./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_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 a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 13:05:36,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 13:05:36,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 13:05:36,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 13:05:36,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 13:05:36,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 13:05:36,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 13:05:36,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 13:05:36,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 13:05:36,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 13:05:36,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 13:05:36,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 13:05:36,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 13:05:36,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 13:05:36,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 13:05:36,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 13:05:36,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 13:05:36,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 13:05:36,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 13:05:36,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 13:05:36,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 13:05:36,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 13:05:36,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 13:05:36,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 13:05:36,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 13:05:36,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 13:05:36,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 13:05:36,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 13:05:36,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 13:05:36,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 13:05:36,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 13:05:36,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 13:05:36,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 13:05:36,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 13:05:36,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 13:05:36,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 13:05:36,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 13:05:36,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 13:05:36,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 13:05:36,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 13:05:36,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 13:05:36,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 13:05:36,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 13:05:36,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 13:05:36,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 13:05:36,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 13:05:36,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 13:05:36,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 13:05:36,641 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 13:05:36,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 13:05:36,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 13:05:36,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 13:05:36,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 13:05:36,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 13:05:36,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 13:05:36,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 13:05:36,643 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 13:05:36,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 13:05:36,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 13:05:36,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 13:05:36,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 13:05:36,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:05:36,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 13:05:36,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 13:05:36,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 13:05:36,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 13:05:36,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 13:05:36,645 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 13:05:36,645 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 13:05:36,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 13:05:36,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 13:05:36,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f [2021-11-05 13:05:36,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 13:05:37,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 13:05:37,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 13:05:37,013 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 13:05:37,014 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 13:05:37,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2021-11-05 13:05:37,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3775a143/003ad84586234e2fb67ac7fee186187c/FLAGd7162ca50 [2021-11-05 13:05:37,814 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 13:05:37,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2021-11-05 13:05:37,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3775a143/003ad84586234e2fb67ac7fee186187c/FLAGd7162ca50 [2021-11-05 13:05:37,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3775a143/003ad84586234e2fb67ac7fee186187c [2021-11-05 13:05:37,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 13:05:37,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 13:05:37,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 13:05:37,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 13:05:37,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 13:05:37,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:05:37" (1/1) ... [2021-11-05 13:05:37,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e57cfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:37, skipping insertion in model container [2021-11-05 13:05:37,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:05:37" (1/1) ... [2021-11-05 13:05:37,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 13:05:38,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 13:05:38,376 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_init_bounded_harness.i[4501,4514] [2021-11-05 13:05:38,388 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_init_bounded_harness.i[4561,4574] [2021-11-05 13:05:38,427 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:05:38,437 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:05:39,336 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:39,337 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:39,338 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:39,339 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:39,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:39,351 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:39,352 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:39,354 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:39,354 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:39,356 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:39,357 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:39,358 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:39,358 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:39,909 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:05:39,910 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:05:39,911 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:05:39,912 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:05:39,913 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:05:39,914 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:05:39,914 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:05:39,915 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:05:39,922 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:05:39,922 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:05:40,132 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:05:40,443 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,446 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,496 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,498 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,508 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,508 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,530 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,534 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,536 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,537 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,537 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,538 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,538 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:05:40,639 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 13:05:40,665 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_init_bounded_harness.i[4501,4514] [2021-11-05 13:05:40,666 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_init_bounded_harness.i[4561,4574] [2021-11-05 13:05:40,667 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:05:40,668 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:05:40,715 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,716 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,716 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,716 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,717 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,727 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,729 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,731 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,731 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,732 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,734 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,734 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,735 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,788 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:05:40,789 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:05:40,789 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:05:40,790 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:05:40,791 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:05:40,791 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:05:40,791 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:05:40,792 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:05:40,792 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:05:40,793 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:05:40,819 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:05:40,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,938 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,939 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,943 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,957 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,959 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,960 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,960 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,960 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,961 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:05:40,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:05:41,331 INFO L208 MainTranslator]: Completed translation [2021-11-05 13:05:41,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:41 WrapperNode [2021-11-05 13:05:41,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 13:05:41,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 13:05:41,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 13:05:41,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 13:05:41,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:41" (1/1) ... [2021-11-05 13:05:41,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:41" (1/1) ... [2021-11-05 13:05:41,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 13:05:41,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 13:05:41,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 13:05:41,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 13:05:41,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:41" (1/1) ... [2021-11-05 13:05:41,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:41" (1/1) ... [2021-11-05 13:05:41,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:41" (1/1) ... [2021-11-05 13:05:41,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:41" (1/1) ... [2021-11-05 13:05:41,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:41" (1/1) ... [2021-11-05 13:05:41,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:41" (1/1) ... [2021-11-05 13:05:41,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:41" (1/1) ... [2021-11-05 13:05:41,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 13:05:41,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 13:05:41,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 13:05:41,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 13:05:41,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:41" (1/1) ... [2021-11-05 13:05:41,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:05:41,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:05:41,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 13:05:41,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 13:05:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-05 13:05:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 13:05:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 13:05:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 13:05:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 13:05:41,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 13:05:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-05 13:05:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 13:05:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 13:05:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 13:05:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 13:05:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 13:05:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-05 13:05:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 13:05:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:05:50,900 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !true; [2021-11-05 13:05:50,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:05:50,907 INFO L299 CfgBuilder]: Removed 130 assume(true) statements. [2021-11-05 13:05:50,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:05:50 BoogieIcfgContainer [2021-11-05 13:05:50,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:05:50,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:05:50,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:05:50,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:05:50,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:05:37" (1/3) ... [2021-11-05 13:05:50,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b5b716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:05:50, skipping insertion in model container [2021-11-05 13:05:50,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:05:41" (2/3) ... [2021-11-05 13:05:50,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b5b716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:05:50, skipping insertion in model container [2021-11-05 13:05:50,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:05:50" (3/3) ... [2021-11-05 13:05:50,921 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_bounded_harness.i [2021-11-05 13:05:50,927 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:05:50,928 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-05 13:05:50,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:05:50,988 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 13:05:50,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-05 13:05:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 120 states have (on average 1.375) internal successors, (165), 123 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:51,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-05 13:05:51,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:51,028 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] [2021-11-05 13:05:51,029 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:51,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash -227722536, now seen corresponding path program 1 times [2021-11-05 13:05:51,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:51,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169532320] [2021-11-05 13:05:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:51,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:51,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:51,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169532320] [2021-11-05 13:05:51,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169532320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:51,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:51,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:05:51,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850755093] [2021-11-05 13:05:51,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:51,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:05:51,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:51,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:05:51,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:05:51,714 INFO L87 Difference]: Start difference. First operand has 124 states, 120 states have (on average 1.375) internal successors, (165), 123 states have internal predecessors, (165), 0 states have call successors, (0), 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 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:51,774 INFO L93 Difference]: Finished difference Result 243 states and 324 transitions. [2021-11-05 13:05:51,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:05:51,776 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-05 13:05:51,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:51,786 INFO L225 Difference]: With dead ends: 243 [2021-11-05 13:05:51,786 INFO L226 Difference]: Without dead ends: 116 [2021-11-05 13:05:51,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.06ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:05:51,798 INFO L933 BasicCegarLoop]: 148 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, 148 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:51,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 5.22ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:05:51,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-05 13:05:51,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-05 13:05:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 115 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2021-11-05 13:05:51,847 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 139 transitions. Word has length 33 [2021-11-05 13:05:51,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:51,848 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 139 transitions. [2021-11-05 13:05:51,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:51,849 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 139 transitions. [2021-11-05 13:05:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-05 13:05:51,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:51,852 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] [2021-11-05 13:05:51,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:05:51,852 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:51,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:51,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1424964684, now seen corresponding path program 1 times [2021-11-05 13:05:51,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:51,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50909616] [2021-11-05 13:05:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:51,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:52,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:52,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50909616] [2021-11-05 13:05:52,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50909616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:52,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:52,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:05:52,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624314289] [2021-11-05 13:05:52,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:52,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:05:52,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:52,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:05:52,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:05:52,230 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:52,378 INFO L93 Difference]: Finished difference Result 298 states and 359 transitions. [2021-11-05 13:05:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:05:52,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-05 13:05:52,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:52,380 INFO L225 Difference]: With dead ends: 298 [2021-11-05 13:05:52,380 INFO L226 Difference]: Without dead ends: 209 [2021-11-05 13:05:52,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:05:52,382 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 111 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.77ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.31ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:52,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 406 Invalid, 11 Unknown, 0 Unchecked, 3.77ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 86.31ms Time] [2021-11-05 13:05:52,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-05 13:05:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 118. [2021-11-05 13:05:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 115 states have (on average 1.2260869565217392) internal successors, (141), 117 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:52,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2021-11-05 13:05:52,393 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 141 transitions. Word has length 33 [2021-11-05 13:05:52,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:52,393 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 141 transitions. [2021-11-05 13:05:52,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:52,394 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 141 transitions. [2021-11-05 13:05:52,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-05 13:05:52,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:52,395 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] [2021-11-05 13:05:52,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 13:05:52,395 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:52,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1779813818, now seen corresponding path program 1 times [2021-11-05 13:05:52,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:52,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578109974] [2021-11-05 13:05:52,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:52,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:52,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:52,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578109974] [2021-11-05 13:05:52,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578109974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:52,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:52,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:05:52,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125562910] [2021-11-05 13:05:52,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:52,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:05:52,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:05:52,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:05:52,791 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:52,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:52,917 INFO L93 Difference]: Finished difference Result 228 states and 271 transitions. [2021-11-05 13:05:52,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:05:52,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-11-05 13:05:52,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:52,920 INFO L225 Difference]: With dead ends: 228 [2021-11-05 13:05:52,920 INFO L226 Difference]: Without dead ends: 207 [2021-11-05 13:05:52,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.47ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:05:52,921 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 105 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.34ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.62ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:52,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 453 Invalid, 10 Unknown, 0 Unchecked, 2.34ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 83.62ms Time] [2021-11-05 13:05:52,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-05 13:05:52,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 120. [2021-11-05 13:05:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 117 states have (on average 1.2222222222222223) internal successors, (143), 119 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:52,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2021-11-05 13:05:52,932 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 35 [2021-11-05 13:05:52,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:52,932 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2021-11-05 13:05:52,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:52,932 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2021-11-05 13:05:52,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-05 13:05:52,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:52,933 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] [2021-11-05 13:05:52,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 13:05:52,934 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:52,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:52,935 INFO L85 PathProgramCache]: Analyzing trace with hash 194776032, now seen corresponding path program 1 times [2021-11-05 13:05:52,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:52,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689537120] [2021-11-05 13:05:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:52,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:53,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:53,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689537120] [2021-11-05 13:05:53,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689537120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:53,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:53,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:05:53,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777434342] [2021-11-05 13:05:53,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:53,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:05:53,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:53,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:05:53,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:05:53,235 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:53,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:53,317 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2021-11-05 13:05:53,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:05:53,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-05 13:05:53,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:53,319 INFO L225 Difference]: With dead ends: 141 [2021-11-05 13:05:53,319 INFO L226 Difference]: Without dead ends: 120 [2021-11-05 13:05:53,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:05:53,320 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 1 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.10ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.97ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:53,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 408 Invalid, 8 Unknown, 0 Unchecked, 1.10ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 40.97ms Time] [2021-11-05 13:05:53,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-05 13:05:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2021-11-05 13:05:53,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 115 states have (on average 1.208695652173913) internal successors, (139), 117 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2021-11-05 13:05:53,329 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 36 [2021-11-05 13:05:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:53,330 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2021-11-05 13:05:53,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2021-11-05 13:05:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 13:05:53,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:53,331 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] [2021-11-05 13:05:53,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 13:05:53,332 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:53,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:53,332 INFO L85 PathProgramCache]: Analyzing trace with hash -150404056, now seen corresponding path program 1 times [2021-11-05 13:05:53,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:53,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138800337] [2021-11-05 13:05:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:53,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:53,437 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:05:53,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787431312] [2021-11-05 13:05:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:53,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:05:53,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:05:53,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:05:53,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:05:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:54,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 13:05:54,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:05:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:54,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:05:54,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:54,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138800337] [2021-11-05 13:05:54,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:05:54,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787431312] [2021-11-05 13:05:54,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787431312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:54,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:54,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:05:54,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945851981] [2021-11-05 13:05:54,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:54,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:05:54,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:54,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:05:54,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:05:54,664 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:54,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:54,907 INFO L93 Difference]: Finished difference Result 266 states and 312 transitions. [2021-11-05 13:05:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:05:54,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-05 13:05:54,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:54,910 INFO L225 Difference]: With dead ends: 266 [2021-11-05 13:05:54,910 INFO L226 Difference]: Without dead ends: 193 [2021-11-05 13:05:54,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 135.19ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:05:54,911 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 165 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 145.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.36ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 161.04ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:54,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 611 Invalid, 42 Unknown, 0 Unchecked, 2.36ms Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 161.04ms Time] [2021-11-05 13:05:54,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-05 13:05:54,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 121. [2021-11-05 13:05:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 120 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:54,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2021-11-05 13:05:54,919 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 43 [2021-11-05 13:05:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:54,920 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2021-11-05 13:05:54,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:54,920 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2021-11-05 13:05:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 13:05:54,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:54,921 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] [2021-11-05 13:05:54,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 13:05:55,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:05:55,146 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:55,147 INFO L85 PathProgramCache]: Analyzing trace with hash -393010388, now seen corresponding path program 1 times [2021-11-05 13:05:55,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:55,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563902808] [2021-11-05 13:05:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:55,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:55,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:55,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563902808] [2021-11-05 13:05:55,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563902808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:55,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:55,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:05:55,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324362333] [2021-11-05 13:05:55,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:55,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:05:55,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:55,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:05:55,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:05:55,699 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:05:55,820 INFO L93 Difference]: Finished difference Result 320 states and 378 transitions. [2021-11-05 13:05:55,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:05:55,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-05 13:05:55,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:05:55,822 INFO L225 Difference]: With dead ends: 320 [2021-11-05 13:05:55,822 INFO L226 Difference]: Without dead ends: 220 [2021-11-05 13:05:55,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.05ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:05:55,823 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 113 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.97ms IncrementalHoareTripleChecker+Time [2021-11-05 13:05:55,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 619 Invalid, 13 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 83.97ms Time] [2021-11-05 13:05:55,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-05 13:05:55,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 124. [2021-11-05 13:05:55,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1983471074380165) internal successors, (145), 123 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2021-11-05 13:05:55,830 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 45 [2021-11-05 13:05:55,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:05:55,830 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2021-11-05 13:05:55,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:55,831 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2021-11-05 13:05:55,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 13:05:55,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:05:55,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:05:55,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 13:05:55,832 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:05:55,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:05:55,833 INFO L85 PathProgramCache]: Analyzing trace with hash -902483478, now seen corresponding path program 1 times [2021-11-05 13:05:55,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:05:55,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229429322] [2021-11-05 13:05:55,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:05:55,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:05:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:05:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:05:56,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:05:56,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229429322] [2021-11-05 13:05:56,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229429322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:05:56,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:05:56,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:05:56,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159739436] [2021-11-05 13:05:56,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:05:56,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:05:56,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:05:56,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:05:56,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:05:56,447 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:05:58,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:00,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:02,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:04,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:04,860 INFO L93 Difference]: Finished difference Result 157 states and 182 transitions. [2021-11-05 13:06:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 13:06:04,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-05 13:06:04,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:04,861 INFO L225 Difference]: With dead ends: 157 [2021-11-05 13:06:04,862 INFO L226 Difference]: Without dead ends: 130 [2021-11-05 13:06:04,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 569.53ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:06:04,863 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 83 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7549.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.94ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8027.63ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:04,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 659 Invalid, 102 Unknown, 0 Unchecked, 3.94ms Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 3 Unknown, 0 Unchecked, 8027.63ms Time] [2021-11-05 13:06:04,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-05 13:06:04,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2021-11-05 13:06:04,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1951219512195121) internal successors, (147), 125 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2021-11-05 13:06:04,868 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 45 [2021-11-05 13:06:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:04,868 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2021-11-05 13:06:04,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2021-11-05 13:06:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 13:06:04,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:04,869 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] [2021-11-05 13:06:04,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 13:06:04,870 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:06:04,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:04,870 INFO L85 PathProgramCache]: Analyzing trace with hash 872523884, now seen corresponding path program 1 times [2021-11-05 13:06:04,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:04,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135036946] [2021-11-05 13:06:04,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:04,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:06:05,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:05,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135036946] [2021-11-05 13:06:05,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135036946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:05,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:06:05,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:06:05,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438075222] [2021-11-05 13:06:05,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:05,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:06:05,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:05,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:06:05,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:06:05,246 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:05,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:05,341 INFO L93 Difference]: Finished difference Result 156 states and 180 transitions. [2021-11-05 13:06:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:06:05,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-05 13:06:05,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:05,343 INFO L225 Difference]: With dead ends: 156 [2021-11-05 13:06:05,343 INFO L226 Difference]: Without dead ends: 124 [2021-11-05 13:06:05,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:06:05,344 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 97 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.98ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.59ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:05,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 265 Invalid, 13 Unknown, 0 Unchecked, 0.98ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 53.59ms Time] [2021-11-05 13:06:05,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-05 13:06:05,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-11-05 13:06:05,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1818181818181819) internal successors, (143), 123 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:05,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2021-11-05 13:06:05,351 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 45 [2021-11-05 13:06:05,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:05,351 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2021-11-05 13:06:05,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2021-11-05 13:06:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-05 13:06:05,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:05,352 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] [2021-11-05 13:06:05,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 13:06:05,353 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:06:05,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:05,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1167810907, now seen corresponding path program 1 times [2021-11-05 13:06:05,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:05,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60965734] [2021-11-05 13:06:05,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:05,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:06:05,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:05,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60965734] [2021-11-05 13:06:05,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60965734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:05,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:06:05,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:06:05,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431094295] [2021-11-05 13:06:05,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:05,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:06:05,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:05,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:06:05,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:06:05,761 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:07,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:09,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:11,066 INFO L93 Difference]: Finished difference Result 153 states and 174 transitions. [2021-11-05 13:06:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:06:11,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-05 13:06:11,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:11,067 INFO L225 Difference]: With dead ends: 153 [2021-11-05 13:06:11,067 INFO L226 Difference]: Without dead ends: 125 [2021-11-05 13:06:11,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 348.84ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:06:11,068 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 46 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4765.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5076.25ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:11,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 424 Invalid, 61 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 2 Unknown, 0 Unchecked, 5076.25ms Time] [2021-11-05 13:06:11,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-05 13:06:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-11-05 13:06:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.165289256198347) internal successors, (141), 123 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2021-11-05 13:06:11,074 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 47 [2021-11-05 13:06:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:11,074 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2021-11-05 13:06:11,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2021-11-05 13:06:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 13:06:11,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:11,075 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] [2021-11-05 13:06:11,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 13:06:11,076 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:06:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:11,077 INFO L85 PathProgramCache]: Analyzing trace with hash -128406987, now seen corresponding path program 1 times [2021-11-05 13:06:11,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:11,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011973013] [2021-11-05 13:06:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:11,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:06:11,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:11,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011973013] [2021-11-05 13:06:11,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011973013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:11,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:06:11,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:06:11,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140775636] [2021-11-05 13:06:11,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:11,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:06:11,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:11,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:06:11,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:06:11,658 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:13,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:15,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:06:17,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:17,513 INFO L93 Difference]: Finished difference Result 164 states and 183 transitions. [2021-11-05 13:06:17,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:06:17,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-05 13:06:17,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:17,514 INFO L225 Difference]: With dead ends: 164 [2021-11-05 13:06:17,515 INFO L226 Difference]: Without dead ends: 128 [2021-11-05 13:06:17,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 462.84ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:06:17,516 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 14 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5248.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.34ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5559.56ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:17,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 708 Invalid, 91 Unknown, 0 Unchecked, 2.34ms Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 2 Unknown, 0 Unchecked, 5559.56ms Time] [2021-11-05 13:06:17,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-05 13:06:17,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2021-11-05 13:06:17,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.146341463414634) internal successors, (141), 125 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2021-11-05 13:06:17,521 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 48 [2021-11-05 13:06:17,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:17,522 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2021-11-05 13:06:17,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2021-11-05 13:06:17,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-05 13:06:17,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:17,523 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] [2021-11-05 13:06:17,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 13:06:17,523 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:06:17,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:17,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1494937261, now seen corresponding path program 1 times [2021-11-05 13:06:17,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:17,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328168709] [2021-11-05 13:06:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:17,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:17,623 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:06:17,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600815400] [2021-11-05 13:06:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:17,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:17,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:06:17,628 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:06:17,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 13:06:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:18,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 13:06:18,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:06:18,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:06:18,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:06:18,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:18,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328168709] [2021-11-05 13:06:18,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:06:18,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600815400] [2021-11-05 13:06:18,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600815400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:18,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:06:18,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:06:18,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579067650] [2021-11-05 13:06:18,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:18,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:06:18,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:18,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:06:18,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:06:18,615 INFO L87 Difference]: Start difference. First operand 126 states and 141 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:18,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:18,680 INFO L93 Difference]: Finished difference Result 201 states and 222 transitions. [2021-11-05 13:06:18,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:06:18,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-05 13:06:18,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:18,682 INFO L225 Difference]: With dead ends: 201 [2021-11-05 13:06:18,682 INFO L226 Difference]: Without dead ends: 126 [2021-11-05 13:06:18,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:06:18,683 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 1 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.47ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:18,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 384 Invalid, 8 Unknown, 0 Unchecked, 1.83ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 28.47ms Time] [2021-11-05 13:06:18,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-05 13:06:18,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2021-11-05 13:06:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.1333333333333333) internal successors, (136), 122 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2021-11-05 13:06:18,695 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 61 [2021-11-05 13:06:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:18,696 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2021-11-05 13:06:18,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2021-11-05 13:06:18,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 13:06:18,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:18,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:06:18,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-05 13:06:18,903 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 [2021-11-05 13:06:18,904 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:06:18,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:18,904 INFO L85 PathProgramCache]: Analyzing trace with hash -810018571, now seen corresponding path program 1 times [2021-11-05 13:06:18,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:18,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438154501] [2021-11-05 13:06:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:18,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:19,000 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:06:19,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499674828] [2021-11-05 13:06:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:19,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:19,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:06:19,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:06:19,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 13:06:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:19,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 13:06:19,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:06:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:06:20,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:06:20,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:20,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438154501] [2021-11-05 13:06:20,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:06:20,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499674828] [2021-11-05 13:06:20,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499674828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:20,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:06:20,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:06:20,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249584787] [2021-11-05 13:06:20,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:20,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:06:20,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:20,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:06:20,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:06:20,041 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:20,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:20,252 INFO L93 Difference]: Finished difference Result 240 states and 259 transitions. [2021-11-05 13:06:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:06:20,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-05 13:06:20,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:20,254 INFO L225 Difference]: With dead ends: 240 [2021-11-05 13:06:20,254 INFO L226 Difference]: Without dead ends: 200 [2021-11-05 13:06:20,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 115.21ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:06:20,255 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 149 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.00ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134.08ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:20,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 557 Invalid, 40 Unknown, 0 Unchecked, 2.00ms Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 134.08ms Time] [2021-11-05 13:06:20,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-05 13:06:20,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 126. [2021-11-05 13:06:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1300813008130082) internal successors, (139), 125 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:20,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 139 transitions. [2021-11-05 13:06:20,261 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 139 transitions. Word has length 64 [2021-11-05 13:06:20,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:20,262 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 139 transitions. [2021-11-05 13:06:20,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:20,262 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 139 transitions. [2021-11-05 13:06:20,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 13:06:20,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:20,263 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] [2021-11-05 13:06:20,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 13:06:20,479 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 [2021-11-05 13:06:20,480 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:06:20,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:20,480 INFO L85 PathProgramCache]: Analyzing trace with hash 536829777, now seen corresponding path program 1 times [2021-11-05 13:06:20,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:20,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418739091] [2021-11-05 13:06:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:20,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:20,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:06:20,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956232932] [2021-11-05 13:06:20,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:20,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:20,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:06:20,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:06:20,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 13:06:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:21,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 2732 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 13:06:21,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:06:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:06:21,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:06:21,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:21,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418739091] [2021-11-05 13:06:21,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:06:21,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956232932] [2021-11-05 13:06:21,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956232932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:21,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:06:21,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:06:21,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549064534] [2021-11-05 13:06:21,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:21,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:06:21,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:21,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:06:21,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:06:21,644 INFO L87 Difference]: Start difference. First operand 126 states and 139 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:21,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:21,925 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2021-11-05 13:06:21,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:06:21,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-05 13:06:21,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:21,937 INFO L225 Difference]: With dead ends: 166 [2021-11-05 13:06:21,937 INFO L226 Difference]: Without dead ends: 126 [2021-11-05 13:06:21,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 98.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:06:21,939 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 1 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 231.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 233.81ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:21,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 379 Invalid, 7 Unknown, 0 Unchecked, 0.80ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 233.81ms Time] [2021-11-05 13:06:21,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-05 13:06:21,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2021-11-05 13:06:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.125) internal successors, (135), 122 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2021-11-05 13:06:21,944 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 66 [2021-11-05 13:06:21,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:21,944 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2021-11-05 13:06:21,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:21,945 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2021-11-05 13:06:21,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-05 13:06:21,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:21,945 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] [2021-11-05 13:06:21,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 13:06:22,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:22,175 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:06:22,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:22,176 INFO L85 PathProgramCache]: Analyzing trace with hash -165392724, now seen corresponding path program 1 times [2021-11-05 13:06:22,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:22,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922787521] [2021-11-05 13:06:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:22,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:22,259 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:06:22,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880147193] [2021-11-05 13:06:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:22,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:22,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:06:22,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:06:22,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 13:06:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:22,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-05 13:06:22,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:06:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:06:23,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:06:23,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:23,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922787521] [2021-11-05 13:06:23,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:06:23,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880147193] [2021-11-05 13:06:23,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880147193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:23,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:06:23,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:06:23,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845516266] [2021-11-05 13:06:23,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:23,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:06:23,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:23,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:06:23,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:06:23,359 INFO L87 Difference]: Start difference. First operand 123 states and 135 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) [2021-11-05 13:06:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:23,491 INFO L93 Difference]: Finished difference Result 251 states and 267 transitions. [2021-11-05 13:06:23,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:06:23,492 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 [2021-11-05 13:06:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:23,494 INFO L225 Difference]: With dead ends: 251 [2021-11-05 13:06:23,495 INFO L226 Difference]: Without dead ends: 210 [2021-11-05 13:06:23,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 157.49ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:06:23,497 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 129 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.27ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:23,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 529 Invalid, 20 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 70.27ms Time] [2021-11-05 13:06:23,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-05 13:06:23,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 126. [2021-11-05 13:06:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1219512195121952) internal successors, (138), 125 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) [2021-11-05 13:06:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-11-05 13:06:23,516 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 70 [2021-11-05 13:06:23,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:23,516 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-11-05 13:06:23,517 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) [2021-11-05 13:06:23,517 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-11-05 13:06:23,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-05 13:06:23,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:23,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:06:23,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 13:06:23,731 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,SelfDestructingSolverStorable13 [2021-11-05 13:06:23,732 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:06:23,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:23,732 INFO L85 PathProgramCache]: Analyzing trace with hash 799465288, now seen corresponding path program 1 times [2021-11-05 13:06:23,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:23,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086678650] [2021-11-05 13:06:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:23,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:23,821 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:06:23,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316034028] [2021-11-05 13:06:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:23,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:23,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:06:23,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:06:23,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 13:06:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:24,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 2765 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-05 13:06:24,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:06:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:06:24,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:06:24,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:24,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086678650] [2021-11-05 13:06:24,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:06:24,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316034028] [2021-11-05 13:06:24,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316034028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:24,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:06:24,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:06:24,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784201869] [2021-11-05 13:06:24,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:24,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:06:24,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:24,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:06:24,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:06:24,864 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:25,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:25,239 INFO L93 Difference]: Finished difference Result 167 states and 180 transitions. [2021-11-05 13:06:25,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:06:25,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-05 13:06:25,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:25,251 INFO L225 Difference]: With dead ends: 167 [2021-11-05 13:06:25,251 INFO L226 Difference]: Without dead ends: 121 [2021-11-05 13:06:25,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 188.07ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:06:25,252 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 3 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 272.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 275.28ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:25,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 496 Invalid, 13 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 275.28ms Time] [2021-11-05 13:06:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-05 13:06:25,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-11-05 13:06:25,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.1101694915254237) internal successors, (131), 120 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:25,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2021-11-05 13:06:25,257 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 72 [2021-11-05 13:06:25,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:25,258 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2021-11-05 13:06:25,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2021-11-05 13:06:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-05 13:06:25,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:25,259 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] [2021-11-05 13:06:25,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-05 13:06:25,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-05 13:06:25,472 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:06:25,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:25,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1306943225, now seen corresponding path program 1 times [2021-11-05 13:06:25,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:25,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049321977] [2021-11-05 13:06:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:25,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:25,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:06:25,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592389807] [2021-11-05 13:06:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:25,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:25,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:06:25,557 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:06:25,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 13:06:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:06:26,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 2872 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-05 13:06:26,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:06:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:06:26,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:06:26,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:06:26,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049321977] [2021-11-05 13:06:26,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:06:26,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592389807] [2021-11-05 13:06:26,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592389807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:06:26,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:06:26,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:06:26,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179444898] [2021-11-05 13:06:26,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:06:26,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:06:26,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:06:26,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:06:26,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:06:26,644 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:26,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:06:26,732 INFO L93 Difference]: Finished difference Result 305 states and 327 transitions. [2021-11-05 13:06:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:06:26,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-05 13:06:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:06:26,734 INFO L225 Difference]: With dead ends: 305 [2021-11-05 13:06:26,735 INFO L226 Difference]: Without dead ends: 212 [2021-11-05 13:06:26,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:06:26,737 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 205 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.39ms IncrementalHoareTripleChecker+Time [2021-11-05 13:06:26,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 348 Invalid, 8 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 48.39ms Time] [2021-11-05 13:06:26,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-05 13:06:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 121. [2021-11-05 13:06:26,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.1016949152542372) internal successors, (130), 120 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:26,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2021-11-05 13:06:26,744 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 80 [2021-11-05 13:06:26,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:06:26,745 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2021-11-05 13:06:26,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:06:26,745 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2021-11-05 13:06:26,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 13:06:26,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:06:26,746 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] [2021-11-05 13:06:26,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-05 13:06:26,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:26,960 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 13:06:26,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:06:26,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1199107289, now seen corresponding path program 1 times [2021-11-05 13:06:26,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:06:26,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050552995] [2021-11-05 13:06:26,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:26,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:06:27,068 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:06:27,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066691138] [2021-11-05 13:06:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:06:27,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:06:27,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:06:27,069 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:06:27,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Killed by 15