./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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_push_ref_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 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 13:35:26,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 13:35:26,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 13:35:26,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 13:35:26,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 13:35:26,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 13:35:26,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 13:35:26,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 13:35:26,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 13:35:26,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 13:35:26,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 13:35:26,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 13:35:26,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 13:35:26,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 13:35:26,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 13:35:26,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 13:35:26,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 13:35:26,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 13:35:26,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 13:35:26,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 13:35:26,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 13:35:26,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 13:35:26,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 13:35:26,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 13:35:26,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 13:35:26,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 13:35:26,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 13:35:26,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 13:35:26,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 13:35:26,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 13:35:26,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 13:35:26,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 13:35:26,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 13:35:26,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 13:35:26,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 13:35:26,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 13:35:26,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 13:35:26,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 13:35:26,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 13:35:26,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 13:35:26,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 13:35:26,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 13:35:26,411 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 13:35:26,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 13:35:26,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 13:35:26,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 13:35:26,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 13:35:26,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 13:35:26,414 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 13:35:26,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 13:35:26,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 13:35:26,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 13:35:26,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 13:35:26,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 13:35:26,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 13:35:26,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 13:35:26,416 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 13:35:26,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 13:35:26,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 13:35:26,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 13:35:26,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 13:35:26,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:35:26,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 13:35:26,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 13:35:26,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 13:35:26,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 13:35:26,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 13:35:26,417 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 13:35:26,417 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 13:35:26,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 13:35:26,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 13:35:26,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 [2021-11-05 13:35:26,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 13:35:26,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 13:35:26,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 13:35:26,733 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 13:35:26,734 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 13:35:26,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2021-11-05 13:35:26,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d8044598/5f93174bebb7446487882547cf43838c/FLAG59978d636 [2021-11-05 13:35:27,416 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 13:35:27,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2021-11-05 13:35:27,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d8044598/5f93174bebb7446487882547cf43838c/FLAG59978d636 [2021-11-05 13:35:27,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d8044598/5f93174bebb7446487882547cf43838c [2021-11-05 13:35:27,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 13:35:27,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 13:35:27,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 13:35:27,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 13:35:27,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 13:35:27,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:35:27" (1/1) ... [2021-11-05 13:35:27,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5228bcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:35:27, skipping insertion in model container [2021-11-05 13:35:27,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:35:27" (1/1) ... [2021-11-05 13:35:27,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 13:35:27,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 13:35:27,922 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_push_ref_harness.i[4501,4514] [2021-11-05 13:35:27,927 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_push_ref_harness.i[4561,4574] [2021-11-05 13:35:27,944 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:35:27,949 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:35:28,807 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:28,808 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:28,809 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:28,810 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:28,811 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:28,824 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:28,825 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:28,827 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:28,828 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:28,830 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:28,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:28,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:28,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:35:29,087 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:35:29,088 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:35:29,089 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:35:29,089 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:35:29,090 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:35:29,090 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:35:29,091 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:35:29,091 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:35:29,093 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:35:29,175 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:35:29,198 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,207 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,259 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,259 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,260 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,260 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,270 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,272 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,274 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,281 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,282 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,282 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:35:29,316 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 13:35:29,332 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_push_ref_harness.i[4501,4514] [2021-11-05 13:35:29,333 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_push_ref_harness.i[4561,4574] [2021-11-05 13:35:29,335 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:35:29,337 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:35:29,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,366 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,366 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,366 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,368 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,393 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,397 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,397 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,397 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,398 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,398 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,398 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,399 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,415 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:35:29,417 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:35:29,418 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:35:29,418 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:35:29,419 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:35:29,419 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:35:29,419 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:35:29,419 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:35:29,420 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:35:29,420 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:35:29,440 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:35:29,453 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,456 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,472 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,476 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,476 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,476 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,477 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,477 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,477 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,478 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,478 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,480 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,480 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,483 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:35:29,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:35:29,639 INFO L208 MainTranslator]: Completed translation [2021-11-05 13:35:29,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:35:29 WrapperNode [2021-11-05 13:35:29,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 13:35:29,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 13:35:29,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 13:35:29,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 13:35:29,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:35:29" (1/1) ... [2021-11-05 13:35:29,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:35:29" (1/1) ... [2021-11-05 13:35:29,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 13:35:29,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 13:35:29,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 13:35:29,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 13:35:29,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:35:29" (1/1) ... [2021-11-05 13:35:29,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:35:29" (1/1) ... [2021-11-05 13:35:30,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:35:29" (1/1) ... [2021-11-05 13:35:30,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:35:29" (1/1) ... [2021-11-05 13:35:30,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:35:29" (1/1) ... [2021-11-05 13:35:30,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:35:29" (1/1) ... [2021-11-05 13:35:30,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:35:29" (1/1) ... [2021-11-05 13:35:30,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 13:35:30,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 13:35:30,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 13:35:30,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 13:35:30,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:35:29" (1/1) ... [2021-11-05 13:35:30,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:35:30,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:35:30,504 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) [2021-11-05 13:35:30,526 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 [2021-11-05 13:35:30,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 13:35:30,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 13:35:30,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 13:35:30,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 13:35:30,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 13:35:30,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 13:35:30,540 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-05 13:35:30,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 13:35:30,541 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 13:35:30,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 13:35:30,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 13:35:30,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 13:35:30,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:35:45,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:35:45,526 INFO L299 CfgBuilder]: Removed 1883 assume(true) statements. [2021-11-05 13:35:45,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:35:45 BoogieIcfgContainer [2021-11-05 13:35:45,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:35:45,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:35:45,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:35:45,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:35:45,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:35:27" (1/3) ... [2021-11-05 13:35:45,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596466d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:35:45, skipping insertion in model container [2021-11-05 13:35:45,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:35:29" (2/3) ... [2021-11-05 13:35:45,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596466d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:35:45, skipping insertion in model container [2021-11-05 13:35:45,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:35:45" (3/3) ... [2021-11-05 13:35:45,535 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_ref_harness.i [2021-11-05 13:35:45,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:35:45,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 63 error locations. [2021-11-05 13:35:45,581 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:35:45,597 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 [2021-11-05 13:35:45,599 INFO L340 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2021-11-05 13:35:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 2319 states, 2255 states have (on average 1.4124168514412416) internal successors, (3185), 2318 states have internal predecessors, (3185), 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) [2021-11-05 13:35:45,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 13:35:45,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:35:45,649 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] [2021-11-05 13:35:45,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:35:45,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:35:45,655 INFO L85 PathProgramCache]: Analyzing trace with hash -966206977, now seen corresponding path program 1 times [2021-11-05 13:35:45,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:35:45,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618989341] [2021-11-05 13:35:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:35:45,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:35:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:35:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:35:46,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:35:46,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618989341] [2021-11-05 13:35:46,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618989341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:35:46,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:35:46,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:35:46,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579601784] [2021-11-05 13:35:46,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:35:46,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:35:46,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:35:46,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:35:46,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:35:46,269 INFO L87 Difference]: Start difference. First operand has 2319 states, 2255 states have (on average 1.4124168514412416) internal successors, (3185), 2318 states have internal predecessors, (3185), 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 32.0) internal successors, (64), 2 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) [2021-11-05 13:35:46,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:35:46,369 INFO L93 Difference]: Finished difference Result 4632 states and 6363 transitions. [2021-11-05 13:35:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:35:46,372 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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 [2021-11-05 13:35:46,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:35:46,391 INFO L225 Difference]: With dead ends: 4632 [2021-11-05 13:35:46,392 INFO L226 Difference]: Without dead ends: 2314 [2021-11-05 13:35:46,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:35:46,403 INFO L933 BasicCegarLoop]: 2988 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, 2988 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:35:46,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2988 Invalid, 0 Unknown, 0 Unchecked, 7.95ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:35:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2021-11-05 13:35:46,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2314. [2021-11-05 13:35:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2251 states have (on average 1.3251888049755665) internal successors, (2983), 2313 states have internal predecessors, (2983), 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) [2021-11-05 13:35:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 2983 transitions. [2021-11-05 13:35:46,502 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 2983 transitions. Word has length 64 [2021-11-05 13:35:46,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:35:46,502 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 2983 transitions. [2021-11-05 13:35:46,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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) [2021-11-05 13:35:46,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 2983 transitions. [2021-11-05 13:35:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 13:35:46,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:35:46,509 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] [2021-11-05 13:35:46,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:35:46,510 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:35:46,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:35:46,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1823598091, now seen corresponding path program 1 times [2021-11-05 13:35:46,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:35:46,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712023183] [2021-11-05 13:35:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:35:46,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:35:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:35:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:35:46,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:35:46,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712023183] [2021-11-05 13:35:46,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712023183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:35:46,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:35:46,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:35:46,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983616051] [2021-11-05 13:35:46,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:35:46,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:35:46,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:35:46,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:35:46,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:35:46,838 INFO L87 Difference]: Start difference. First operand 2314 states and 2983 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-11-05 13:35:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:35:47,122 INFO L93 Difference]: Finished difference Result 4548 states and 5861 transitions. [2021-11-05 13:35:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:35:47,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 [2021-11-05 13:35:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:35:47,130 INFO L225 Difference]: With dead ends: 4548 [2021-11-05 13:35:47,130 INFO L226 Difference]: Without dead ends: 2314 [2021-11-05 13:35:47,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.85ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:35:47,135 INFO L933 BasicCegarLoop]: 2968 mSDtfsCounter, 4657 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.69ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 157.77ms IncrementalHoareTripleChecker+Time [2021-11-05 13:35:47,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4657 Valid, 4220 Invalid, 46 Unknown, 0 Unchecked, 17.69ms Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 157.77ms Time] [2021-11-05 13:35:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2021-11-05 13:35:47,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2314. [2021-11-05 13:35:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2251 states have (on average 1.3238560639715682) internal successors, (2980), 2313 states have internal predecessors, (2980), 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) [2021-11-05 13:35:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 2980 transitions. [2021-11-05 13:35:47,180 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 2980 transitions. Word has length 64 [2021-11-05 13:35:47,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:35:47,182 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 2980 transitions. [2021-11-05 13:35:47,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-11-05 13:35:47,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 2980 transitions. [2021-11-05 13:35:47,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-05 13:35:47,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:35:47,184 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] [2021-11-05 13:35:47,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 13:35:47,184 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:35:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:35:47,185 INFO L85 PathProgramCache]: Analyzing trace with hash 998964115, now seen corresponding path program 1 times [2021-11-05 13:35:47,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:35:47,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753062250] [2021-11-05 13:35:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:35:47,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:35:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:35:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:35:47,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:35:47,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753062250] [2021-11-05 13:35:47,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753062250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:35:47,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:35:47,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:35:47,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491782907] [2021-11-05 13:35:47,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:35:47,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:35:47,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:35:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:35:47,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:35:47,485 INFO L87 Difference]: Start difference. First operand 2314 states and 2980 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) [2021-11-05 13:35:50,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:35:50,300 INFO L93 Difference]: Finished difference Result 5247 states and 6724 transitions. [2021-11-05 13:35:50,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:35:50,301 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 [2021-11-05 13:35:50,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:35:50,312 INFO L225 Difference]: With dead ends: 5247 [2021-11-05 13:35:50,313 INFO L226 Difference]: Without dead ends: 2981 [2021-11-05 13:35:50,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 100.56ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:35:50,323 INFO L933 BasicCegarLoop]: 2947 mSDtfsCounter, 6285 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2266.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6285 SdHoareTripleChecker+Valid, 6377 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.91ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2530.02ms IncrementalHoareTripleChecker+Time [2021-11-05 13:35:50,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6285 Valid, 6377 Invalid, 811 Unknown, 0 Unchecked, 29.91ms Time], IncrementalHoareTripleChecker [20 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 2530.02ms Time] [2021-11-05 13:35:50,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2021-11-05 13:35:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2314. [2021-11-05 13:35:50,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2251 states have (on average 1.32252332296757) internal successors, (2977), 2313 states have internal predecessors, (2977), 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) [2021-11-05 13:35:50,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 2977 transitions. [2021-11-05 13:35:50,383 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 2977 transitions. Word has length 72 [2021-11-05 13:35:50,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:35:50,384 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 2977 transitions. [2021-11-05 13:35:50,384 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) [2021-11-05 13:35:50,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 2977 transitions. [2021-11-05 13:35:50,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 13:35:50,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:35:50,386 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] [2021-11-05 13:35:50,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 13:35:50,387 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:35:50,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:35:50,388 INFO L85 PathProgramCache]: Analyzing trace with hash -984193973, now seen corresponding path program 1 times [2021-11-05 13:35:50,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:35:50,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221786482] [2021-11-05 13:35:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:35:50,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:35:50,477 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:35:50,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20816627] [2021-11-05 13:35:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:35:50,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:35:50,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:35:50,479 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) [2021-11-05 13:35:50,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:35:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:35:51,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 2740 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 13:35:51,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:35:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:35:51,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:35:51,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:35:51,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221786482] [2021-11-05 13:35:51,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:35:51,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20816627] [2021-11-05 13:35:51,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20816627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:35:51,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:35:51,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:35:51,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34023976] [2021-11-05 13:35:51,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:35:51,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:35:51,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:35:51,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:35:51,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:35:51,785 INFO L87 Difference]: Start difference. First operand 2314 states and 2977 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) 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) [2021-11-05 13:35:52,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:35:52,921 INFO L93 Difference]: Finished difference Result 5255 states and 6739 transitions. [2021-11-05 13:35:52,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:35:52,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) 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 [2021-11-05 13:35:52,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:35:52,930 INFO L225 Difference]: With dead ends: 5255 [2021-11-05 13:35:52,930 INFO L226 Difference]: Without dead ends: 3020 [2021-11-05 13:35:52,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 136.96ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:35:52,934 INFO L933 BasicCegarLoop]: 2829 mSDtfsCounter, 11991 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 827.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11991 SdHoareTripleChecker+Valid, 5183 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.62ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 919.61ms IncrementalHoareTripleChecker+Time [2021-11-05 13:35:52,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11991 Valid, 5183 Invalid, 344 Unknown, 0 Unchecked, 16.62ms Time], IncrementalHoareTripleChecker [17 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 919.61ms Time] [2021-11-05 13:35:52,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2021-11-05 13:35:52,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 2314. [2021-11-05 13:35:52,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2251 states have (on average 1.3211905819635716) internal successors, (2974), 2313 states have internal predecessors, (2974), 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) [2021-11-05 13:35:52,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 2974 transitions. [2021-11-05 13:35:52,985 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 2974 transitions. Word has length 88 [2021-11-05 13:35:52,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:35:52,985 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 2974 transitions. [2021-11-05 13:35:52,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) 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) [2021-11-05 13:35:52,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 2974 transitions. [2021-11-05 13:35:52,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-05 13:35:52,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:35:52,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:35:53,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 13:35:53,200 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 [2021-11-05 13:35:53,201 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:35:53,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:35:53,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1935115155, now seen corresponding path program 1 times [2021-11-05 13:35:53,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:35:53,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466284227] [2021-11-05 13:35:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:35:53,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:35:53,279 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:35:53,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082261543] [2021-11-05 13:35:53,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:35:53,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:35:53,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:35:53,281 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) [2021-11-05 13:35:53,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 13:35:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:35:54,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 13:35:54,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:35:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:35:54,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:35:54,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:35:54,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466284227] [2021-11-05 13:35:54,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:35:54,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082261543] [2021-11-05 13:35:54,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082261543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:35:54,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:35:54,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:35:54,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378957854] [2021-11-05 13:35:54,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:35:54,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:35:54,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:35:54,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:35:54,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:35:54,410 INFO L87 Difference]: Start difference. First operand 2314 states and 2974 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-11-05 13:35:54,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:35:54,813 INFO L93 Difference]: Finished difference Result 4597 states and 5908 transitions. [2021-11-05 13:35:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:35:54,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 112 [2021-11-05 13:35:54,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:35:54,821 INFO L225 Difference]: With dead ends: 4597 [2021-11-05 13:35:54,821 INFO L226 Difference]: Without dead ends: 2354 [2021-11-05 13:35:54,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.69ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:35:54,839 INFO L933 BasicCegarLoop]: 2965 mSDtfsCounter, 22 mSDsluCounter, 5838 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 295.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 8803 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.34ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 323.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:35:54,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 8803 Invalid, 191 Unknown, 0 Unchecked, 6.34ms Time], IncrementalHoareTripleChecker [37 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 323.00ms Time] [2021-11-05 13:35:54,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2021-11-05 13:35:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2334. [2021-11-05 13:35:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2271 states have (on average 1.3183619550858652) internal successors, (2994), 2333 states have internal predecessors, (2994), 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) [2021-11-05 13:35:54,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 2994 transitions. [2021-11-05 13:35:54,890 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 2994 transitions. Word has length 112 [2021-11-05 13:35:54,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:35:54,890 INFO L470 AbstractCegarLoop]: Abstraction has 2334 states and 2994 transitions. [2021-11-05 13:35:54,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-11-05 13:35:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 2994 transitions. [2021-11-05 13:35:54,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-05 13:35:54,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:35:54,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:35:54,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-05 13:35:55,106 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 [2021-11-05 13:35:55,107 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:35:55,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:35:55,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1660355541, now seen corresponding path program 1 times [2021-11-05 13:35:55,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:35:55,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246710849] [2021-11-05 13:35:55,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:35:55,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:35:55,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:35:55,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846639161] [2021-11-05 13:35:55,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:35:55,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:35:55,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:35:55,184 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) [2021-11-05 13:35:55,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 13:35:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:35:55,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 13:35:55,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:35:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:35:56,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:35:56,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:35:56,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246710849] [2021-11-05 13:35:56,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:35:56,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846639161] [2021-11-05 13:35:56,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846639161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:35:56,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:35:56,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:35:56,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163045237] [2021-11-05 13:35:56,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:35:56,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:35:56,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:35:56,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:35:56,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:35:56,437 INFO L87 Difference]: Start difference. First operand 2334 states and 2994 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 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) [2021-11-05 13:35:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:35:59,899 INFO L93 Difference]: Finished difference Result 5311 states and 6797 transitions. [2021-11-05 13:35:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 13:35:59,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 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 112 [2021-11-05 13:35:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:35:59,909 INFO L225 Difference]: With dead ends: 5311 [2021-11-05 13:35:59,909 INFO L226 Difference]: Without dead ends: 3040 [2021-11-05 13:35:59,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 211.24ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:35:59,913 INFO L933 BasicCegarLoop]: 2796 mSDtfsCounter, 12189 mSDsluCounter, 4392 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2774.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12189 SdHoareTripleChecker+Valid, 7188 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.40ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3109.49ms IncrementalHoareTripleChecker+Time [2021-11-05 13:35:59,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12189 Valid, 7188 Invalid, 1115 Unknown, 0 Unchecked, 26.40ms Time], IncrementalHoareTripleChecker [42 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 3109.49ms Time] [2021-11-05 13:35:59,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-11-05 13:35:59,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 2334. [2021-11-05 13:35:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2271 states have (on average 1.3170409511228534) internal successors, (2991), 2333 states have internal predecessors, (2991), 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) [2021-11-05 13:35:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 2991 transitions. [2021-11-05 13:35:59,973 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 2991 transitions. Word has length 112 [2021-11-05 13:35:59,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:35:59,974 INFO L470 AbstractCegarLoop]: Abstraction has 2334 states and 2991 transitions. [2021-11-05 13:35:59,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 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) [2021-11-05 13:35:59,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 2991 transitions. [2021-11-05 13:35:59,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-05 13:35:59,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:35:59,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:35:59,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 13:36:00,191 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 [2021-11-05 13:36:00,192 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:36:00,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:36:00,192 INFO L85 PathProgramCache]: Analyzing trace with hash 485350515, now seen corresponding path program 1 times [2021-11-05 13:36:00,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:36:00,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438687211] [2021-11-05 13:36:00,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:00,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:36:00,272 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:36:00,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117493598] [2021-11-05 13:36:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:00,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:36:00,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:36:00,274 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) [2021-11-05 13:36:00,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 13:36:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:36:01,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 13:36:01,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:36:01,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:36:01,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:36:01,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:36:01,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438687211] [2021-11-05 13:36:01,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:36:01,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117493598] [2021-11-05 13:36:01,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117493598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:36:01,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:36:01,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:36:01,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577179082] [2021-11-05 13:36:01,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:36:01,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:36:01,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:36:01,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:36:01,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:36:01,540 INFO L87 Difference]: Start difference. First operand 2334 states and 2991 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 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) [2021-11-05 13:36:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:36:04,294 INFO L93 Difference]: Finished difference Result 4497 states and 5766 transitions. [2021-11-05 13:36:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:36:04,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 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 128 [2021-11-05 13:36:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:36:04,301 INFO L225 Difference]: With dead ends: 4497 [2021-11-05 13:36:04,302 INFO L226 Difference]: Without dead ends: 2334 [2021-11-05 13:36:04,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 97.19ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:36:04,306 INFO L933 BasicCegarLoop]: 2820 mSDtfsCounter, 8749 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2284.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8749 SdHoareTripleChecker+Valid, 5081 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.35ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2550.82ms IncrementalHoareTripleChecker+Time [2021-11-05 13:36:04,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8749 Valid, 5081 Invalid, 904 Unknown, 0 Unchecked, 17.35ms Time], IncrementalHoareTripleChecker [4 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 2550.82ms Time] [2021-11-05 13:36:04,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2021-11-05 13:36:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2334. [2021-11-05 13:36:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2271 states have (on average 1.3157199471598415) internal successors, (2988), 2333 states have internal predecessors, (2988), 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) [2021-11-05 13:36:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 2988 transitions. [2021-11-05 13:36:04,375 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 2988 transitions. Word has length 128 [2021-11-05 13:36:04,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:36:04,376 INFO L470 AbstractCegarLoop]: Abstraction has 2334 states and 2988 transitions. [2021-11-05 13:36:04,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 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) [2021-11-05 13:36:04,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 2988 transitions. [2021-11-05 13:36:04,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-05 13:36:04,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:36:04,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:36:04,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 13:36:04,604 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 [2021-11-05 13:36:04,604 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:36:04,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:36:04,605 INFO L85 PathProgramCache]: Analyzing trace with hash -451771305, now seen corresponding path program 1 times [2021-11-05 13:36:04,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:36:04,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076549715] [2021-11-05 13:36:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:04,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:36:04,680 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:36:04,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510790737] [2021-11-05 13:36:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:04,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:36:04,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:36:04,683 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) [2021-11-05 13:36:04,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 13:36:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:36:05,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 3122 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-05 13:36:05,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:36:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:36:06,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:36:06,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:36:06,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076549715] [2021-11-05 13:36:06,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:36:06,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510790737] [2021-11-05 13:36:06,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510790737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:36:06,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:36:06,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:36:06,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762377030] [2021-11-05 13:36:06,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:36:06,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:36:06,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:36:06,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:36:06,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:36:06,017 INFO L87 Difference]: Start difference. First operand 2334 states and 2988 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 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) [2021-11-05 13:36:08,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:36:08,541 INFO L93 Difference]: Finished difference Result 4831 states and 6197 transitions. [2021-11-05 13:36:08,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:36:08,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 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 136 [2021-11-05 13:36:08,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:36:08,549 INFO L225 Difference]: With dead ends: 4831 [2021-11-05 13:36:08,549 INFO L226 Difference]: Without dead ends: 2692 [2021-11-05 13:36:08,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 142.31ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:36:08,552 INFO L933 BasicCegarLoop]: 2851 mSDtfsCounter, 11739 mSDsluCounter, 4086 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2030.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11739 SdHoareTripleChecker+Valid, 6937 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.40ms SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2265.49ms IncrementalHoareTripleChecker+Time [2021-11-05 13:36:08,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11739 Valid, 6937 Invalid, 917 Unknown, 0 Unchecked, 20.40ms Time], IncrementalHoareTripleChecker [79 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 2265.49ms Time] [2021-11-05 13:36:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2021-11-05 13:36:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2334. [2021-11-05 13:36:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2271 states have (on average 1.3117569352708058) internal successors, (2979), 2333 states have internal predecessors, (2979), 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) [2021-11-05 13:36:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 2979 transitions. [2021-11-05 13:36:08,611 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 2979 transitions. Word has length 136 [2021-11-05 13:36:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:36:08,611 INFO L470 AbstractCegarLoop]: Abstraction has 2334 states and 2979 transitions. [2021-11-05 13:36:08,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 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) [2021-11-05 13:36:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 2979 transitions. [2021-11-05 13:36:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-05 13:36:08,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:36:08,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:36:08,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 13:36:08,828 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 [2021-11-05 13:36:08,829 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:36:08,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:36:08,829 INFO L85 PathProgramCache]: Analyzing trace with hash 957929247, now seen corresponding path program 1 times [2021-11-05 13:36:08,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:36:08,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982124128] [2021-11-05 13:36:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:08,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:36:08,908 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:36:08,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355275251] [2021-11-05 13:36:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:08,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:36:08,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:36:08,910 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) [2021-11-05 13:36:08,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 13:36:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:36:09,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 3312 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-05 13:36:09,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:36:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:36:10,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:36:10,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:36:10,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982124128] [2021-11-05 13:36:10,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:36:10,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355275251] [2021-11-05 13:36:10,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355275251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:36:10,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:36:10,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:36:10,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273468278] [2021-11-05 13:36:10,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:36:10,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:36:10,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:36:10,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:36:10,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:36:10,235 INFO L87 Difference]: Start difference. First operand 2334 states and 2979 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2021-11-05 13:36:10,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:36:10,753 INFO L93 Difference]: Finished difference Result 11262 states and 14389 transitions. [2021-11-05 13:36:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 13:36:10,753 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2021-11-05 13:36:10,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:36:10,793 INFO L225 Difference]: With dead ends: 11262 [2021-11-05 13:36:10,793 INFO L226 Difference]: Without dead ends: 9028 [2021-11-05 13:36:10,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 181.92ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:36:10,800 INFO L933 BasicCegarLoop]: 2946 mSDtfsCounter, 11299 mSDsluCounter, 11765 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 172.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11299 SdHoareTripleChecker+Valid, 14711 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.74ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 188.37ms IncrementalHoareTripleChecker+Time [2021-11-05 13:36:10,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11299 Valid, 14711 Invalid, 105 Unknown, 0 Unchecked, 15.74ms Time], IncrementalHoareTripleChecker [24 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 188.37ms Time] [2021-11-05 13:36:10,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9028 states. [2021-11-05 13:36:10,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9028 to 2344. [2021-11-05 13:36:10,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2281 states have (on average 1.310828583954406) internal successors, (2990), 2343 states have internal predecessors, (2990), 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) [2021-11-05 13:36:10,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 2990 transitions. [2021-11-05 13:36:10,906 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 2990 transitions. Word has length 152 [2021-11-05 13:36:10,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:36:10,907 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 2990 transitions. [2021-11-05 13:36:10,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2021-11-05 13:36:10,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 2990 transitions. [2021-11-05 13:36:10,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-05 13:36:10,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:36:10,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:36:10,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 13:36:11,125 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 [2021-11-05 13:36:11,126 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:36:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:36:11,126 INFO L85 PathProgramCache]: Analyzing trace with hash -36764451, now seen corresponding path program 1 times [2021-11-05 13:36:11,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:36:11,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194231364] [2021-11-05 13:36:11,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:11,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:36:11,183 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:36:11,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105741044] [2021-11-05 13:36:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:11,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:36:11,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:36:11,185 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) [2021-11-05 13:36:11,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 13:36:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:36:11,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 3309 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-05 13:36:12,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:36:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:36:12,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:36:12,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:36:12,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194231364] [2021-11-05 13:36:12,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:36:12,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105741044] [2021-11-05 13:36:12,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105741044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:36:12,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:36:12,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:36:12,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266758705] [2021-11-05 13:36:12,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:36:12,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:36:12,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:36:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:36:12,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:36:12,691 INFO L87 Difference]: Start difference. First operand 2344 states and 2990 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2021-11-05 13:36:12,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:36:12,997 INFO L93 Difference]: Finished difference Result 6760 states and 8632 transitions. [2021-11-05 13:36:12,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:36:12,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2021-11-05 13:36:12,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:36:13,006 INFO L225 Difference]: With dead ends: 6760 [2021-11-05 13:36:13,006 INFO L226 Difference]: Without dead ends: 4581 [2021-11-05 13:36:13,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 167.46ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:36:13,018 INFO L933 BasicCegarLoop]: 2951 mSDtfsCounter, 5639 mSDsluCounter, 11804 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5639 SdHoareTripleChecker+Valid, 14755 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.36ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.97ms IncrementalHoareTripleChecker+Time [2021-11-05 13:36:13,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5639 Valid, 14755 Invalid, 44 Unknown, 0 Unchecked, 11.36ms Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 77.97ms Time] [2021-11-05 13:36:13,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4581 states. [2021-11-05 13:36:13,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4581 to 2399. [2021-11-05 13:36:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2336 states have (on average 1.3099315068493151) internal successors, (3060), 2398 states have internal predecessors, (3060), 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) [2021-11-05 13:36:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3060 transitions. [2021-11-05 13:36:13,107 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3060 transitions. Word has length 152 [2021-11-05 13:36:13,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:36:13,107 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3060 transitions. [2021-11-05 13:36:13,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2021-11-05 13:36:13,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3060 transitions. [2021-11-05 13:36:13,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-05 13:36:13,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:36:13,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:36:13,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 13:36:13,323 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 [2021-11-05 13:36:13,324 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:36:13,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:36:13,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1902397595, now seen corresponding path program 1 times [2021-11-05 13:36:13,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:36:13,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706078777] [2021-11-05 13:36:13,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:13,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:36:13,382 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:36:13,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528198395] [2021-11-05 13:36:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:13,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:36:13,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:36:13,383 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) [2021-11-05 13:36:13,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 13:36:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:36:14,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 3306 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-05 13:36:14,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:36:14,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:36:14,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:36:14,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:36:14,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706078777] [2021-11-05 13:36:14,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:36:14,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528198395] [2021-11-05 13:36:14,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528198395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:36:14,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:36:14,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:36:14,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161169668] [2021-11-05 13:36:14,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:36:14,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:36:14,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:36:14,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:36:14,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:36:14,661 INFO L87 Difference]: Start difference. First operand 2399 states and 3060 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2021-11-05 13:36:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:36:14,988 INFO L93 Difference]: Finished difference Result 6740 states and 8606 transitions. [2021-11-05 13:36:14,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:36:14,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2021-11-05 13:36:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:36:14,996 INFO L225 Difference]: With dead ends: 6740 [2021-11-05 13:36:14,996 INFO L226 Difference]: Without dead ends: 4581 [2021-11-05 13:36:14,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 171.92ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:36:15,000 INFO L933 BasicCegarLoop]: 2951 mSDtfsCounter, 5527 mSDsluCounter, 11806 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5527 SdHoareTripleChecker+Valid, 14757 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.35ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.65ms IncrementalHoareTripleChecker+Time [2021-11-05 13:36:15,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5527 Valid, 14757 Invalid, 40 Unknown, 0 Unchecked, 11.35ms Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 64.65ms Time] [2021-11-05 13:36:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4581 states. [2021-11-05 13:36:15,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4581 to 2419. [2021-11-05 13:36:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2419 states, 2356 states have (on average 1.3089983022071308) internal successors, (3084), 2418 states have internal predecessors, (3084), 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) [2021-11-05 13:36:15,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 3084 transitions. [2021-11-05 13:36:15,093 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 3084 transitions. Word has length 152 [2021-11-05 13:36:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:36:15,093 INFO L470 AbstractCegarLoop]: Abstraction has 2419 states and 3084 transitions. [2021-11-05 13:36:15,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2021-11-05 13:36:15,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 3084 transitions. [2021-11-05 13:36:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-05 13:36:15,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:36:15,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:36:15,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-05 13:36:15,319 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 [2021-11-05 13:36:15,320 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:36:15,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:36:15,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2117810087, now seen corresponding path program 1 times [2021-11-05 13:36:15,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:36:15,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657105775] [2021-11-05 13:36:15,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:15,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:36:15,400 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:36:15,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433599328] [2021-11-05 13:36:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:15,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:36:15,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:36:15,402 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) [2021-11-05 13:36:15,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 13:36:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:36:16,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 3303 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-05 13:36:16,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:36:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:36:16,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:36:16,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:36:16,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657105775] [2021-11-05 13:36:16,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:36:16,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433599328] [2021-11-05 13:36:16,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433599328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:36:16,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:36:16,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:36:16,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559842549] [2021-11-05 13:36:16,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:36:16,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:36:16,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:36:16,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:36:16,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:36:16,486 INFO L87 Difference]: Start difference. First operand 2419 states and 3084 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-11-05 13:36:17,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:36:17,013 INFO L93 Difference]: Finished difference Result 4598 states and 5867 transitions. [2021-11-05 13:36:17,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:36:17,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2021-11-05 13:36:17,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:36:17,018 INFO L225 Difference]: With dead ends: 4598 [2021-11-05 13:36:17,018 INFO L226 Difference]: Without dead ends: 2354 [2021-11-05 13:36:17,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.23ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:36:17,022 INFO L933 BasicCegarLoop]: 2958 mSDtfsCounter, 1 mSDsluCounter, 5686 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 366.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8644 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 423.22ms IncrementalHoareTripleChecker+Time [2021-11-05 13:36:17,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 8644 Invalid, 232 Unknown, 0 Unchecked, 4.65ms Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 423.22ms Time] [2021-11-05 13:36:17,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2021-11-05 13:36:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2354. [2021-11-05 13:36:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2354 states, 2291 states have (on average 1.3099083369707551) internal successors, (3001), 2353 states have internal predecessors, (3001), 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) [2021-11-05 13:36:17,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3001 transitions. [2021-11-05 13:36:17,103 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3001 transitions. Word has length 152 [2021-11-05 13:36:17,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:36:17,104 INFO L470 AbstractCegarLoop]: Abstraction has 2354 states and 3001 transitions. [2021-11-05 13:36:17,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-11-05 13:36:17,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3001 transitions. [2021-11-05 13:36:17,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-05 13:36:17,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:36:17,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:36:17,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-05 13:36:17,319 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 [2021-11-05 13:36:17,319 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:36:17,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:36:17,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1484791415, now seen corresponding path program 1 times [2021-11-05 13:36:17,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:36:17,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238998758] [2021-11-05 13:36:17,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:17,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:36:17,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:36:17,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907759664] [2021-11-05 13:36:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:17,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:36:17,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:36:17,417 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) [2021-11-05 13:36:17,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-05 13:36:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:36:18,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 3334 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-05 13:36:18,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:36:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:36:18,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:36:18,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:36:18,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238998758] [2021-11-05 13:36:18,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:36:18,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907759664] [2021-11-05 13:36:18,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907759664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:36:18,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:36:18,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:36:18,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214524370] [2021-11-05 13:36:18,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:36:18,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:36:18,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:36:18,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:36:18,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:36:18,674 INFO L87 Difference]: Start difference. First operand 2354 states and 3001 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2021-11-05 13:36:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:36:19,326 INFO L93 Difference]: Finished difference Result 6753 states and 8589 transitions. [2021-11-05 13:36:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:36:19,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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 155 [2021-11-05 13:36:19,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:36:19,333 INFO L225 Difference]: With dead ends: 6753 [2021-11-05 13:36:19,333 INFO L226 Difference]: Without dead ends: 4479 [2021-11-05 13:36:19,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.14ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:36:19,338 INFO L933 BasicCegarLoop]: 5546 mSDtfsCounter, 2679 mSDsluCounter, 13761 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 418.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2679 SdHoareTripleChecker+Valid, 19307 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.34ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 468.06ms IncrementalHoareTripleChecker+Time [2021-11-05 13:36:19,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2679 Valid, 19307 Invalid, 281 Unknown, 0 Unchecked, 11.34ms Time], IncrementalHoareTripleChecker [46 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 468.06ms Time] [2021-11-05 13:36:19,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4479 states. [2021-11-05 13:36:19,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4479 to 2434. [2021-11-05 13:36:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 2371 states have (on average 1.3078869675242513) internal successors, (3101), 2433 states have internal predecessors, (3101), 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) [2021-11-05 13:36:19,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3101 transitions. [2021-11-05 13:36:19,427 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 3101 transitions. Word has length 155 [2021-11-05 13:36:19,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:36:19,427 INFO L470 AbstractCegarLoop]: Abstraction has 2434 states and 3101 transitions. [2021-11-05 13:36:19,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2021-11-05 13:36:19,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 3101 transitions. [2021-11-05 13:36:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-05 13:36:19,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:36:19,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:36:19,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-05 13:36:19,647 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 [2021-11-05 13:36:19,648 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:36:19,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:36:19,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1162812939, now seen corresponding path program 1 times [2021-11-05 13:36:19,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:36:19,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162337124] [2021-11-05 13:36:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:19,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:36:19,716 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:36:19,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693410641] [2021-11-05 13:36:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:19,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:36:19,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:36:19,717 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) [2021-11-05 13:36:19,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-05 13:36:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:36:20,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 3339 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 13:36:20,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:36:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:36:21,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:36:21,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:36:21,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162337124] [2021-11-05 13:36:21,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:36:21,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693410641] [2021-11-05 13:36:21,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693410641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:36:21,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:36:21,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:36:21,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945484544] [2021-11-05 13:36:21,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:36:21,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:36:21,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:36:21,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:36:21,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:36:21,110 INFO L87 Difference]: Start difference. First operand 2434 states and 3101 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2021-11-05 13:36:23,152 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:36:25,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:36:27,385 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 [] [2021-11-05 13:36:39,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:36:39,736 INFO L93 Difference]: Finished difference Result 6811 states and 8651 transitions. [2021-11-05 13:36:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:36:39,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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 155 [2021-11-05 13:36:39,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:36:39,753 INFO L225 Difference]: With dead ends: 6811 [2021-11-05 13:36:39,753 INFO L226 Difference]: Without dead ends: 4456 [2021-11-05 13:36:39,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 261.08ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:36:39,767 INFO L933 BasicCegarLoop]: 4695 mSDtfsCounter, 2416 mSDsluCounter, 15065 mSDsCounter, 0 mSdLazyCounter, 4257 mSolverCounterSat, 75 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16319.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 19760 SdHoareTripleChecker+Invalid, 4335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.14ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 4257 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18042.45ms IncrementalHoareTripleChecker+Time [2021-11-05 13:36:39,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2416 Valid, 19760 Invalid, 4335 Unknown, 0 Unchecked, 47.14ms Time], IncrementalHoareTripleChecker [75 Valid, 4257 Invalid, 3 Unknown, 0 Unchecked, 18042.45ms Time] [2021-11-05 13:36:39,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4456 states. [2021-11-05 13:36:39,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4456 to 2474. [2021-11-05 13:36:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2411 states have (on average 1.3069265864786395) internal successors, (3151), 2473 states have internal predecessors, (3151), 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) [2021-11-05 13:36:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3151 transitions. [2021-11-05 13:36:39,974 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3151 transitions. Word has length 155 [2021-11-05 13:36:39,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:36:39,975 INFO L470 AbstractCegarLoop]: Abstraction has 2474 states and 3151 transitions. [2021-11-05 13:36:39,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2021-11-05 13:36:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3151 transitions. [2021-11-05 13:36:39,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-05 13:36:39,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:36:39,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:36:40,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-05 13:36:40,176 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 [2021-11-05 13:36:40,177 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:36:40,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:36:40,177 INFO L85 PathProgramCache]: Analyzing trace with hash -48290695, now seen corresponding path program 1 times [2021-11-05 13:36:40,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:36:40,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350279972] [2021-11-05 13:36:40,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:40,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:36:40,269 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:36:40,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91362160] [2021-11-05 13:36:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:36:40,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:36:40,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:36:40,276 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) [2021-11-05 13:36:40,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-05 13:36:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:36:41,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 3331 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-05 13:36:41,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:36:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:36:42,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:36:42,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:36:42,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350279972] [2021-11-05 13:36:42,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:36:42,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91362160] [2021-11-05 13:36:42,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91362160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:36:42,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:36:42,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 13:36:42,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129391018] [2021-11-05 13:36:42,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:36:42,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 13:36:42,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:36:42,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 13:36:42,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:36:42,334 INFO L87 Difference]: Start difference. First operand 2474 states and 3151 transitions. Second operand has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 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) [2021-11-05 13:37:09,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 13:37:10,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:37:10,166 INFO L93 Difference]: Finished difference Result 12235 states and 15430 transitions. [2021-11-05 13:37:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-05 13:37:10,167 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 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 155 [2021-11-05 13:37:10,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:37:10,181 INFO L225 Difference]: With dead ends: 12235 [2021-11-05 13:37:10,181 INFO L226 Difference]: Without dead ends: 9853 [2021-11-05 13:37:10,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1618.89ms TimeCoverageRelationStatistics Valid=369, Invalid=1353, Unknown=0, NotChecked=0, Total=1722 [2021-11-05 13:37:10,187 INFO L933 BasicCegarLoop]: 7334 mSDtfsCounter, 17709 mSDsluCounter, 47341 mSDsCounter, 0 mSdLazyCounter, 9555 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22956.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17709 SdHoareTripleChecker+Valid, 54675 SdHoareTripleChecker+Invalid, 9879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 159.10ms SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 9555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25310.46ms IncrementalHoareTripleChecker+Time [2021-11-05 13:37:10,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17709 Valid, 54675 Invalid, 9879 Unknown, 0 Unchecked, 159.10ms Time], IncrementalHoareTripleChecker [324 Valid, 9555 Invalid, 0 Unknown, 0 Unchecked, 25310.46ms Time] [2021-11-05 13:37:10,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9853 states. [2021-11-05 13:37:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9853 to 2507. [2021-11-05 13:37:10,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2444 states have (on average 1.3076923076923077) internal successors, (3196), 2506 states have internal predecessors, (3196), 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) [2021-11-05 13:37:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3196 transitions. [2021-11-05 13:37:10,317 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3196 transitions. Word has length 155 [2021-11-05 13:37:10,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:37:10,318 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 3196 transitions. [2021-11-05 13:37:10,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 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) [2021-11-05 13:37:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3196 transitions. [2021-11-05 13:37:10,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-05 13:37:10,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:37:10,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:37:10,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-05 13:37:10,537 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 [2021-11-05 13:37:10,537 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:37:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:37:10,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1188047161, now seen corresponding path program 1 times [2021-11-05 13:37:10,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:37:10,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973455491] [2021-11-05 13:37:10,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:37:10,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:37:10,604 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:37:10,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588675808] [2021-11-05 13:37:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:37:10,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:37:10,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:37:10,606 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) [2021-11-05 13:37:10,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-05 13:37:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:37:11,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 3321 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 13:37:11,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:37:11,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:37:11,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:37:11,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:37:11,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973455491] [2021-11-05 13:37:11,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:37:11,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588675808] [2021-11-05 13:37:11,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588675808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:37:11,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:37:11,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:37:11,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794322612] [2021-11-05 13:37:11,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:37:11,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:37:11,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:37:11,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:37:11,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:37:11,803 INFO L87 Difference]: Start difference. First operand 2507 states and 3196 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2021-11-05 13:37:16,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:37:16,194 INFO L93 Difference]: Finished difference Result 5426 states and 6977 transitions. [2021-11-05 13:37:16,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:37:16,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 155 [2021-11-05 13:37:16,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:37:16,199 INFO L225 Difference]: With dead ends: 5426 [2021-11-05 13:37:16,199 INFO L226 Difference]: Without dead ends: 2966 [2021-11-05 13:37:16,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.83ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:37:16,203 INFO L933 BasicCegarLoop]: 3245 mSDtfsCounter, 692 mSDsluCounter, 4626 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3610.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 7871 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.79ms SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4154.78ms IncrementalHoareTripleChecker+Time [2021-11-05 13:37:16,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 7871 Invalid, 1729 Unknown, 0 Unchecked, 17.79ms Time], IncrementalHoareTripleChecker [365 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 4154.78ms Time] [2021-11-05 13:37:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2021-11-05 13:37:16,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2687. [2021-11-05 13:37:16,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2687 states, 2624 states have (on average 1.2854420731707317) internal successors, (3373), 2686 states have internal predecessors, (3373), 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) [2021-11-05 13:37:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2687 states to 2687 states and 3373 transitions. [2021-11-05 13:37:16,313 INFO L78 Accepts]: Start accepts. Automaton has 2687 states and 3373 transitions. Word has length 155 [2021-11-05 13:37:16,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:37:16,314 INFO L470 AbstractCegarLoop]: Abstraction has 2687 states and 3373 transitions. [2021-11-05 13:37:16,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2021-11-05 13:37:16,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2687 states and 3373 transitions. [2021-11-05 13:37:16,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-05 13:37:16,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:37:16,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:37:16,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-05 13:37:16,556 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 [2021-11-05 13:37:16,556 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:37:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:37:16,557 INFO L85 PathProgramCache]: Analyzing trace with hash 708247065, now seen corresponding path program 1 times [2021-11-05 13:37:16,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:37:16,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841715998] [2021-11-05 13:37:16,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:37:16,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:37:16,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:37:16,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661366949] [2021-11-05 13:37:16,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:37:16,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:37:16,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:37:16,627 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) [2021-11-05 13:37:16,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-05 13:37:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:37:18,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 3341 conjuncts, 149 conjunts are in the unsatisfiable core [2021-11-05 13:37:18,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:37:18,555 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 [2021-11-05 13:37:19,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:19,298 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 [2021-11-05 13:37:19,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:19,324 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 [2021-11-05 13:37:19,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:19,410 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 [2021-11-05 13:37:19,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:19,430 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 [2021-11-05 13:37:19,732 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-05 13:37:19,733 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 [2021-11-05 13:37:19,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:19,944 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-05 13:37:19,945 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 [2021-11-05 13:37:19,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:20,000 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-05 13:37:20,001 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 [2021-11-05 13:37:20,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:20,736 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-05 13:37:20,736 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 [2021-11-05 13:37:20,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:20,768 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-05 13:37:20,769 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 [2021-11-05 13:37:20,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-05 13:37:20,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-05 13:37:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:37:21,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:37:21,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:37:21,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841715998] [2021-11-05 13:37:21,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:37:21,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661366949] [2021-11-05 13:37:21,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661366949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:37:21,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:37:21,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 13:37:21,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356132641] [2021-11-05 13:37:21,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:37:21,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 13:37:21,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:37:21,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 13:37:21,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-05 13:37:21,395 INFO L87 Difference]: Start difference. First operand 2687 states and 3373 transitions. Second operand has 18 states, 18 states have (on average 8.833333333333334) internal successors, (159), 18 states have internal predecessors, (159), 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) [2021-11-05 13:37:23,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:37:25,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:37:27,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:37:29,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:37:32,010 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 [] [2021-11-05 13:37:42,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:37:42,319 INFO L93 Difference]: Finished difference Result 5471 states and 6866 transitions. [2021-11-05 13:37:42,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 13:37:42,319 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.833333333333334) internal successors, (159), 18 states have internal predecessors, (159), 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 159 [2021-11-05 13:37:42,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:37:42,322 INFO L225 Difference]: With dead ends: 5471 [2021-11-05 13:37:42,322 INFO L226 Difference]: Without dead ends: 2857 [2021-11-05 13:37:42,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1974.29ms TimeCoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2021-11-05 13:37:42,326 INFO L933 BasicCegarLoop]: 2962 mSDtfsCounter, 501 mSDsluCounter, 21791 mSDsCounter, 0 mSdLazyCounter, 5219 mSolverCounterSat, 42 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17762.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 24753 SdHoareTripleChecker+Invalid, 5266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.33ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 5219 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19394.80ms IncrementalHoareTripleChecker+Time [2021-11-05 13:37:42,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 24753 Invalid, 5266 Unknown, 0 Unchecked, 37.33ms Time], IncrementalHoareTripleChecker [42 Valid, 5219 Invalid, 5 Unknown, 0 Unchecked, 19394.80ms Time] [2021-11-05 13:37:42,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2021-11-05 13:37:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2717. [2021-11-05 13:37:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2654 states have (on average 1.284476262245667) internal successors, (3409), 2716 states have internal predecessors, (3409), 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) [2021-11-05 13:37:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 3409 transitions. [2021-11-05 13:37:42,442 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 3409 transitions. Word has length 159 [2021-11-05 13:37:42,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:37:42,442 INFO L470 AbstractCegarLoop]: Abstraction has 2717 states and 3409 transitions. [2021-11-05 13:37:42,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.833333333333334) internal successors, (159), 18 states have internal predecessors, (159), 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) [2021-11-05 13:37:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 3409 transitions. [2021-11-05 13:37:42,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-05 13:37:42,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:37:42,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:37:42,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-05 13:37:42,671 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 [2021-11-05 13:37:42,672 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:37:42,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:37:42,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1342161833, now seen corresponding path program 1 times [2021-11-05 13:37:42,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:37:42,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088537550] [2021-11-05 13:37:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:37:42,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:37:42,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:37:42,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226619984] [2021-11-05 13:37:42,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:37:42,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:37:42,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:37:42,796 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) [2021-11-05 13:37:42,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-05 13:37:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:37:43,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 3336 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 13:37:43,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:37:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:37:44,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:37:44,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:37:44,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088537550] [2021-11-05 13:37:44,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:37:44,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226619984] [2021-11-05 13:37:44,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226619984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:37:44,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:37:44,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:37:44,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599151628] [2021-11-05 13:37:44,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:37:44,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:37:44,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:37:44,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:37:44,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:37:44,170 INFO L87 Difference]: Start difference. First operand 2717 states and 3409 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 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) [2021-11-05 13:37:46,228 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 [] [2021-11-05 13:37:48,397 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 [] [2021-11-05 13:38:04,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:38:04,115 INFO L93 Difference]: Finished difference Result 6873 states and 8558 transitions. [2021-11-05 13:38:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:38:04,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 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 159 [2021-11-05 13:38:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:38:04,123 INFO L225 Difference]: With dead ends: 6873 [2021-11-05 13:38:04,123 INFO L226 Difference]: Without dead ends: 4220 [2021-11-05 13:38:04,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 198.48ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:38:04,127 INFO L933 BasicCegarLoop]: 3909 mSDtfsCounter, 1800 mSDsluCounter, 8042 mSDsCounter, 0 mSdLazyCounter, 4221 mSolverCounterSat, 640 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16475.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 11951 SdHoareTripleChecker+Invalid, 4863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.81ms SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 4221 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19340.71ms IncrementalHoareTripleChecker+Time [2021-11-05 13:38:04,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1800 Valid, 11951 Invalid, 4863 Unknown, 0 Unchecked, 55.81ms Time], IncrementalHoareTripleChecker [640 Valid, 4221 Invalid, 2 Unknown, 0 Unchecked, 19340.71ms Time] [2021-11-05 13:38:04,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4220 states. [2021-11-05 13:38:04,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 2811. [2021-11-05 13:38:04,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2748 states have (on average 1.274745269286754) internal successors, (3503), 2810 states have internal predecessors, (3503), 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) [2021-11-05 13:38:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 3503 transitions. [2021-11-05 13:38:04,241 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 3503 transitions. Word has length 159 [2021-11-05 13:38:04,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:38:04,242 INFO L470 AbstractCegarLoop]: Abstraction has 2811 states and 3503 transitions. [2021-11-05 13:38:04,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 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) [2021-11-05 13:38:04,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 3503 transitions. [2021-11-05 13:38:04,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-05 13:38:04,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:38:04,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:38:04,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-05 13:38:04,468 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 [2021-11-05 13:38:04,469 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:38:04,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:38:04,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1670633177, now seen corresponding path program 1 times [2021-11-05 13:38:04,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:38:04,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383488578] [2021-11-05 13:38:04,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:38:04,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:38:04,531 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:38:04,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257341306] [2021-11-05 13:38:04,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:38:04,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:38:04,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:38:04,533 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) [2021-11-05 13:38:04,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-05 13:38:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:38:05,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 3341 conjuncts, 126 conjunts are in the unsatisfiable core [2021-11-05 13:38:05,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:38:05,790 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 [2021-11-05 13:38:06,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:38:06,530 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 [2021-11-05 13:38:06,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:38:06,547 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 [2021-11-05 13:38:06,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:38:06,622 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 [2021-11-05 13:38:06,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:38:06,646 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 [2021-11-05 13:38:06,882 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-05 13:38:06,882 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 [2021-11-05 13:38:07,053 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-05 13:38:07,053 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 3 case distinctions, treesize of input 63 treesize of output 54 [2021-11-05 13:38:07,110 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-05 13:38:07,110 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 3 case distinctions, treesize of input 48 treesize of output 39 [2021-11-05 13:38:07,679 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-05 13:38:07,680 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 59 treesize of output 54 [2021-11-05 13:38:07,709 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-05 13:38:07,710 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 48 treesize of output 43 [2021-11-05 13:38:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:38:08,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:38:08,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:38:08,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383488578] [2021-11-05 13:38:08,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:38:08,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257341306] [2021-11-05 13:38:08,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257341306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:38:08,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:38:08,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-05 13:38:08,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401768592] [2021-11-05 13:38:08,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:38:08,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-05 13:38:08,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:38:08,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-05 13:38:08,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-11-05 13:38:08,357 INFO L87 Difference]: Start difference. First operand 2811 states and 3503 transitions. Second operand has 20 states, 20 states have (on average 7.95) internal successors, (159), 20 states have internal predecessors, (159), 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) [2021-11-05 13:38:10,407 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 [] [2021-11-05 13:38:12,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:38:14,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:38:16,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:38:18,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:38:34,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:38:34,968 INFO L93 Difference]: Finished difference Result 6656 states and 8218 transitions. [2021-11-05 13:38:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-05 13:38:34,969 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.95) internal successors, (159), 20 states have internal predecessors, (159), 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 159 [2021-11-05 13:38:34,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:38:34,972 INFO L225 Difference]: With dead ends: 6656 [2021-11-05 13:38:34,973 INFO L226 Difference]: Without dead ends: 3962 [2021-11-05 13:38:34,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 2596.07ms TimeCoverageRelationStatistics Valid=256, Invalid=1466, Unknown=0, NotChecked=0, Total=1722 [2021-11-05 13:38:34,976 INFO L933 BasicCegarLoop]: 2985 mSDtfsCounter, 1759 mSDsluCounter, 32287 mSDsCounter, 0 mSdLazyCounter, 7928 mSolverCounterSat, 226 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22065.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 35272 SdHoareTripleChecker+Invalid, 8159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.94ms SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 7928 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24326.83ms IncrementalHoareTripleChecker+Time [2021-11-05 13:38:34,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1759 Valid, 35272 Invalid, 8159 Unknown, 0 Unchecked, 59.94ms Time], IncrementalHoareTripleChecker [226 Valid, 7928 Invalid, 5 Unknown, 0 Unchecked, 24326.83ms Time] [2021-11-05 13:38:34,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-11-05 13:38:35,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 2832. [2021-11-05 13:38:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2769 states have (on average 1.2726616106897797) internal successors, (3524), 2831 states have internal predecessors, (3524), 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) [2021-11-05 13:38:35,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 3524 transitions. [2021-11-05 13:38:35,079 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 3524 transitions. Word has length 159 [2021-11-05 13:38:35,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:38:35,080 INFO L470 AbstractCegarLoop]: Abstraction has 2832 states and 3524 transitions. [2021-11-05 13:38:35,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.95) internal successors, (159), 20 states have internal predecessors, (159), 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) [2021-11-05 13:38:35,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 3524 transitions. [2021-11-05 13:38:35,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-05 13:38:35,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:38:35,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:38:35,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-05 13:38:35,305 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 [2021-11-05 13:38:35,306 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:38:35,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:38:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1990545623, now seen corresponding path program 1 times [2021-11-05 13:38:35,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:38:35,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923080549] [2021-11-05 13:38:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:38:35,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:38:35,369 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:38:35,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852262279] [2021-11-05 13:38:35,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:38:35,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:38:35,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:38:35,376 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) [2021-11-05 13:38:35,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-05 13:38:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:38:36,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 3346 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 13:38:36,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:38:36,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:38:36,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:38:36,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:38:36,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923080549] [2021-11-05 13:38:36,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:38:36,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852262279] [2021-11-05 13:38:36,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852262279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:38:36,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:38:36,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:38:36,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269533886] [2021-11-05 13:38:36,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:38:36,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:38:36,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:38:36,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:38:36,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:38:36,635 INFO L87 Difference]: Start difference. First operand 2832 states and 3524 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2021-11-05 13:38:37,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:38:37,181 INFO L93 Difference]: Finished difference Result 5510 states and 6848 transitions. [2021-11-05 13:38:37,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:38:37,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 159 [2021-11-05 13:38:37,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:38:37,185 INFO L225 Difference]: With dead ends: 5510 [2021-11-05 13:38:37,186 INFO L226 Difference]: Without dead ends: 2802 [2021-11-05 13:38:37,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:38:37,190 INFO L933 BasicCegarLoop]: 2935 mSDtfsCounter, 27 mSDsluCounter, 5804 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 349.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 8739 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.51ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 402.46ms IncrementalHoareTripleChecker+Time [2021-11-05 13:38:37,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 8739 Invalid, 170 Unknown, 0 Unchecked, 5.51ms Time], IncrementalHoareTripleChecker [37 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 402.46ms Time] [2021-11-05 13:38:37,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2021-11-05 13:38:37,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2786. [2021-11-05 13:38:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2723 states have (on average 1.2651487330150568) internal successors, (3445), 2785 states have internal predecessors, (3445), 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) [2021-11-05 13:38:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3445 transitions. [2021-11-05 13:38:37,306 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3445 transitions. Word has length 159 [2021-11-05 13:38:37,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:38:37,307 INFO L470 AbstractCegarLoop]: Abstraction has 2786 states and 3445 transitions. [2021-11-05 13:38:37,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2021-11-05 13:38:37,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3445 transitions. [2021-11-05 13:38:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-05 13:38:37,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:38:37,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:38:37,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-05 13:38:37,522 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 [2021-11-05 13:38:37,523 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:38:37,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:38:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1787039805, now seen corresponding path program 1 times [2021-11-05 13:38:37,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:38:37,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546487977] [2021-11-05 13:38:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:38:37,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:38:37,575 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:38:37,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414212405] [2021-11-05 13:38:37,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:38:37,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:38:37,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:38:37,577 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) [2021-11-05 13:38:37,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-05 13:38:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:38:39,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 3363 conjuncts, 166 conjunts are in the unsatisfiable core [2021-11-05 13:38:39,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:38:40,843 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 43 treesize of output 42 [2021-11-05 13:38:40,847 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 31 [2021-11-05 13:38:40,851 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 21 treesize of output 20 [2021-11-05 13:38:40,962 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-05 13:38:40,963 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 [2021-11-05 13:38:41,090 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 45 treesize of output 33 [2021-11-05 13:38:41,095 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 30 treesize of output 18 [2021-11-05 13:38:41,436 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 45 treesize of output 33 [2021-11-05 13:38:41,441 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 30 treesize of output 18 [2021-11-05 13:38:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:38:41,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:38:41,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:38:41,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546487977] [2021-11-05 13:38:41,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:38:41,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414212405] [2021-11-05 13:38:41,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414212405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:38:41,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:38:41,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-05 13:38:41,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604512451] [2021-11-05 13:38:41,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:38:41,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-05 13:38:41,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:38:41,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-05 13:38:41,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-11-05 13:38:41,761 INFO L87 Difference]: Start difference. First operand 2786 states and 3445 transitions. Second operand has 22 states, 22 states have (on average 7.2727272727272725) internal successors, (160), 22 states have internal predecessors, (160), 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) [2021-11-05 13:38:43,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:38:45,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:38:48,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:38:50,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:38:52,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:38:54,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:39:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:39:24,627 INFO L93 Difference]: Finished difference Result 7899 states and 9730 transitions. [2021-11-05 13:39:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-05 13:39:24,627 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.2727272727272725) internal successors, (160), 22 states have internal predecessors, (160), 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 160 [2021-11-05 13:39:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:39:24,633 INFO L225 Difference]: With dead ends: 7899 [2021-11-05 13:39:24,634 INFO L226 Difference]: Without dead ends: 5314 [2021-11-05 13:39:24,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 2226.83ms TimeCoverageRelationStatistics Valid=251, Invalid=1231, Unknown=0, NotChecked=0, Total=1482 [2021-11-05 13:39:24,639 INFO L933 BasicCegarLoop]: 4669 mSDtfsCounter, 6012 mSDsluCounter, 39146 mSDsCounter, 0 mSdLazyCounter, 10244 mSolverCounterSat, 501 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35921.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6012 SdHoareTripleChecker+Valid, 43815 SdHoareTripleChecker+Invalid, 12057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 137.45ms SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 10244 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 1306 IncrementalHoareTripleChecker+Unchecked, 40351.84ms IncrementalHoareTripleChecker+Time [2021-11-05 13:39:24,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6012 Valid, 43815 Invalid, 12057 Unknown, 0 Unchecked, 137.45ms Time], IncrementalHoareTripleChecker [501 Valid, 10244 Invalid, 6 Unknown, 1306 Unchecked, 40351.84ms Time] [2021-11-05 13:39:24,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5314 states. [2021-11-05 13:39:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5314 to 2853. [2021-11-05 13:39:24,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2790 states have (on average 1.2627240143369176) internal successors, (3523), 2852 states have internal predecessors, (3523), 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) [2021-11-05 13:39:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 3523 transitions. [2021-11-05 13:39:24,776 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 3523 transitions. Word has length 160 [2021-11-05 13:39:24,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:39:24,777 INFO L470 AbstractCegarLoop]: Abstraction has 2853 states and 3523 transitions. [2021-11-05 13:39:24,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.2727272727272725) internal successors, (160), 22 states have internal predecessors, (160), 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) [2021-11-05 13:39:24,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 3523 transitions. [2021-11-05 13:39:24,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-05 13:39:24,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:39:24,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:39:24,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-05 13:39:24,981 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 [2021-11-05 13:39:24,982 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:39:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:39:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash 562446205, now seen corresponding path program 1 times [2021-11-05 13:39:24,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:39:24,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310122552] [2021-11-05 13:39:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:24,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:39:25,047 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:39:25,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832604220] [2021-11-05 13:39:25,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:25,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:39:25,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:39:25,064 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) [2021-11-05 13:39:25,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-05 13:39:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:39:27,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 3363 conjuncts, 165 conjunts are in the unsatisfiable core [2021-11-05 13:39:27,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:39:29,031 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 43 treesize of output 42 [2021-11-05 13:39:29,038 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 31 [2021-11-05 13:39:29,045 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 21 treesize of output 20 [2021-11-05 13:39:29,209 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-05 13:39:29,209 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 [2021-11-05 13:39:29,334 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 45 treesize of output 33 [2021-11-05 13:39:29,341 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 30 treesize of output 18 [2021-11-05 13:39:29,704 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 45 treesize of output 33 [2021-11-05 13:39:29,711 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 30 treesize of output 18 [2021-11-05 13:39:29,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:39:29,903 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2021-11-05 13:39:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:39:30,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:39:30,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:39:30,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310122552] [2021-11-05 13:39:30,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:39:30,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832604220] [2021-11-05 13:39:30,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832604220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:39:30,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:39:30,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-05 13:39:30,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325610804] [2021-11-05 13:39:30,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:39:30,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-05 13:39:30,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:39:30,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-05 13:39:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-11-05 13:39:30,422 INFO L87 Difference]: Start difference. First operand 2853 states and 3523 transitions. Second operand has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 23 states have internal predecessors, (160), 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) [2021-11-05 13:39:32,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:39:34,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:39:36,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:39:39,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:39:41,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:39:43,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:39:45,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:39:47,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:40:27,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:27,144 INFO L93 Difference]: Finished difference Result 8488 states and 10405 transitions. [2021-11-05 13:40:27,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-05 13:40:27,144 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 23 states have internal predecessors, (160), 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 160 [2021-11-05 13:40:27,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:27,152 INFO L225 Difference]: With dead ends: 8488 [2021-11-05 13:40:27,152 INFO L226 Difference]: Without dead ends: 5910 [2021-11-05 13:40:27,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 4160.35ms TimeCoverageRelationStatistics Valid=373, Invalid=1979, Unknown=0, NotChecked=0, Total=2352 [2021-11-05 13:40:27,157 INFO L933 BasicCegarLoop]: 4739 mSDtfsCounter, 8934 mSDsluCounter, 45044 mSDsCounter, 0 mSdLazyCounter, 12515 mSolverCounterSat, 427 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46405.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8934 SdHoareTripleChecker+Valid, 49783 SdHoareTripleChecker+Invalid, 13465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 174.91ms SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 12515 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 515 IncrementalHoareTripleChecker+Unchecked, 52464.70ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:27,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8934 Valid, 49783 Invalid, 13465 Unknown, 0 Unchecked, 174.91ms Time], IncrementalHoareTripleChecker [427 Valid, 12515 Invalid, 8 Unknown, 515 Unchecked, 52464.70ms Time] [2021-11-05 13:40:27,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5910 states. [2021-11-05 13:40:27,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5910 to 2860. [2021-11-05 13:40:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2797 states have (on average 1.262066499821237) internal successors, (3530), 2859 states have internal predecessors, (3530), 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) [2021-11-05 13:40:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 3530 transitions. [2021-11-05 13:40:27,335 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 3530 transitions. Word has length 160 [2021-11-05 13:40:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:27,335 INFO L470 AbstractCegarLoop]: Abstraction has 2860 states and 3530 transitions. [2021-11-05 13:40:27,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 23 states have internal predecessors, (160), 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) [2021-11-05 13:40:27,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 3530 transitions. [2021-11-05 13:40:27,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-05 13:40:27,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:27,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:40:27,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-05 13:40:27,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:27,557 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:40:27,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:27,558 INFO L85 PathProgramCache]: Analyzing trace with hash 380601358, now seen corresponding path program 1 times [2021-11-05 13:40:27,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:27,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366981935] [2021-11-05 13:40:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:27,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:27,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:27,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919644255] [2021-11-05 13:40:27,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:27,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:27,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:27,615 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:40:27,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-05 13:46:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:46:48,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 3382 conjuncts, 102 conjunts are in the unsatisfiable core [2021-11-05 13:46:48,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:46:48,949 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:46:48,949 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 [2021-11-05 13:46:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:46:50,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:46:50,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:46:50,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366981935] [2021-11-05 13:46:50,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:46:50,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919644255] [2021-11-05 13:46:50,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919644255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:46:50,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:46:50,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 13:46:50,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637449777] [2021-11-05 13:46:50,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:46:50,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 13:46:50,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:46:50,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 13:46:50,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-05 13:46:50,317 INFO L87 Difference]: Start difference. First operand 2860 states and 3530 transitions. Second operand has 16 states, 16 states have (on average 10.0625) internal successors, (161), 16 states have internal predecessors, (161), 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) [2021-11-05 13:47:20,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:20,322 INFO L93 Difference]: Finished difference Result 12128 states and 14728 transitions. [2021-11-05 13:47:20,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-05 13:47:20,323 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.0625) internal successors, (161), 16 states have internal predecessors, (161), 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 161 [2021-11-05 13:47:20,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:20,334 INFO L225 Difference]: With dead ends: 12128 [2021-11-05 13:47:20,334 INFO L226 Difference]: Without dead ends: 9418 [2021-11-05 13:47:20,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 3534.89ms TimeCoverageRelationStatistics Valid=682, Invalid=2180, Unknown=0, NotChecked=0, Total=2862 [2021-11-05 13:47:20,343 INFO L933 BasicCegarLoop]: 4790 mSDtfsCounter, 24625 mSDsluCounter, 31438 mSDsCounter, 0 mSdLazyCounter, 8292 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21510.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24625 SdHoareTripleChecker+Valid, 36228 SdHoareTripleChecker+Invalid, 9124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 143.34ms SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 8292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25600.39ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:20,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24625 Valid, 36228 Invalid, 9124 Unknown, 0 Unchecked, 143.34ms Time], IncrementalHoareTripleChecker [832 Valid, 8292 Invalid, 0 Unknown, 0 Unchecked, 25600.39ms Time] [2021-11-05 13:47:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9418 states. [2021-11-05 13:47:20,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9418 to 2866. [2021-11-05 13:47:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2803 states have (on average 1.2615055297895112) internal successors, (3536), 2865 states have internal predecessors, (3536), 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) [2021-11-05 13:47:20,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 3536 transitions. [2021-11-05 13:47:20,553 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 3536 transitions. Word has length 161 [2021-11-05 13:47:20,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:20,553 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 3536 transitions. [2021-11-05 13:47:20,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.0625) internal successors, (161), 16 states have internal predecessors, (161), 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) [2021-11-05 13:47:20,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 3536 transitions. [2021-11-05 13:47:20,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-05 13:47:20,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:20,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:47:20,759 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forcibly destroying the process [2021-11-05 13:47:20,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 137 [2021-11-05 13:47:20,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-05 13:47:20,815 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:47:20,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:20,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1192089338, now seen corresponding path program 1 times [2021-11-05 13:47:20,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:20,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517318599] [2021-11-05 13:47:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:20,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:20,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:47:20,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057085606] [2021-11-05 13:47:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:20,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:47:20,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:47:20,888 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:47:20,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-05 13:47:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:21,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 3388 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-05 13:47:21,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:47:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:22,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:47:22,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:22,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517318599] [2021-11-05 13:47:22,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:47:22,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057085606] [2021-11-05 13:47:22,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057085606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:22,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:22,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:47:22,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882340665] [2021-11-05 13:47:22,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:22,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:47:22,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:22,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:47:22,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:47:22,118 INFO L87 Difference]: Start difference. First operand 2866 states and 3536 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2021-11-05 13:47:24,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:24,812 INFO L93 Difference]: Finished difference Result 8691 states and 10711 transitions. [2021-11-05 13:47:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 13:47:24,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 161 [2021-11-05 13:47:24,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:24,818 INFO L225 Difference]: With dead ends: 8691 [2021-11-05 13:47:24,819 INFO L226 Difference]: Without dead ends: 5950 [2021-11-05 13:47:24,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 196.80ms TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-05 13:47:24,822 INFO L933 BasicCegarLoop]: 4895 mSDtfsCounter, 3397 mSDsluCounter, 21473 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1892.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3397 SdHoareTripleChecker+Valid, 26368 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.38ms SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2132.72ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:24,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3397 Valid, 26368 Invalid, 992 Unknown, 0 Unchecked, 18.38ms Time], IncrementalHoareTripleChecker [101 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 2132.72ms Time] [2021-11-05 13:47:24,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5950 states. [2021-11-05 13:47:24,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5950 to 2866. [2021-11-05 13:47:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2803 states have (on average 1.258294684266857) internal successors, (3527), 2865 states have internal predecessors, (3527), 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) [2021-11-05 13:47:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 3527 transitions. [2021-11-05 13:47:24,991 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 3527 transitions. Word has length 161 [2021-11-05 13:47:24,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:24,992 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 3527 transitions. [2021-11-05 13:47:24,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2021-11-05 13:47:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 3527 transitions. [2021-11-05 13:47:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-05 13:47:24,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:24,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:47:25,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-05 13:47:25,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-05 13:47:25,216 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:47:25,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:25,216 INFO L85 PathProgramCache]: Analyzing trace with hash -841556905, now seen corresponding path program 1 times [2021-11-05 13:47:25,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:25,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499132750] [2021-11-05 13:47:25,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:25,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:25,273 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:47:25,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164386915] [2021-11-05 13:47:25,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:25,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:47:25,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:47:25,286 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:47:25,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-05 13:47:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:27,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 3358 conjuncts, 156 conjunts are in the unsatisfiable core [2021-11-05 13:47:27,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:47:27,460 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 [2021-11-05 13:47:27,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:27,785 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 [2021-11-05 13:47:28,394 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-05 13:47:28,398 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 [2021-11-05 13:47:28,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:28,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:28,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:28,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2021-11-05 13:47:28,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:28,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:28,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:28,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2021-11-05 13:47:29,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:29,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:29,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:29,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2021-11-05 13:47:29,462 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-05 13:47:29,462 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 [2021-11-05 13:47:29,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:29,706 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-05 13:47:29,706 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 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-05 13:47:34,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:34,462 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-05 13:47:34,463 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 3 case distinctions, treesize of input 40 treesize of output 42 [2021-11-05 13:47:35,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:35,085 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:47:35,085 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 72 treesize of output 36 [2021-11-05 13:47:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:35,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:47:35,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:35,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499132750] [2021-11-05 13:47:35,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:47:35,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164386915] [2021-11-05 13:47:35,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164386915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:35,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:35,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-05 13:47:35,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278976673] [2021-11-05 13:47:35,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:35,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-05 13:47:35,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:35,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-05 13:47:35,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=352, Unknown=1, NotChecked=0, Total=420 [2021-11-05 13:47:35,790 INFO L87 Difference]: Start difference. First operand 2866 states and 3527 transitions. Second operand has 21 states, 21 states have (on average 7.714285714285714) internal successors, (162), 21 states have internal predecessors, (162), 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) [2021-11-05 13:47:37,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:40,038 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:42,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:44,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:56,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:56,362 INFO L93 Difference]: Finished difference Result 5729 states and 7051 transitions. [2021-11-05 13:47:56,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 13:47:56,365 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.714285714285714) internal successors, (162), 21 states have internal predecessors, (162), 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 162 [2021-11-05 13:47:56,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:56,369 INFO L225 Difference]: With dead ends: 5729 [2021-11-05 13:47:56,369 INFO L226 Difference]: Without dead ends: 3078 [2021-11-05 13:47:56,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 6317.16ms TimeCoverageRelationStatistics Valid=120, Invalid=691, Unknown=1, NotChecked=0, Total=812 [2021-11-05 13:47:56,374 INFO L933 BasicCegarLoop]: 3006 mSDtfsCounter, 384 mSDsluCounter, 18909 mSDsCounter, 0 mSdLazyCounter, 2734 mSolverCounterSat, 46 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17174.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 21915 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.60ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2734 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 19406.34ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:56,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 21915 Invalid, 2874 Unknown, 0 Unchecked, 33.60ms Time], IncrementalHoareTripleChecker [46 Valid, 2734 Invalid, 4 Unknown, 90 Unchecked, 19406.34ms Time] [2021-11-05 13:47:56,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2021-11-05 13:47:56,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2923. [2021-11-05 13:47:56,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2860 states have (on average 1.258041958041958) internal successors, (3598), 2922 states have internal predecessors, (3598), 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) [2021-11-05 13:47:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 3598 transitions. [2021-11-05 13:47:56,527 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 3598 transitions. Word has length 162 [2021-11-05 13:47:56,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:56,527 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 3598 transitions. [2021-11-05 13:47:56,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.714285714285714) internal successors, (162), 21 states have internal predecessors, (162), 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) [2021-11-05 13:47:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 3598 transitions. [2021-11-05 13:47:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-05 13:47:56,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:56,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:47:56,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-05 13:47:56,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:47:56,755 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-05 13:47:56,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:56,755 INFO L85 PathProgramCache]: Analyzing trace with hash -455694503, now seen corresponding path program 1 times [2021-11-05 13:47:56,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:56,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30167085] [2021-11-05 13:47:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:56,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:56,826 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:47:56,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497016473] [2021-11-05 13:47:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:56,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:47:56,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:47:56,828 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:47:56,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process Killed by 15