./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_move_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 ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 09:38:45,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 09:38:45,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 09:38:45,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 09:38:45,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 09:38:45,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 09:38:45,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 09:38:45,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 09:38:45,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 09:38:45,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 09:38:45,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 09:38:45,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 09:38:45,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 09:38:45,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 09:38:45,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 09:38:45,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 09:38:45,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 09:38:45,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 09:38:45,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 09:38:45,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 09:38:45,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 09:38:45,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 09:38:45,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 09:38:45,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 09:38:45,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 09:38:45,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 09:38:45,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 09:38:45,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 09:38:45,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 09:38:45,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 09:38:45,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 09:38:45,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 09:38:45,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 09:38:45,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 09:38:45,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 09:38:45,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 09:38:45,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 09:38:45,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 09:38:45,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 09:38:45,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 09:38:45,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 09:38:45,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 09:38:45,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 09:38:45,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 09:38:45,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 09:38:45,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 09:38:45,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 09:38:45,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 09:38:45,173 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 09:38:45,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 09:38:45,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 09:38:45,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 09:38:45,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 09:38:45,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 09:38:45,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 09:38:45,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 09:38:45,175 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 09:38:45,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 09:38:45,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 09:38:45,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 09:38:45,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 09:38:45,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 09:38:45,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 09:38:45,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 09:38:45,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 09:38:45,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 09:38:45,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 09:38:45,177 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 09:38:45,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 09:38:45,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 09:38:45,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 09:38:45,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 [2021-11-07 09:38:45,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 09:38:45,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 09:38:45,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 09:38:45,449 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 09:38:45,452 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 09:38:45,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2021-11-07 09:38:45,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9125dce5d/d0ddde582bc5407fa10736a4099fbb68/FLAGa6a70ba82 [2021-11-07 09:38:46,331 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 09:38:46,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2021-11-07 09:38:46,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9125dce5d/d0ddde582bc5407fa10736a4099fbb68/FLAGa6a70ba82 [2021-11-07 09:38:46,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9125dce5d/d0ddde582bc5407fa10736a4099fbb68 [2021-11-07 09:38:46,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 09:38:46,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 09:38:46,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 09:38:46,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 09:38:46,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 09:38:46,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:38:46" (1/1) ... [2021-11-07 09:38:46,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32401ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:46, skipping insertion in model container [2021-11-07 09:38:46,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:38:46" (1/1) ... [2021-11-07 09:38:46,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 09:38:47,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 09:38:47,368 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_hash_table_move_harness.i[4493,4506] [2021-11-07 09:38:47,377 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_hash_table_move_harness.i[4553,4566] [2021-11-07 09:38:47,411 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 09:38:47,423 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:38:48,686 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:48,687 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:48,687 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:48,688 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:48,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:48,701 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:48,702 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:48,704 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:48,705 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:48,707 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:48,708 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:48,709 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:48,709 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:49,503 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:38:49,505 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:38:49,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:38:49,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:38:49,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:38:49,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:38:49,510 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:38:49,524 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:38:49,525 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:38:49,525 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:38:49,751 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:38:50,210 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,214 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,253 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,255 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,266 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,267 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,284 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,288 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,288 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:38:50,395 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 09:38:50,421 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_hash_table_move_harness.i[4493,4506] [2021-11-07 09:38:50,423 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_hash_table_move_harness.i[4553,4566] [2021-11-07 09:38:50,452 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 09:38:50,454 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:38:50,495 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,498 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,499 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,499 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,500 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,511 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,513 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,517 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,517 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,517 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,550 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:38:50,550 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:38:50,551 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:38:50,552 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:38:50,553 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:38:50,553 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:38:50,554 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:38:50,554 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:38:50,555 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:38:50,555 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:38:50,582 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:38:50,718 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,718 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,726 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,726 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,729 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,730 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,747 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,748 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,751 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,751 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:38:50,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:38:51,005 INFO L208 MainTranslator]: Completed translation [2021-11-07 09:38:51,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:51 WrapperNode [2021-11-07 09:38:51,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 09:38:51,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 09:38:51,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 09:38:51,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 09:38:51,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:51" (1/1) ... [2021-11-07 09:38:51,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:51" (1/1) ... [2021-11-07 09:38:51,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 09:38:51,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 09:38:51,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 09:38:51,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 09:38:51,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:51" (1/1) ... [2021-11-07 09:38:51,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:51" (1/1) ... [2021-11-07 09:38:51,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:51" (1/1) ... [2021-11-07 09:38:51,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:51" (1/1) ... [2021-11-07 09:38:51,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:51" (1/1) ... [2021-11-07 09:38:51,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:51" (1/1) ... [2021-11-07 09:38:51,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:51" (1/1) ... [2021-11-07 09:38:51,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 09:38:51,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 09:38:51,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 09:38:51,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 09:38:51,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:51" (1/1) ... [2021-11-07 09:38:51,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 09:38:51,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:38:51,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 09:38:51,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 09:38:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-07 09:38:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 09:38:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 09:38:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 09:38:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 09:38:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 09:38:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-07 09:38:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 09:38:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-07 09:38:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 09:38:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 09:38:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 09:38:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 09:38:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 09:39:00,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 09:39:00,396 INFO L299 CfgBuilder]: Removed 124 assume(true) statements. [2021-11-07 09:39:00,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:39:00 BoogieIcfgContainer [2021-11-07 09:39:00,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 09:39:00,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 09:39:00,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 09:39:00,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 09:39:00,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:38:46" (1/3) ... [2021-11-07 09:39:00,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667d1a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:39:00, skipping insertion in model container [2021-11-07 09:39:00,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:51" (2/3) ... [2021-11-07 09:39:00,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667d1a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:39:00, skipping insertion in model container [2021-11-07 09:39:00,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:39:00" (3/3) ... [2021-11-07 09:39:00,407 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_move_harness.i [2021-11-07 09:39:00,411 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 09:39:00,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 09:39:00,454 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 09:39:00,460 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 09:39:00,460 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 09:39:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 116 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:00,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 09:39:00,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:39:00,499 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] [2021-11-07 09:39:00,499 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:39:00,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:39:00,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1930291544, now seen corresponding path program 1 times [2021-11-07 09:39:00,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:39:00,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21793384] [2021-11-07 09:39:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:39:00,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:39:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:39:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:39:01,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:39:01,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21793384] [2021-11-07 09:39:01,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21793384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:39:01,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:39:01,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 09:39:01,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479710590] [2021-11-07 09:39:01,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:39:01,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 09:39:01,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:39:01,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 09:39:01,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 09:39:01,291 INFO L87 Difference]: Start difference. First operand has 117 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 116 states have internal predecessors, (154), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:39:01,340 INFO L93 Difference]: Finished difference Result 230 states and 303 transitions. [2021-11-07 09:39:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 09:39:01,342 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 60 [2021-11-07 09:39:01,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:39:01,352 INFO L225 Difference]: With dead ends: 230 [2021-11-07 09:39:01,353 INFO L226 Difference]: Without dead ends: 111 [2021-11-07 09:39:01,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 09:39:01,363 INFO L933 BasicCegarLoop]: 138 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, 138 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 09:39:01,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 09:39:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-07 09:39:01,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-11-07 09:39:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 110 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2021-11-07 09:39:01,403 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 60 [2021-11-07 09:39:01,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:39:01,404 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2021-11-07 09:39:01,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:01,404 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2021-11-07 09:39:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 09:39:01,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:39:01,409 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] [2021-11-07 09:39:01,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 09:39:01,410 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:39:01,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:39:01,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2019289401, now seen corresponding path program 1 times [2021-11-07 09:39:01,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:39:01,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353546279] [2021-11-07 09:39:01,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:39:01,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:39:01,570 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:39:01,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808757353] [2021-11-07 09:39:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:39:01,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:39:01,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:39:01,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:39:01,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 09:39:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:39:02,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 2555 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 09:39:02,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:39:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:39:03,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:39:03,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:39:03,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353546279] [2021-11-07 09:39:03,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:39:03,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808757353] [2021-11-07 09:39:03,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808757353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:39:03,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:39:03,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:39:03,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006401117] [2021-11-07 09:39:03,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:39:03,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:39:03,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:39:03,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:39:03,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:39:03,090 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:03,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:39:03,379 INFO L93 Difference]: Finished difference Result 295 states and 352 transitions. [2021-11-07 09:39:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:39:03,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2021-11-07 09:39:03,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:39:03,382 INFO L225 Difference]: With dead ends: 295 [2021-11-07 09:39:03,383 INFO L226 Difference]: Without dead ends: 206 [2021-11-07 09:39:03,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 154.97ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:39:03,385 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 216 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 150.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.08ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 173.61ms IncrementalHoareTripleChecker+Time [2021-11-07 09:39:03,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 673 Invalid, 39 Unknown, 0 Unchecked, 6.08ms Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 173.61ms Time] [2021-11-07 09:39:03,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-07 09:39:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 117. [2021-11-07 09:39:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 116 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 138 transitions. [2021-11-07 09:39:03,397 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 138 transitions. Word has length 63 [2021-11-07 09:39:03,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:39:03,398 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 138 transitions. [2021-11-07 09:39:03,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:03,398 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 138 transitions. [2021-11-07 09:39:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 09:39:03,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:39:03,400 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] [2021-11-07 09:39:03,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 09:39:03,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:39:03,616 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:39:03,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:39:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash -986854087, now seen corresponding path program 1 times [2021-11-07 09:39:03,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:39:03,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558992070] [2021-11-07 09:39:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:39:03,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:39:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:39:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:39:04,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:39:04,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558992070] [2021-11-07 09:39:04,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558992070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:39:04,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:39:04,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:39:04,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045146815] [2021-11-07 09:39:04,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:39:04,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:39:04,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:39:04,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:39:04,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:39:04,313 INFO L87 Difference]: Start difference. First operand 117 states and 138 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:06,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:08,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:09,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:39:09,694 INFO L93 Difference]: Finished difference Result 232 states and 275 transitions. [2021-11-07 09:39:09,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:39:09,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 67 [2021-11-07 09:39:09,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:39:09,696 INFO L225 Difference]: With dead ends: 232 [2021-11-07 09:39:09,696 INFO L226 Difference]: Without dead ends: 153 [2021-11-07 09:39:09,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 714.10ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:39:09,698 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 276 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4591.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.86ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4858.08ms IncrementalHoareTripleChecker+Time [2021-11-07 09:39:09,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 551 Invalid, 133 Unknown, 0 Unchecked, 5.86ms Time], IncrementalHoareTripleChecker [8 Valid, 123 Invalid, 2 Unknown, 0 Unchecked, 4858.08ms Time] [2021-11-07 09:39:09,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-07 09:39:09,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 119. [2021-11-07 09:39:09,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 116 states have (on average 1.206896551724138) internal successors, (140), 118 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 140 transitions. [2021-11-07 09:39:09,708 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 140 transitions. Word has length 67 [2021-11-07 09:39:09,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:39:09,709 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 140 transitions. [2021-11-07 09:39:09,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:09,710 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 140 transitions. [2021-11-07 09:39:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 09:39:09,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:39:09,711 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] [2021-11-07 09:39:09,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 09:39:09,711 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:39:09,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:39:09,712 INFO L85 PathProgramCache]: Analyzing trace with hash -93367749, now seen corresponding path program 1 times [2021-11-07 09:39:09,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:39:09,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377581468] [2021-11-07 09:39:09,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:39:09,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:39:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:39:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:39:10,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:39:10,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377581468] [2021-11-07 09:39:10,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377581468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:39:10,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:39:10,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:39:10,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340349030] [2021-11-07 09:39:10,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:39:10,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:39:10,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:39:10,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:39:10,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:39:10,009 INFO L87 Difference]: Start difference. First operand 119 states and 140 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:10,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:39:10,156 INFO L93 Difference]: Finished difference Result 201 states and 237 transitions. [2021-11-07 09:39:10,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:39:10,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 67 [2021-11-07 09:39:10,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:39:10,158 INFO L225 Difference]: With dead ends: 201 [2021-11-07 09:39:10,158 INFO L226 Difference]: Without dead ends: 117 [2021-11-07 09:39:10,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:39:10,160 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 108 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.40ms IncrementalHoareTripleChecker+Time [2021-11-07 09:39:10,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 236 Invalid, 25 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 106.40ms Time] [2021-11-07 09:39:10,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-07 09:39:10,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-11-07 09:39:10,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 116 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) [2021-11-07 09:39:10,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2021-11-07 09:39:10,169 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 67 [2021-11-07 09:39:10,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:39:10,170 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2021-11-07 09:39:10,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2021-11-07 09:39:10,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 09:39:10,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:39:10,172 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] [2021-11-07 09:39:10,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 09:39:10,172 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:39:10,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:39:10,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1039203884, now seen corresponding path program 1 times [2021-11-07 09:39:10,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:39:10,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031707617] [2021-11-07 09:39:10,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:39:10,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:39:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:39:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:39:10,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:39:10,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031707617] [2021-11-07 09:39:10,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031707617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:39:10,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:39:10,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:39:10,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695571025] [2021-11-07 09:39:10,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:39:10,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:39:10,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:39:10,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:39:10,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:39:10,564 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:12,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:14,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:15,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:39:15,621 INFO L93 Difference]: Finished difference Result 200 states and 233 transitions. [2021-11-07 09:39:15,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:39:15,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 69 [2021-11-07 09:39:15,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:39:15,623 INFO L225 Difference]: With dead ends: 200 [2021-11-07 09:39:15,623 INFO L226 Difference]: Without dead ends: 120 [2021-11-07 09:39:15,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 428.65ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:39:15,624 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 119 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4399.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.10ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4726.10ms IncrementalHoareTripleChecker+Time [2021-11-07 09:39:15,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 293 Invalid, 95 Unknown, 0 Unchecked, 7.10ms Time], IncrementalHoareTripleChecker [24 Valid, 69 Invalid, 2 Unknown, 0 Unchecked, 4726.10ms Time] [2021-11-07 09:39:15,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-07 09:39:15,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2021-11-07 09:39:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 116 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:15,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2021-11-07 09:39:15,637 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 69 [2021-11-07 09:39:15,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:39:15,638 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2021-11-07 09:39:15,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2021-11-07 09:39:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 09:39:15,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:39:15,645 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] [2021-11-07 09:39:15,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 09:39:15,645 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:39:15,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:39:15,647 INFO L85 PathProgramCache]: Analyzing trace with hash 896958085, now seen corresponding path program 1 times [2021-11-07 09:39:15,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:39:15,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027992575] [2021-11-07 09:39:15,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:39:15,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:39:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:39:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:39:16,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:39:16,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027992575] [2021-11-07 09:39:16,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027992575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:39:16,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:39:16,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 09:39:16,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57029206] [2021-11-07 09:39:16,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:39:16,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 09:39:16,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:39:16,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 09:39:16,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:39:16,874 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:18,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:21,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:23,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:25,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:27,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:29,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:31,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:39:38,858 INFO L93 Difference]: Finished difference Result 322 states and 357 transitions. [2021-11-07 09:39:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 09:39:38,860 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 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 70 [2021-11-07 09:39:38,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:39:38,865 INFO L225 Difference]: With dead ends: 322 [2021-11-07 09:39:38,866 INFO L226 Difference]: Without dead ends: 285 [2021-11-07 09:39:38,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 5335.98ms TimeCoverageRelationStatistics Valid=510, Invalid=1560, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 09:39:38,868 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 804 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 88 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16053.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.65ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17186.27ms IncrementalHoareTripleChecker+Time [2021-11-07 09:39:38,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 1056 Invalid, 591 Unknown, 0 Unchecked, 18.65ms Time], IncrementalHoareTripleChecker [88 Valid, 496 Invalid, 7 Unknown, 0 Unchecked, 17186.27ms Time] [2021-11-07 09:39:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-07 09:39:38,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 139. [2021-11-07 09:39:38,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 136 states have (on average 1.161764705882353) internal successors, (158), 138 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 158 transitions. [2021-11-07 09:39:38,883 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 158 transitions. Word has length 70 [2021-11-07 09:39:38,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:39:38,884 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 158 transitions. [2021-11-07 09:39:38,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 158 transitions. [2021-11-07 09:39:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 09:39:38,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:39:38,886 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] [2021-11-07 09:39:38,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 09:39:38,886 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:39:38,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:39:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash -791985657, now seen corresponding path program 1 times [2021-11-07 09:39:38,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:39:38,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848482785] [2021-11-07 09:39:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:39:38,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:39:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:39:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:39:39,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:39:39,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848482785] [2021-11-07 09:39:39,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848482785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:39:39,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:39:39,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:39:39,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792677039] [2021-11-07 09:39:39,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:39:39,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:39:39,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:39:39,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:39:39,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:39:39,332 INFO L87 Difference]: Start difference. First operand 139 states and 158 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:39,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:39:39,641 INFO L93 Difference]: Finished difference Result 181 states and 205 transitions. [2021-11-07 09:39:39,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:39:39,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 70 [2021-11-07 09:39:39,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:39:39,642 INFO L225 Difference]: With dead ends: 181 [2021-11-07 09:39:39,643 INFO L226 Difference]: Without dead ends: 139 [2021-11-07 09:39:39,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 199.26ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:39:39,643 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 128 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.80ms IncrementalHoareTripleChecker+Time [2021-11-07 09:39:39,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 284 Invalid, 38 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 172.80ms Time] [2021-11-07 09:39:39,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-07 09:39:39,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-07 09:39:39,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 136 states have (on average 1.1470588235294117) internal successors, (156), 138 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:39,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2021-11-07 09:39:39,664 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 70 [2021-11-07 09:39:39,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:39:39,666 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2021-11-07 09:39:39,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2021-11-07 09:39:39,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 09:39:39,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:39:39,668 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] [2021-11-07 09:39:39,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 09:39:39,668 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:39:39,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:39:39,669 INFO L85 PathProgramCache]: Analyzing trace with hash -520428082, now seen corresponding path program 1 times [2021-11-07 09:39:39,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:39:39,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862210506] [2021-11-07 09:39:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:39:39,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:39:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:39:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:39:42,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:39:42,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862210506] [2021-11-07 09:39:42,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862210506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:39:42,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:39:42,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 09:39:42,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053876818] [2021-11-07 09:39:42,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:39:42,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 09:39:42,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:39:42,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 09:39:42,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:39:42,881 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:39:44,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:47,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:49,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:51,396 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:53,580 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:55,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:39:57,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:00,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:02,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:04,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:06,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:12,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:40:12,814 INFO L93 Difference]: Finished difference Result 230 states and 256 transitions. [2021-11-07 09:40:12,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 09:40:12,816 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 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 73 [2021-11-07 09:40:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:40:12,817 INFO L225 Difference]: With dead ends: 230 [2021-11-07 09:40:12,817 INFO L226 Difference]: Without dead ends: 193 [2021-11-07 09:40:12,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 4107.92ms TimeCoverageRelationStatistics Valid=193, Invalid=929, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 09:40:12,819 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 394 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 53 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25129.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.04ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27123.68ms IncrementalHoareTripleChecker+Time [2021-11-07 09:40:12,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 1176 Invalid, 784 Unknown, 0 Unchecked, 21.04ms Time], IncrementalHoareTripleChecker [53 Valid, 720 Invalid, 11 Unknown, 0 Unchecked, 27123.68ms Time] [2021-11-07 09:40:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-07 09:40:12,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2021-11-07 09:40:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 139 states have (on average 1.143884892086331) internal successors, (159), 141 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) [2021-11-07 09:40:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 159 transitions. [2021-11-07 09:40:12,831 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 159 transitions. Word has length 73 [2021-11-07 09:40:12,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:40:12,831 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 159 transitions. [2021-11-07 09:40:12,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:12,832 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 159 transitions. [2021-11-07 09:40:12,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 09:40:12,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:40:12,833 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] [2021-11-07 09:40:12,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 09:40:12,833 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:40:12,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:40:12,834 INFO L85 PathProgramCache]: Analyzing trace with hash 213292611, now seen corresponding path program 1 times [2021-11-07 09:40:12,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:40:12,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201226272] [2021-11-07 09:40:12,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:40:12,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:40:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:40:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:40:14,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:40:14,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201226272] [2021-11-07 09:40:14,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201226272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:40:14,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:40:14,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:40:14,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503731651] [2021-11-07 09:40:14,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:40:14,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:40:14,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:40:14,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:40:14,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:40:14,168 INFO L87 Difference]: Start difference. First operand 142 states and 159 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:16,267 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:18,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:20,599 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:22,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:24,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:27,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:29,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:36,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:40:36,103 INFO L93 Difference]: Finished difference Result 287 states and 313 transitions. [2021-11-07 09:40:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 09:40:36,104 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 73 [2021-11-07 09:40:36,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:40:36,105 INFO L225 Difference]: With dead ends: 287 [2021-11-07 09:40:36,106 INFO L226 Difference]: Without dead ends: 265 [2021-11-07 09:40:36,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 5586.85ms TimeCoverageRelationStatistics Valid=466, Invalid=1696, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 09:40:36,108 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 660 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 64 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15839.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.10ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17036.47ms IncrementalHoareTripleChecker+Time [2021-11-07 09:40:36,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 1010 Invalid, 506 Unknown, 0 Unchecked, 11.10ms Time], IncrementalHoareTripleChecker [64 Valid, 435 Invalid, 7 Unknown, 0 Unchecked, 17036.47ms Time] [2021-11-07 09:40:36,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-07 09:40:36,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 168. [2021-11-07 09:40:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 165 states have (on average 1.1333333333333333) internal successors, (187), 167 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 187 transitions. [2021-11-07 09:40:36,121 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 187 transitions. Word has length 73 [2021-11-07 09:40:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:40:36,122 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 187 transitions. [2021-11-07 09:40:36,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 187 transitions. [2021-11-07 09:40:36,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 09:40:36,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:40:36,123 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] [2021-11-07 09:40:36,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 09:40:36,124 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:40:36,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:40:36,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1988299973, now seen corresponding path program 1 times [2021-11-07 09:40:36,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:40:36,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698790525] [2021-11-07 09:40:36,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:40:36,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:40:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:40:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:40:36,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:40:36,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698790525] [2021-11-07 09:40:36,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698790525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:40:36,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:40:36,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:40:36,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080310999] [2021-11-07 09:40:36,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:40:36,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:40:36,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:40:36,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:40:36,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:40:36,545 INFO L87 Difference]: Start difference. First operand 168 states and 187 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:36,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:40:36,770 INFO L93 Difference]: Finished difference Result 195 states and 216 transitions. [2021-11-07 09:40:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:40:36,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 73 [2021-11-07 09:40:36,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:40:36,772 INFO L225 Difference]: With dead ends: 195 [2021-11-07 09:40:36,772 INFO L226 Difference]: Without dead ends: 168 [2021-11-07 09:40:36,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 158.78ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:40:36,773 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 107 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.23ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128.11ms IncrementalHoareTripleChecker+Time [2021-11-07 09:40:36,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 289 Invalid, 32 Unknown, 0 Unchecked, 1.23ms Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 128.11ms Time] [2021-11-07 09:40:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-07 09:40:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-11-07 09:40:36,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 165 states have (on average 1.1151515151515152) internal successors, (184), 167 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 184 transitions. [2021-11-07 09:40:36,785 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 184 transitions. Word has length 73 [2021-11-07 09:40:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:40:36,786 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 184 transitions. [2021-11-07 09:40:36,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:36,786 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 184 transitions. [2021-11-07 09:40:36,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 09:40:36,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:40:36,788 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] [2021-11-07 09:40:36,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 09:40:36,788 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:40:36,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:40:36,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1650211918, now seen corresponding path program 1 times [2021-11-07 09:40:36,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:40:36,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519426846] [2021-11-07 09:40:36,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:40:36,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:40:36,895 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:40:36,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730586115] [2021-11-07 09:40:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:40:36,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:40:36,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:40:36,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:40:36,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 09:40:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:40:37,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 09:40:37,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:40:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:40:38,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:40:38,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:40:38,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519426846] [2021-11-07 09:40:38,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:40:38,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730586115] [2021-11-07 09:40:38,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730586115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:40:38,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:40:38,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:40:38,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321157944] [2021-11-07 09:40:38,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:40:38,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:40:38,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:40:38,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:40:38,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:40:38,080 INFO L87 Difference]: Start difference. First operand 168 states and 184 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:38,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:40:38,334 INFO L93 Difference]: Finished difference Result 446 states and 484 transitions. [2021-11-07 09:40:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:40:38,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 73 [2021-11-07 09:40:38,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:40:38,336 INFO L225 Difference]: With dead ends: 446 [2021-11-07 09:40:38,336 INFO L226 Difference]: Without dead ends: 303 [2021-11-07 09:40:38,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 148.63ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:40:38,338 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 180 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.76ms IncrementalHoareTripleChecker+Time [2021-11-07 09:40:38,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 589 Invalid, 39 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 153.76ms Time] [2021-11-07 09:40:38,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-07 09:40:38,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 174. [2021-11-07 09:40:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 171 states have (on average 1.1111111111111112) internal successors, (190), 173 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 190 transitions. [2021-11-07 09:40:38,352 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 190 transitions. Word has length 73 [2021-11-07 09:40:38,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:40:38,352 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 190 transitions. [2021-11-07 09:40:38,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:38,353 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 190 transitions. [2021-11-07 09:40:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 09:40:38,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:40:38,353 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] [2021-11-07 09:40:38,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 09:40:38,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 09:40:38,567 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:40:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:40:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1924971532, now seen corresponding path program 1 times [2021-11-07 09:40:38,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:40:38,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929610880] [2021-11-07 09:40:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:40:38,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:40:38,684 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:40:38,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543287260] [2021-11-07 09:40:38,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:40:38,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:40:38,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:40:38,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:40:38,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 09:40:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:40:39,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 09:40:39,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:40:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:40:40,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:40:40,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:40:40,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929610880] [2021-11-07 09:40:40,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:40:40,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543287260] [2021-11-07 09:40:40,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543287260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:40:40,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:40:40,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:40:40,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739897684] [2021-11-07 09:40:40,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:40:40,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:40:40,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:40:40,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:40:40,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:40:40,129 INFO L87 Difference]: Start difference. First operand 174 states and 190 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:41,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:40:41,859 INFO L93 Difference]: Finished difference Result 494 states and 521 transitions. [2021-11-07 09:40:41,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 09:40:41,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 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 73 [2021-11-07 09:40:41,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:40:41,861 INFO L225 Difference]: With dead ends: 494 [2021-11-07 09:40:41,862 INFO L226 Difference]: Without dead ends: 454 [2021-11-07 09:40:41,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 915.49ms TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:40:41,863 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 322 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1006.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.89ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1072.01ms IncrementalHoareTripleChecker+Time [2021-11-07 09:40:41,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 1292 Invalid, 293 Unknown, 0 Unchecked, 7.89ms Time], IncrementalHoareTripleChecker [21 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1072.01ms Time] [2021-11-07 09:40:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-07 09:40:41,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 160. [2021-11-07 09:40:41,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 157 states have (on average 1.1146496815286624) internal successors, (175), 159 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:41,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2021-11-07 09:40:41,878 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 73 [2021-11-07 09:40:41,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:40:41,879 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2021-11-07 09:40:41,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:41,879 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2021-11-07 09:40:41,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 09:40:41,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:40:41,880 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] [2021-11-07 09:40:41,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 09:40:42,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:40:42,108 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:40:42,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:40:42,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2000036865, now seen corresponding path program 1 times [2021-11-07 09:40:42,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:40:42,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944553685] [2021-11-07 09:40:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:40:42,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:40:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:40:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 09:40:44,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:40:44,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944553685] [2021-11-07 09:40:44,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944553685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:40:44,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:40:44,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 09:40:44,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309857524] [2021-11-07 09:40:44,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:40:44,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 09:40:44,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:40:44,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 09:40:44,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:40:44,213 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:40:46,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:48,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:50,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:52,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:55,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:57,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:40:59,324 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:41:05,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:41:05,514 INFO L93 Difference]: Finished difference Result 244 states and 261 transitions. [2021-11-07 09:41:05,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 09:41:05,515 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 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 74 [2021-11-07 09:41:05,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:41:05,516 INFO L225 Difference]: With dead ends: 244 [2021-11-07 09:41:05,516 INFO L226 Difference]: Without dead ends: 222 [2021-11-07 09:41:05,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 5584.39ms TimeCoverageRelationStatistics Valid=324, Invalid=1316, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 09:41:05,517 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 673 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 51 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15481.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.53ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16812.12ms IncrementalHoareTripleChecker+Time [2021-11-07 09:41:05,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 1022 Invalid, 459 Unknown, 0 Unchecked, 8.53ms Time], IncrementalHoareTripleChecker [51 Valid, 401 Invalid, 7 Unknown, 0 Unchecked, 16812.12ms Time] [2021-11-07 09:41:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-07 09:41:05,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 160. [2021-11-07 09:41:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 157 states have (on average 1.1146496815286624) internal successors, (175), 159 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2021-11-07 09:41:05,529 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 74 [2021-11-07 09:41:05,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:41:05,530 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2021-11-07 09:41:05,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:05,530 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2021-11-07 09:41:05,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 09:41:05,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:41:05,531 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] [2021-11-07 09:41:05,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 09:41:05,532 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:41:05,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:41:05,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1314521510, now seen corresponding path program 1 times [2021-11-07 09:41:05,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:41:05,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192225576] [2021-11-07 09:41:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:41:05,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:41:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:41:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:41:06,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:41:06,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192225576] [2021-11-07 09:41:06,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192225576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:41:06,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:41:06,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 09:41:06,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863776179] [2021-11-07 09:41:06,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:41:06,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:41:06,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:41:06,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:41:06,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:41:06,605 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:08,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:41:10,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:41:13,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:41:15,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:41:18,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:41:18,471 INFO L93 Difference]: Finished difference Result 221 states and 239 transitions. [2021-11-07 09:41:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 09:41:18,473 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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 76 [2021-11-07 09:41:18,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:41:18,475 INFO L225 Difference]: With dead ends: 221 [2021-11-07 09:41:18,475 INFO L226 Difference]: Without dead ends: 199 [2021-11-07 09:41:18,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2446.19ms TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:41:18,476 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 132 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9055.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.12ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9890.35ms IncrementalHoareTripleChecker+Time [2021-11-07 09:41:18,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 750 Invalid, 219 Unknown, 0 Unchecked, 4.12ms Time], IncrementalHoareTripleChecker [22 Valid, 193 Invalid, 4 Unknown, 0 Unchecked, 9890.35ms Time] [2021-11-07 09:41:18,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-07 09:41:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 161. [2021-11-07 09:41:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 158 states have (on average 1.120253164556962) internal successors, (177), 160 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:18,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 177 transitions. [2021-11-07 09:41:18,498 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 177 transitions. Word has length 76 [2021-11-07 09:41:18,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:41:18,498 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 177 transitions. [2021-11-07 09:41:18,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:18,499 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 177 transitions. [2021-11-07 09:41:18,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 09:41:18,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:41:18,500 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] [2021-11-07 09:41:18,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 09:41:18,500 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:41:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:41:18,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1205156668, now seen corresponding path program 1 times [2021-11-07 09:41:18,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:41:18,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238365191] [2021-11-07 09:41:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:41:18,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:41:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:41:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:41:19,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:41:19,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238365191] [2021-11-07 09:41:19,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238365191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:41:19,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:41:19,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 09:41:19,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349264408] [2021-11-07 09:41:19,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:41:19,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 09:41:19,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:41:19,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 09:41:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 09:41:19,926 INFO L87 Difference]: Start difference. First operand 161 states and 177 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:19,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:41:19,955 INFO L93 Difference]: Finished difference Result 193 states and 210 transitions. [2021-11-07 09:41:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 09:41:19,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2021-11-07 09:41:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:41:19,957 INFO L225 Difference]: With dead ends: 193 [2021-11-07 09:41:19,957 INFO L226 Difference]: Without dead ends: 162 [2021-11-07 09:41:19,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 09:41:19,960 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.70ms IncrementalHoareTripleChecker+Time [2021-11-07 09:41:19,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 3 Unknown, 0 Unchecked, 0.29ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 17.70ms Time] [2021-11-07 09:41:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-07 09:41:19,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-07 09:41:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 159 states have (on average 1.1132075471698113) internal successors, (177), 161 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:19,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 177 transitions. [2021-11-07 09:41:19,975 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 177 transitions. Word has length 76 [2021-11-07 09:41:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:41:19,976 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 177 transitions. [2021-11-07 09:41:19,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 177 transitions. [2021-11-07 09:41:19,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 09:41:19,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:41:19,977 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] [2021-11-07 09:41:19,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 09:41:19,977 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:41:19,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:41:19,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1882439370, now seen corresponding path program 1 times [2021-11-07 09:41:19,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:41:19,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408066016] [2021-11-07 09:41:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:41:19,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:41:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:41:22,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 09:41:22,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:41:22,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408066016] [2021-11-07 09:41:22,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408066016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:41:22,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:41:22,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 09:41:22,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529601262] [2021-11-07 09:41:22,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:41:22,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 09:41:22,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:41:22,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 09:41:22,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:41:22,523 INFO L87 Difference]: Start difference. First operand 162 states and 177 transitions. Second operand has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:24,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:41:26,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:41:28,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:41:31,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:41:33,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:41:39,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:41:39,798 INFO L93 Difference]: Finished difference Result 185 states and 200 transitions. [2021-11-07 09:41:39,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 09:41:39,800 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 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 77 [2021-11-07 09:41:39,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:41:39,801 INFO L225 Difference]: With dead ends: 185 [2021-11-07 09:41:39,801 INFO L226 Difference]: Without dead ends: 163 [2021-11-07 09:41:39,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 6208.73ms TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 09:41:39,802 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 256 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 35 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11561.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.49ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12504.73ms IncrementalHoareTripleChecker+Time [2021-11-07 09:41:39,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 878 Invalid, 364 Unknown, 0 Unchecked, 6.49ms Time], IncrementalHoareTripleChecker [35 Valid, 324 Invalid, 5 Unknown, 0 Unchecked, 12504.73ms Time] [2021-11-07 09:41:39,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-07 09:41:39,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 124. [2021-11-07 09:41:39,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1074380165289257) internal successors, (134), 123 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:39,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-11-07 09:41:39,818 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 77 [2021-11-07 09:41:39,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:41:39,819 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-11-07 09:41:39,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:39,819 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-11-07 09:41:39,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 09:41:39,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:41:39,819 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] [2021-11-07 09:41:39,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 09:41:39,820 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:41:39,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:41:39,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1721439042, now seen corresponding path program 1 times [2021-11-07 09:41:39,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:41:39,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956283220] [2021-11-07 09:41:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:41:39,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:41:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:41:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:41:41,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:41:41,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956283220] [2021-11-07 09:41:41,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956283220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:41:41,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85867975] [2021-11-07 09:41:41,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:41:41,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:41:41,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:41:41,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:41:41,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 09:41:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:41:42,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 09:41:42,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:41:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 09:41:42,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:41:42,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85867975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:41:42,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 09:41:42,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2021-11-07 09:41:42,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782788647] [2021-11-07 09:41:42,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:41:42,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:41:42,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:41:42,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:41:42,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:41:42,958 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:43,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:41:43,416 INFO L93 Difference]: Finished difference Result 222 states and 238 transitions. [2021-11-07 09:41:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:41:43,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2021-11-07 09:41:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:41:43,418 INFO L225 Difference]: With dead ends: 222 [2021-11-07 09:41:43,418 INFO L226 Difference]: Without dead ends: 124 [2021-11-07 09:41:43,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 493.03ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:41:43,419 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 233 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 262.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 281.11ms IncrementalHoareTripleChecker+Time [2021-11-07 09:41:43,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 307 Invalid, 56 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 281.11ms Time] [2021-11-07 09:41:43,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-07 09:41:43,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2021-11-07 09:41:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.0825688073394495) internal successors, (118), 111 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 118 transitions. [2021-11-07 09:41:43,432 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 118 transitions. Word has length 77 [2021-11-07 09:41:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:41:43,433 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 118 transitions. [2021-11-07 09:41:43,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:41:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 118 transitions. [2021-11-07 09:41:43,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 09:41:43,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:41:43,434 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] [2021-11-07 09:41:43,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 09:41:43,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 09:41:43,648 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:41:43,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:41:43,648 INFO L85 PathProgramCache]: Analyzing trace with hash -931199318, now seen corresponding path program 1 times [2021-11-07 09:41:43,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:41:43,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072122455] [2021-11-07 09:41:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:41:43,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:41:43,725 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:41:43,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409905307] [2021-11-07 09:41:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:41:43,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:41:43,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:41:43,728 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:41:43,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 09:43:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:29,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2846 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 09:43:29,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:43:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:43:30,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:43:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:43:30,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:43:30,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072122455] [2021-11-07 09:43:30,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:43:30,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409905307] [2021-11-07 09:43:30,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409905307] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:43:30,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 09:43:30,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-07 09:43:30,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193347601] [2021-11-07 09:43:30,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 09:43:30,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:43:30,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:43:30,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:43:30,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:43:30,463 INFO L87 Difference]: Start difference. First operand 112 states and 118 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:30,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:43:30,614 INFO L93 Difference]: Finished difference Result 146 states and 155 transitions. [2021-11-07 09:43:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:43:30,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 83 [2021-11-07 09:43:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:43:30,616 INFO L225 Difference]: With dead ends: 146 [2021-11-07 09:43:30,616 INFO L226 Difference]: Without dead ends: 115 [2021-11-07 09:43:30,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 217.54ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:43:30,617 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 31 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.46ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.22ms IncrementalHoareTripleChecker+Time [2021-11-07 09:43:30,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 313 Invalid, 13 Unknown, 0 Unchecked, 0.46ms Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 52.22ms Time] [2021-11-07 09:43:30,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-07 09:43:30,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-11-07 09:43:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 112 states have (on average 1.0803571428571428) internal successors, (121), 114 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:30,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 121 transitions. [2021-11-07 09:43:30,628 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 121 transitions. Word has length 83 [2021-11-07 09:43:30,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:43:30,629 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 121 transitions. [2021-11-07 09:43:30,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:30,629 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 121 transitions. [2021-11-07 09:43:30,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 09:43:30,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:43:30,630 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:43:30,843 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2021-11-07 09:43:30,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2021-11-07 09:43:30,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 09:43:30,886 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:43:30,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:43:30,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1432689232, now seen corresponding path program 2 times [2021-11-07 09:43:30,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:43:30,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66288036] [2021-11-07 09:43:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:30,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:43:30,959 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:43:30,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777911816] [2021-11-07 09:43:30,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 09:43:30,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:43:30,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:43:30,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:43:30,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Killed by 15