,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:12,094 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-07 10:12:12,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-07 10:12:12,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:12,159 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-07 10:12:12,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 47 [2021-11-07 10:12:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:12:12,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:12:12,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:12:12,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369997556] [2021-11-07 10:12:12,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:12:12,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230793238] [2021-11-07 10:12:12,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230793238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:12:12,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:12:12,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 10:12:12,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024803610] [2021-11-07 10:12:12,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:12:12,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 10:12:12,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:12:12,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 10:12:12,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-07 10:12:12,858 INFO L87 Difference]: Start difference. First operand 393 states and 477 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:14,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:17,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:19,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:21,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:23,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:25,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:34,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:12:34,224 INFO L93 Difference]: Finished difference Result 1181 states and 1432 transitions. [2021-11-07 10:12:34,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 10:12:34,225 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-07 10:12:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:12:34,230 INFO L225 Difference]: With dead ends: 1181 [2021-11-07 10:12:34,230 INFO L226 Difference]: Without dead ends: 957 [2021-11-07 10:12:34,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 4072.76ms TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 10:12:34,233 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 1077 mSDsluCounter, 3479 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 59 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17426.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 3973 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.03ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18605.86ms IncrementalHoareTripleChecker+Time [2021-11-07 10:12:34,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 3973 Invalid, 1458 Unknown, 0 Unchecked, 24.03ms Time], IncrementalHoareTripleChecker [59 Valid, 1393 Invalid, 6 Unknown, 0 Unchecked, 18605.86ms Time] [2021-11-07 10:12:34,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-11-07 10:12:34,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 633. [2021-11-07 10:12:34,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 619 states have (on average 1.2552504038772214) internal successors, (777), 632 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:34,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 777 transitions. [2021-11-07 10:12:34,264 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 777 transitions. Word has length 90 [2021-11-07 10:12:34,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:12:34,264 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 777 transitions. [2021-11-07 10:12:34,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:34,264 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 777 transitions. [2021-11-07 10:12:34,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 10:12:34,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:12:34,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:12:34,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 10:12:34,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:12:34,480 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:12:34,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:12:34,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1179597530, now seen corresponding path program 1 times [2021-11-07 10:12:34,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:12:34,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561835913] [2021-11-07 10:12:34,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:12:34,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:12:34,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:12:34,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776291579] [2021-11-07 10:12:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:12:34,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:12:34,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:12:34,539 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) [2021-11-07 10:12:34,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 10:12:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:12:35,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 10:12:35,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:12:35,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:12:35,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:12:35,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:12:35,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561835913] [2021-11-07 10:12:35,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:12:35,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776291579] [2021-11-07 10:12:35,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776291579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:12:35,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:12:35,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:12:35,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702081] [2021-11-07 10:12:35,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:12:35,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:12:35,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:12:35,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:12:35,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:12:35,763 INFO L87 Difference]: Start difference. First operand 633 states and 777 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:37,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:39,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:41,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:12:41,922 INFO L93 Difference]: Finished difference Result 1444 states and 1765 transitions. [2021-11-07 10:12:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 10:12:41,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-07 10:12:41,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:12:41,927 INFO L225 Difference]: With dead ends: 1444 [2021-11-07 10:12:41,927 INFO L226 Difference]: Without dead ends: 875 [2021-11-07 10:12:41,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 323.74ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:12:41,929 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 175 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 38 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5476.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.09ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5887.88ms IncrementalHoareTripleChecker+Time [2021-11-07 10:12:41,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1187 Invalid, 403 Unknown, 0 Unchecked, 5.09ms Time], IncrementalHoareTripleChecker [38 Valid, 363 Invalid, 2 Unknown, 0 Unchecked, 5887.88ms Time] [2021-11-07 10:12:41,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-07 10:12:41,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 649. [2021-11-07 10:12:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 635 states have (on average 1.2456692913385827) internal successors, (791), 648 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 791 transitions. [2021-11-07 10:12:41,958 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 791 transitions. Word has length 90 [2021-11-07 10:12:41,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:12:41,958 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 791 transitions. [2021-11-07 10:12:41,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:41,958 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 791 transitions. [2021-11-07 10:12:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 10:12:41,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:12:41,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:12:42,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 10:12:42,175 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,SelfDestructingSolverStorable12 [2021-11-07 10:12:42,176 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:12:42,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:12:42,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1660677788, now seen corresponding path program 1 times [2021-11-07 10:12:42,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:12:42,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662188400] [2021-11-07 10:12:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:12:42,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:12:42,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:12:42,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11260541] [2021-11-07 10:12:42,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:12:42,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:12:42,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:12:42,236 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) [2021-11-07 10:12:42,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 10:12:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:12:43,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 2909 conjuncts, 139 conjunts are in the unsatisfiable core [2021-11-07 10:12:43,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:12:43,889 INFO L388 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 [2021-11-07 10:12:45,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:45,047 INFO L388 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 [2021-11-07 10:12:45,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:45,097 INFO L388 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 [2021-11-07 10:12:45,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:45,220 INFO L388 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 21 treesize of output 20 [2021-11-07 10:12:45,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:45,250 INFO L388 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 21 treesize of output 20 [2021-11-07 10:12:45,752 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-07 10:12:45,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 33 [2021-11-07 10:12:46,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:46,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-11-07 10:12:46,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:46,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2021-11-07 10:12:47,082 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-07 10:12:47,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 33 [2021-11-07 10:12:48,010 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-07 10:12:48,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 25 treesize of output 29 [2021-11-07 10:12:48,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:48,512 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 10:12:48,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 58 [2021-11-07 10:12:48,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:12:48,558 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 10:12:48,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 43 [2021-11-07 10:12:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:12:50,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:12:50,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:12:50,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662188400] [2021-11-07 10:12:50,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:12:50,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11260541] [2021-11-07 10:12:50,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11260541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:12:50,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:12:50,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 10:12:50,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537483545] [2021-11-07 10:12:50,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:12:50,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 10:12:50,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:12:50,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 10:12:50,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-07 10:12:50,541 INFO L87 Difference]: Start difference. First operand 649 states and 791 transitions. Second operand has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:12:52,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:54,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:56,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:12:59,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:13:01,187 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:13:06,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:13:06,158 INFO L93 Difference]: Finished difference Result 1356 states and 1650 transitions. [2021-11-07 10:13:06,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 10:13:06,159 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-07 10:13:06,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:13:06,162 INFO L225 Difference]: With dead ends: 1356 [2021-11-07 10:13:06,162 INFO L226 Difference]: Without dead ends: 1078 [2021-11-07 10:13:06,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 4264.65ms TimeCoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2021-11-07 10:13:06,166 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 338 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 25 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12552.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 2260 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.67ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 13466.95ms IncrementalHoareTripleChecker+Time [2021-11-07 10:13:06,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 2260 Invalid, 728 Unknown, 0 Unchecked, 12.67ms Time], IncrementalHoareTripleChecker [25 Valid, 643 Invalid, 5 Unknown, 55 Unchecked, 13466.95ms Time] [2021-11-07 10:13:06,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-11-07 10:13:06,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 690. [2021-11-07 10:13:06,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 676 states have (on average 1.2440828402366864) internal successors, (841), 689 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:13:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 841 transitions. [2021-11-07 10:13:06,194 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 841 transitions. Word has length 90 [2021-11-07 10:13:06,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:13:06,195 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 841 transitions. [2021-11-07 10:13:06,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:13:06,195 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 841 transitions. [2021-11-07 10:13:06,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 10:13:06,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:13:06,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:13:06,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 10:13:06,423 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,SelfDestructingSolverStorable13 [2021-11-07 10:13:06,424 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:13:06,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:13:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash 913664384, now seen corresponding path program 1 times [2021-11-07 10:13:06,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:13:06,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032668097] [2021-11-07 10:13:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:13:06,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:13:06,495 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:13:06,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828087023] [2021-11-07 10:13:06,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:13:06,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:13:06,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:13:06,496 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) [2021-11-07 10:13:06,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 10:16:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:16:50,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-07 10:16:50,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:16:50,897 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 10:16:50,897 INFO L388 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 73 treesize of output 55 [2021-11-07 10:16:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:16:51,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:16:51,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:16:51,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032668097] [2021-11-07 10:16:51,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:16:51,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828087023] [2021-11-07 10:16:51,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828087023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:16:51,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:16:51,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 10:16:51,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864322217] [2021-11-07 10:16:51,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:16:51,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:16:51,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:16:51,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:16:51,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:16:51,630 INFO L87 Difference]: Start difference. First operand 690 states and 841 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:16:52,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:16:52,488 INFO L93 Difference]: Finished difference Result 1593 states and 1926 transitions. [2021-11-07 10:16:52,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 10:16:52,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-07 10:16:52,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:16:52,493 INFO L225 Difference]: With dead ends: 1593 [2021-11-07 10:16:52,493 INFO L226 Difference]: Without dead ends: 1148 [2021-11-07 10:16:52,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 527.63ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-07 10:16:52,495 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 792 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 360.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.31ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 405.89ms IncrementalHoareTripleChecker+Time [2021-11-07 10:16:52,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 1020 Invalid, 102 Unknown, 0 Unchecked, 3.31ms Time], IncrementalHoareTripleChecker [29 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 405.89ms Time] [2021-11-07 10:16:52,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2021-11-07 10:16:52,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 695. [2021-11-07 10:16:52,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 681 states have (on average 1.2422907488986785) internal successors, (846), 694 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:16:52,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 846 transitions. [2021-11-07 10:16:52,526 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 846 transitions. Word has length 91 [2021-11-07 10:16:52,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:16:52,527 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 846 transitions. [2021-11-07 10:16:52,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:16:52,527 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 846 transitions. [2021-11-07 10:16:52,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 10:16:52,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:16:52,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:16:52,743 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forcibly destroying the process [2021-11-07 10:16:52,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 137 [2021-11-07 10:16:52,805 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,SelfDestructingSolverStorable14 [2021-11-07 10:16:52,805 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:16:52,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:16:52,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1666608842, now seen corresponding path program 1 times [2021-11-07 10:16:52,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:16:52,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943196013] [2021-11-07 10:16:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:16:52,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:16:52,886 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:16:52,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114037797] [2021-11-07 10:16:52,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:16:52,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:16:52,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:16:52,888 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) [2021-11-07 10:16:52,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 10:16:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:16:53,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-07 10:16:53,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:16:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:16:54,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:16:54,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:16:54,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943196013] [2021-11-07 10:16:54,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:16:54,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114037797] [2021-11-07 10:16:54,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114037797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:16:54,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:16:54,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 10:16:54,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183896050] [2021-11-07 10:16:54,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:16:54,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:16:54,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:16:54,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:16:54,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:16:54,073 INFO L87 Difference]: Start difference. First operand 695 states and 846 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:16:54,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:16:54,613 INFO L93 Difference]: Finished difference Result 1200 states and 1440 transitions. [2021-11-07 10:16:54,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 10:16:54,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-07 10:16:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:16:54,616 INFO L225 Difference]: With dead ends: 1200 [2021-11-07 10:16:54,616 INFO L226 Difference]: Without dead ends: 758 [2021-11-07 10:16:54,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 312.46ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-07 10:16:54,617 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 205 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 316.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.21ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 336.56ms IncrementalHoareTripleChecker+Time [2021-11-07 10:16:54,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1831 Invalid, 84 Unknown, 0 Unchecked, 2.21ms Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 336.56ms Time] [2021-11-07 10:16:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-11-07 10:16:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 695. [2021-11-07 10:16:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 681 states have (on average 1.236417033773862) internal successors, (842), 694 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:16:54,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 842 transitions. [2021-11-07 10:16:54,645 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 842 transitions. Word has length 91 [2021-11-07 10:16:54,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:16:54,646 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 842 transitions. [2021-11-07 10:16:54,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:16:54,646 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 842 transitions. [2021-11-07 10:16:54,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 10:16:54,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:16:54,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:16:54,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 10:16:54,868 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,SelfDestructingSolverStorable15 [2021-11-07 10:16:54,869 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:16:54,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:16:54,869 INFO L85 PathProgramCache]: Analyzing trace with hash -93450368, now seen corresponding path program 1 times [2021-11-07 10:16:54,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:16:54,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59111357] [2021-11-07 10:16:54,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:16:54,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:16:54,952 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:16:54,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248577100] [2021-11-07 10:16:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:16:54,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:16:54,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:16:54,956 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) [2021-11-07 10:16:54,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 10:16:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:16:55,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 2919 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 10:16:55,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:16:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:16:56,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:16:56,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:16:56,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59111357] [2021-11-07 10:16:56,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:16:56,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248577100] [2021-11-07 10:16:56,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248577100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:16:56,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:16:56,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:16:56,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166786910] [2021-11-07 10:16:56,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:16:56,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:16:56,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:16:56,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:16:56,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:16:56,319 INFO L87 Difference]: Start difference. First operand 695 states and 842 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:16:58,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:00,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:02,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:17:02,495 INFO L93 Difference]: Finished difference Result 1521 states and 1822 transitions. [2021-11-07 10:17:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:17:02,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 10:17:02,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:17:02,498 INFO L225 Difference]: With dead ends: 1521 [2021-11-07 10:17:02,498 INFO L226 Difference]: Without dead ends: 933 [2021-11-07 10:17:02,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 175.39ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:17:02,500 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 210 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 20 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5520.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.94ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6061.55ms IncrementalHoareTripleChecker+Time [2021-11-07 10:17:02,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 841 Invalid, 405 Unknown, 0 Unchecked, 4.94ms Time], IncrementalHoareTripleChecker [20 Valid, 383 Invalid, 2 Unknown, 0 Unchecked, 6061.55ms Time] [2021-11-07 10:17:02,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-11-07 10:17:02,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 695. [2021-11-07 10:17:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 681 states have (on average 1.2129221732745963) internal successors, (826), 694 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:17:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 826 transitions. [2021-11-07 10:17:02,527 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 826 transitions. Word has length 92 [2021-11-07 10:17:02,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:17:02,527 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 826 transitions. [2021-11-07 10:17:02,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:17:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 826 transitions. [2021-11-07 10:17:02,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 10:17:02,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:17:02,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:17:02,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 10:17:02,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:17:02,747 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:17:02,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:17:02,748 INFO L85 PathProgramCache]: Analyzing trace with hash -825417794, now seen corresponding path program 1 times [2021-11-07 10:17:02,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:17:02,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520442780] [2021-11-07 10:17:02,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:17:02,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:17:02,835 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:17:02,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355890795] [2021-11-07 10:17:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:17:02,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:17:02,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:17:02,837 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:17:02,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 10:17:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:17:03,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 2914 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-07 10:17:03,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:17:03,741 INFO L388 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 [2021-11-07 10:17:04,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:17:04,478 INFO L388 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 31 treesize of output 15 [2021-11-07 10:17:05,106 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 10:17:05,106 INFO L388 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 32 treesize of output 20 [2021-11-07 10:17:05,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:17:05,167 INFO L388 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 27 treesize of output 15 [2021-11-07 10:17:05,479 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 10:17:05,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2021-11-07 10:17:05,669 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-07 10:17:05,669 INFO L388 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 27 treesize of output 26 [2021-11-07 10:17:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:17:08,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:17:08,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:17:08,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520442780] [2021-11-07 10:17:08,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:17:08,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355890795] [2021-11-07 10:17:08,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355890795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:17:08,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:17:08,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 10:17:08,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334826470] [2021-11-07 10:17:08,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:17:08,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 10:17:08,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:17:08,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 10:17:08,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2021-11-07 10:17:08,502 INFO L87 Difference]: Start difference. First operand 695 states and 826 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:17:10,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:12,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:14,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:17,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:19,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:21,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:25,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:17:25,337 INFO L93 Difference]: Finished difference Result 1362 states and 1618 transitions. [2021-11-07 10:17:25,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 10:17:25,338 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 10:17:25,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:17:25,341 INFO L225 Difference]: With dead ends: 1362 [2021-11-07 10:17:25,341 INFO L226 Difference]: Without dead ends: 768 [2021-11-07 10:17:25,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 4061.58ms TimeCoverageRelationStatistics Valid=94, Invalid=247, Unknown=1, NotChecked=0, Total=342 [2021-11-07 10:17:25,342 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 169 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 50 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14427.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.37ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 15765.05ms IncrementalHoareTripleChecker+Time [2021-11-07 10:17:25,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1885 Invalid, 793 Unknown, 0 Unchecked, 10.37ms Time], IncrementalHoareTripleChecker [50 Valid, 613 Invalid, 6 Unknown, 124 Unchecked, 15765.05ms Time] [2021-11-07 10:17:25,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-11-07 10:17:25,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 738. [2021-11-07 10:17:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 724 states have (on average 1.2099447513812154) internal successors, (876), 737 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:17:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 876 transitions. [2021-11-07 10:17:25,423 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 876 transitions. Word has length 92 [2021-11-07 10:17:25,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:17:25,423 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 876 transitions. [2021-11-07 10:17:25,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:17:25,423 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 876 transitions. [2021-11-07 10:17:25,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 10:17:25,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:17:25,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:17:25,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 10:17:25,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 10:17:25,645 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:17:25,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:17:25,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1825168090, now seen corresponding path program 1 times [2021-11-07 10:17:25,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:17:25,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142859739] [2021-11-07 10:17:25,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:17:25,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:17:25,715 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:17:25,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807778035] [2021-11-07 10:17:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:17:25,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:17:25,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:17:25,717 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:17:25,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 10:17:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:17:27,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 2926 conjuncts, 137 conjunts are in the unsatisfiable core [2021-11-07 10:17:27,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:17:27,364 INFO L388 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 [2021-11-07 10:17:28,386 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 10:17:28,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-07 10:17:28,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:17:28,610 INFO L388 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 32 treesize of output 16 [2021-11-07 10:17:28,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:17:28,896 INFO L388 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 32 treesize of output 16 [2021-11-07 10:17:29,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:17:29,068 INFO L388 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 28 treesize of output 16 [2021-11-07 10:17:29,509 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-07 10:17:29,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-07 10:17:29,762 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 10:17:29,762 INFO L388 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 30 treesize of output 29 [2021-11-07 10:17:33,480 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 10:17:33,481 INFO L388 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 29 treesize of output 28 [2021-11-07 10:17:35,805 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 10:17:35,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 31 [2021-11-07 10:17:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:17:36,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:17:36,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:17:36,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142859739] [2021-11-07 10:17:36,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:17:36,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807778035] [2021-11-07 10:17:36,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807778035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:17:36,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:17:36,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-07 10:17:36,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788333714] [2021-11-07 10:17:36,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:17:36,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 10:17:36,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:17:36,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 10:17:36,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=317, Unknown=1, NotChecked=0, Total=380 [2021-11-07 10:17:36,090 INFO L87 Difference]: Start difference. First operand 738 states and 876 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:17:38,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:40,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:42,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:44,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:46,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:49,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:17:56,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:17:56,691 INFO L93 Difference]: Finished difference Result 1520 states and 1788 transitions. [2021-11-07 10:17:56,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 10:17:56,692 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-07 10:17:56,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:17:56,697 INFO L225 Difference]: With dead ends: 1520 [2021-11-07 10:17:56,697 INFO L226 Difference]: Without dead ends: 1339 [2021-11-07 10:17:56,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6781.82ms TimeCoverageRelationStatistics Valid=146, Invalid=665, Unknown=1, NotChecked=0, Total=812 [2021-11-07 10:17:56,699 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1724 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 131 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17058.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.90ms SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 18719.10ms IncrementalHoareTripleChecker+Time [2021-11-07 10:17:56,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1724 Valid, 3039 Invalid, 1431 Unknown, 0 Unchecked, 20.90ms Time], IncrementalHoareTripleChecker [131 Valid, 1155 Invalid, 6 Unknown, 139 Unchecked, 18719.10ms Time] [2021-11-07 10:17:56,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2021-11-07 10:17:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 828. [2021-11-07 10:17:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 814 states have (on average 1.21007371007371) internal successors, (985), 827 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:17:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 985 transitions. [2021-11-07 10:17:56,749 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 985 transitions. Word has length 93 [2021-11-07 10:17:56,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:17:56,749 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 985 transitions. [2021-11-07 10:17:56,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:17:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 985 transitions. [2021-11-07 10:17:56,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 10:17:56,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:17:56,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:17:56,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-07 10:17:56,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:17:56,967 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:17:56,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:17:56,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1960326116, now seen corresponding path program 1 times [2021-11-07 10:17:56,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:17:56,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372050313] [2021-11-07 10:17:56,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:17:56,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:17:57,029 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:17:57,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108025178] [2021-11-07 10:17:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:17:57,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:17:57,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:17:57,030 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:17:57,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 10:17:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:17:57,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 163 conjunts are in the unsatisfiable core [2021-11-07 10:17:57,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:17:59,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:17:59,270 INFO L388 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 25 treesize of output 13 [2021-11-07 10:18:08,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:08,204 INFO L388 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 48 treesize of output 36 [2021-11-07 10:18:08,216 INFO L388 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 33 treesize of output 21 [2021-11-07 10:18:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:08,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:18:08,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:18:08,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372050313] [2021-11-07 10:18:08,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:18:08,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108025178] [2021-11-07 10:18:08,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108025178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:08,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:08,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-07 10:18:08,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797206309] [2021-11-07 10:18:08,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:08,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 10:18:08,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:18:08,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 10:18:08,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=384, Unknown=3, NotChecked=0, Total=462 [2021-11-07 10:18:08,797 INFO L87 Difference]: Start difference. First operand 828 states and 985 transitions. Second operand has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 22 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:10,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:18:13,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:18:15,290 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:18:17,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:18:19,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:18:33,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:33,730 INFO L93 Difference]: Finished difference Result 2467 states and 2903 transitions. [2021-11-07 10:18:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-07 10:18:33,731 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 22 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-07 10:18:33,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:33,739 INFO L225 Difference]: With dead ends: 2467 [2021-11-07 10:18:33,739 INFO L226 Difference]: Without dead ends: 2147 [2021-11-07 10:18:33,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 14424.05ms TimeCoverageRelationStatistics Valid=841, Invalid=3446, Unknown=3, NotChecked=0, Total=4290 [2021-11-07 10:18:33,742 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 2261 mSDsluCounter, 3708 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 165 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17457.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2261 SdHoareTripleChecker+Valid, 4080 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.32ms SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19173.52ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:33,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2261 Valid, 4080 Invalid, 2088 Unknown, 0 Unchecked, 30.32ms Time], IncrementalHoareTripleChecker [165 Valid, 1918 Invalid, 5 Unknown, 0 Unchecked, 19173.52ms Time] [2021-11-07 10:18:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2021-11-07 10:18:33,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 1194. [2021-11-07 10:18:33,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1180 states have (on average 1.2084745762711864) internal successors, (1426), 1193 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:33,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1426 transitions. [2021-11-07 10:18:33,829 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1426 transitions. Word has length 93 [2021-11-07 10:18:33,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:33,829 INFO L470 AbstractCegarLoop]: Abstraction has 1194 states and 1426 transitions. [2021-11-07 10:18:33,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 22 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:33,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1426 transitions. [2021-11-07 10:18:33,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 10:18:33,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:33,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:33,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 10:18:34,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:18:34,056 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:18:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1226765416, now seen corresponding path program 1 times [2021-11-07 10:18:34,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:18:34,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408022374] [2021-11-07 10:18:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:34,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:18:34,127 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:18:34,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420395420] [2021-11-07 10:18:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:34,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:18:34,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:18:34,133 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:18:34,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 10:18:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:34,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:18:34,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:18:35,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:35,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:18:35,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:18:35,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408022374] [2021-11-07 10:18:35,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 10:18:35,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420395420] [2021-11-07 10:18:35,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420395420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:35,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:35,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:18:35,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63277012] [2021-11-07 10:18:35,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:35,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:18:35,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:18:35,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:18:35,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:18:35,189 INFO L87 Difference]: Start difference. First operand 1194 states and 1426 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:35,436 INFO L93 Difference]: Finished difference Result 1957 states and 2322 transitions. [2021-11-07 10:18:35,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:18:35,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-07 10:18:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:35,440 INFO L225 Difference]: With dead ends: 1957 [2021-11-07 10:18:35,441 INFO L226 Difference]: Without dead ends: 1179 [2021-11-07 10:18:35,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.18ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:18:35,442 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 4 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.98ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.57ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:35,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 838 Invalid, 37 Unknown, 0 Unchecked, 0.98ms Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 146.57ms Time] [2021-11-07 10:18:35,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-11-07 10:18:35,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1158. [2021-11-07 10:18:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1144 states have (on average 1.1914335664335665) internal successors, (1363), 1157 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1363 transitions. [2021-11-07 10:18:35,496 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1363 transitions. Word has length 93 [2021-11-07 10:18:35,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:35,496 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1363 transitions. [2021-11-07 10:18:35,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1363 transitions. [2021-11-07 10:18:35,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 10:18:35,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:35,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:35,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 10:18:35,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:18:35,722 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 10:18:35,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1327296740, now seen corresponding path program 1 times [2021-11-07 10:18:35,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:18:35,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448418285] [2021-11-07 10:18:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:35,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:18:35,779 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 10:18:35,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051310159] [2021-11-07 10:18:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:35,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:18:35,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:18:35,780 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:18:35,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process Killed by 15