./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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_unbounded_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 edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 13:31:48,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 13:31:48,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 13:31:48,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 13:31:48,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 13:31:48,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 13:31:48,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 13:31:48,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 13:31:48,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 13:31:48,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 13:31:48,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 13:31:48,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 13:31:48,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 13:31:48,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 13:31:48,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 13:31:48,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 13:31:48,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 13:31:48,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 13:31:48,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 13:31:48,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 13:31:48,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 13:31:48,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 13:31:48,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 13:31:48,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 13:31:48,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 13:31:48,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 13:31:48,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 13:31:48,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 13:31:48,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 13:31:48,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 13:31:48,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 13:31:48,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 13:31:48,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 13:31:48,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 13:31:48,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 13:31:48,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 13:31:48,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 13:31:48,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 13:31:48,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 13:31:48,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 13:31:48,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 13:31:48,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 13:31:48,784 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 13:31:48,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 13:31:48,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 13:31:48,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 13:31:48,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 13:31:48,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 13:31:48,786 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 13:31:48,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 13:31:48,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 13:31:48,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 13:31:48,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 13:31:48,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 13:31:48,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 13:31:48,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 13:31:48,788 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 13:31:48,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 13:31:48,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 13:31:48,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 13:31:48,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 13:31:48,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:31:48,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 13:31:48,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 13:31:48,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 13:31:48,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 13:31:48,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 13:31:48,790 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 13:31:48,790 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 13:31:48,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 13:31:48,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 13:31:48,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 [2021-11-02 13:31:48,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 13:31:48,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 13:31:48,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 13:31:49,000 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 13:31:49,000 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 13:31:49,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-02 13:31:49,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a568b03f/80863a04cde84c698ceeecf99c8849cf/FLAG8d0baa380 [2021-11-02 13:31:49,573 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 13:31:49,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-02 13:31:49,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a568b03f/80863a04cde84c698ceeecf99c8849cf/FLAG8d0baa380 [2021-11-02 13:31:49,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a568b03f/80863a04cde84c698ceeecf99c8849cf [2021-11-02 13:31:49,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 13:31:49,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 13:31:49,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 13:31:49,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 13:31:49,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 13:31:49,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:31:49" (1/1) ... [2021-11-02 13:31:49,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e1e367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:49, skipping insertion in model container [2021-11-02 13:31:49,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:31:49" (1/1) ... [2021-11-02 13:31:49,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 13:31:49,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 13:31:50,143 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_unbounded_harness.i[4503,4516] [2021-11-02 13:31:50,149 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_unbounded_harness.i[4563,4576] [2021-11-02 13:31:50,175 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:31:50,180 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:31:50,711 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,712 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,712 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,712 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,713 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,724 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,726 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,728 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,729 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,731 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,734 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,735 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,736 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,006 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:31:51,008 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:31:51,010 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:31:51,011 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:31:51,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:31:51,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:31:51,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:31:51,014 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:31:51,017 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:31:51,021 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:31:51,138 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:31:51,427 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,427 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,450 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,452 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,458 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,458 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,472 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:31:51,542 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 13:31:51,568 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_unbounded_harness.i[4503,4516] [2021-11-02 13:31:51,568 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_unbounded_harness.i[4563,4576] [2021-11-02 13:31:51,570 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:31:51,571 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:31:51,595 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,596 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,596 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,596 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,597 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,606 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,606 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,606 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,632 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:31:51,633 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:31:51,634 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:31:51,634 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:31:51,635 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:31:51,635 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:31:51,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:31:51,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:31:51,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:31:51,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:31:51,666 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:31:51,731 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,732 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,770 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,771 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,780 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,781 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,781 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,782 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,782 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,783 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,783 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:51,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:31:51,961 INFO L208 MainTranslator]: Completed translation [2021-11-02 13:31:51,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:51 WrapperNode [2021-11-02 13:31:51,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 13:31:51,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 13:31:51,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 13:31:51,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 13:31:51,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:51" (1/1) ... [2021-11-02 13:31:52,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:51" (1/1) ... [2021-11-02 13:31:52,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 13:31:52,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 13:31:52,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 13:31:52,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 13:31:52,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:51" (1/1) ... [2021-11-02 13:31:52,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:51" (1/1) ... [2021-11-02 13:31:52,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:51" (1/1) ... [2021-11-02 13:31:52,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:51" (1/1) ... [2021-11-02 13:31:52,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:51" (1/1) ... [2021-11-02 13:31:52,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:51" (1/1) ... [2021-11-02 13:31:52,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:51" (1/1) ... [2021-11-02 13:31:52,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 13:31:52,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 13:31:52,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 13:31:52,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 13:31:52,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:51" (1/1) ... [2021-11-02 13:31:52,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:31:52,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:31:52,268 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) [2021-11-02 13:31:52,275 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 [2021-11-02 13:31:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-02 13:31:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 13:31:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 13:31:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 13:31:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 13:31:52,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 13:31:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-02 13:31:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 13:31:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-02 13:31:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 13:31:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 13:31:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 13:31:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-02 13:31:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 13:31:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 13:31:56,299 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !true; [2021-11-02 13:31:56,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 13:31:56,309 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2021-11-02 13:31:56,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:31:56 BoogieIcfgContainer [2021-11-02 13:31:56,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 13:31:56,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 13:31:56,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 13:31:56,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 13:31:56,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 01:31:49" (1/3) ... [2021-11-02 13:31:56,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42614478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:31:56, skipping insertion in model container [2021-11-02 13:31:56,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:51" (2/3) ... [2021-11-02 13:31:56,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42614478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:31:56, skipping insertion in model container [2021-11-02 13:31:56,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:31:56" (3/3) ... [2021-11-02 13:31:56,322 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_unbounded_harness.i [2021-11-02 13:31:56,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 13:31:56,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-02 13:31:56,369 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 13:31:56,374 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 [2021-11-02 13:31:56,374 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-02 13:31:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 110 states have (on average 1.3636363636363635) internal successors, (150), 112 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:31:56,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 13:31:56,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:31:56,404 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] [2021-11-02 13:31:56,405 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:31:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:31:56,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1956444402, now seen corresponding path program 1 times [2021-11-02 13:31:56,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:31:56,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669452137] [2021-11-02 13:31:56,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:31:56,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:31:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:31:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:31:56,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:31:56,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669452137] [2021-11-02 13:31:56,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669452137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:31:56,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:31:56,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 13:31:56,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996790545] [2021-11-02 13:31:56,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 13:31:56,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:31:56,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 13:31:56,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:31:56,986 INFO L87 Difference]: Start difference. First operand has 113 states, 110 states have (on average 1.3636363636363635) internal successors, (150), 112 states have internal predecessors, (150), 0 states have call successors, (0), 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 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:31:59,057 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 [] [2021-11-02 13:32:00,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:00,151 INFO L93 Difference]: Finished difference Result 221 states and 294 transitions. [2021-11-02 13:32:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 13:32:00,153 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-02 13:32:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:00,159 INFO L225 Difference]: With dead ends: 221 [2021-11-02 13:32:00,159 INFO L226 Difference]: Without dead ends: 106 [2021-11-02 13:32:00,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:32:00,164 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2843.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.60ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3109.76ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:00,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 136 Unknown, 0 Unchecked, 2.60ms Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 1 Unknown, 0 Unchecked, 3109.76ms Time] [2021-11-02 13:32:00,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-02 13:32:00,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-11-02 13:32:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 104 states have (on average 1.2403846153846154) internal successors, (129), 105 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2021-11-02 13:32:00,188 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 31 [2021-11-02 13:32:00,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:00,189 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2021-11-02 13:32:00,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2021-11-02 13:32:00,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 13:32:00,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:00,190 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] [2021-11-02 13:32:00,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 13:32:00,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:00,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:00,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1279980632, now seen corresponding path program 1 times [2021-11-02 13:32:00,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:00,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362695888] [2021-11-02 13:32:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:00,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:00,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:00,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362695888] [2021-11-02 13:32:00,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362695888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:00,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:00,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:00,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328641719] [2021-11-02 13:32:00,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:00,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:00,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:00,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:00,404 INFO L87 Difference]: Start difference. First operand 106 states and 129 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:02,442 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:32:05,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:05,460 INFO L93 Difference]: Finished difference Result 281 states and 346 transitions. [2021-11-02 13:32:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:32:05,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-02 13:32:05,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:05,462 INFO L225 Difference]: With dead ends: 281 [2021-11-02 13:32:05,463 INFO L226 Difference]: Without dead ends: 194 [2021-11-02 13:32:05,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.26ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:05,464 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 108 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4675.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.84ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4959.05ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:05,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 0 Invalid, 596 Unknown, 0 Unchecked, 11.84ms Time], IncrementalHoareTripleChecker [2 Valid, 593 Invalid, 1 Unknown, 0 Unchecked, 4959.05ms Time] [2021-11-02 13:32:05,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-02 13:32:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 109. [2021-11-02 13:32:05,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.233644859813084) internal successors, (132), 108 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:05,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-11-02 13:32:05,473 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 31 [2021-11-02 13:32:05,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:05,473 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-11-02 13:32:05,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:05,473 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2021-11-02 13:32:05,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 13:32:05,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:05,474 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] [2021-11-02 13:32:05,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 13:32:05,474 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:05,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:05,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1993918310, now seen corresponding path program 1 times [2021-11-02 13:32:05,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:05,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786228197] [2021-11-02 13:32:05,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:05,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:05,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:05,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786228197] [2021-11-02 13:32:05,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786228197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:05,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:05,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:05,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946998867] [2021-11-02 13:32:05,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:05,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:05,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:05,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:05,720 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:07,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:32:09,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:09,686 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2021-11-02 13:32:09,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:32:09,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-02 13:32:09,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:09,687 INFO L225 Difference]: With dead ends: 279 [2021-11-02 13:32:09,687 INFO L226 Difference]: Without dead ends: 194 [2021-11-02 13:32:09,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:09,689 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3555.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.54ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3895.77ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:09,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 371 Unknown, 0 Unchecked, 6.54ms Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 1 Unknown, 0 Unchecked, 3895.77ms Time] [2021-11-02 13:32:09,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-02 13:32:09,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 109. [2021-11-02 13:32:09,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 108 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) [2021-11-02 13:32:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2021-11-02 13:32:09,696 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 31 [2021-11-02 13:32:09,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:09,696 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2021-11-02 13:32:09,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2021-11-02 13:32:09,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 13:32:09,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:09,697 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] [2021-11-02 13:32:09,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 13:32:09,698 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:09,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:09,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1036449013, now seen corresponding path program 1 times [2021-11-02 13:32:09,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:09,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266397956] [2021-11-02 13:32:09,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:09,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:09,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:09,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:09,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266397956] [2021-11-02 13:32:09,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266397956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:09,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:09,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:09,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858513192] [2021-11-02 13:32:09,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:09,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:09,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:09,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:09,897 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:11,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:32:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:14,005 INFO L93 Difference]: Finished difference Result 275 states and 335 transitions. [2021-11-02 13:32:14,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:32:14,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-02 13:32:14,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:14,010 INFO L225 Difference]: With dead ends: 275 [2021-11-02 13:32:14,010 INFO L226 Difference]: Without dead ends: 194 [2021-11-02 13:32:14,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:14,012 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3668.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4036.04ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:14,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 382 Unknown, 0 Unchecked, 5.71ms Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 1 Unknown, 0 Unchecked, 4036.04ms Time] [2021-11-02 13:32:14,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-02 13:32:14,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 111. [2021-11-02 13:32:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.2201834862385321) internal successors, (133), 110 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 133 transitions. [2021-11-02 13:32:14,019 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 133 transitions. Word has length 32 [2021-11-02 13:32:14,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:14,020 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 133 transitions. [2021-11-02 13:32:14,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 133 transitions. [2021-11-02 13:32:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 13:32:14,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:14,021 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] [2021-11-02 13:32:14,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 13:32:14,021 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:14,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:14,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1718799183, now seen corresponding path program 1 times [2021-11-02 13:32:14,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:14,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123834646] [2021-11-02 13:32:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:14,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:14,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:14,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123834646] [2021-11-02 13:32:14,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123834646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:14,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:14,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:14,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015007457] [2021-11-02 13:32:14,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:14,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:14,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:14,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:14,232 INFO L87 Difference]: Start difference. First operand 111 states and 133 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:16,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:32:18,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:18,055 INFO L93 Difference]: Finished difference Result 205 states and 247 transitions. [2021-11-02 13:32:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:32:18,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-02 13:32:18,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:18,057 INFO L225 Difference]: With dead ends: 205 [2021-11-02 13:32:18,057 INFO L226 Difference]: Without dead ends: 192 [2021-11-02 13:32:18,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:18,058 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 97 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3497.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.50ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3769.84ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:18,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 0 Invalid, 412 Unknown, 0 Unchecked, 3.50ms Time], IncrementalHoareTripleChecker [1 Valid, 410 Invalid, 1 Unknown, 0 Unchecked, 3769.84ms Time] [2021-11-02 13:32:18,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-02 13:32:18,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 113. [2021-11-02 13:32:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 112 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) [2021-11-02 13:32:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2021-11-02 13:32:18,067 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 135 transitions. Word has length 34 [2021-11-02 13:32:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:18,067 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 135 transitions. [2021-11-02 13:32:18,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:18,067 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2021-11-02 13:32:18,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 13:32:18,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:18,068 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] [2021-11-02 13:32:18,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 13:32:18,068 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:18,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:18,069 INFO L85 PathProgramCache]: Analyzing trace with hash -216743141, now seen corresponding path program 1 times [2021-11-02 13:32:18,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:18,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303921219] [2021-11-02 13:32:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:18,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:18,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:18,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303921219] [2021-11-02 13:32:18,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303921219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:18,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:18,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:18,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285538478] [2021-11-02 13:32:18,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:18,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:18,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:18,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:18,222 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:20,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:32:22,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:22,664 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2021-11-02 13:32:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:32:22,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-02 13:32:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:22,665 INFO L225 Difference]: With dead ends: 126 [2021-11-02 13:32:22,665 INFO L226 Difference]: Without dead ends: 113 [2021-11-02 13:32:22,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:22,666 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4018.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4385.72ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:22,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 381 Unknown, 0 Unchecked, 4.25ms Time], IncrementalHoareTripleChecker [1 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 4385.72ms Time] [2021-11-02 13:32:22,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-02 13:32:22,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-11-02 13:32:22,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.201834862385321) internal successors, (131), 110 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) [2021-11-02 13:32:22,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2021-11-02 13:32:22,673 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 34 [2021-11-02 13:32:22,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:22,673 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2021-11-02 13:32:22,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:22,674 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2021-11-02 13:32:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-02 13:32:22,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:22,675 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] [2021-11-02 13:32:22,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 13:32:22,675 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:22,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:22,676 INFO L85 PathProgramCache]: Analyzing trace with hash 976987443, now seen corresponding path program 1 times [2021-11-02 13:32:22,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:22,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570722636] [2021-11-02 13:32:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:22,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:22,735 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:32:22,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670357165] [2021-11-02 13:32:22,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:22,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:32:22,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:32:22,738 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) [2021-11-02 13:32:22,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 13:32:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:23,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 13:32:23,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:32:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:23,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:32:23,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:23,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570722636] [2021-11-02 13:32:23,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:32:23,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670357165] [2021-11-02 13:32:23,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670357165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:23,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:23,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:32:23,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883676692] [2021-11-02 13:32:23,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:32:23,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:23,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:32:23,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:23,712 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:25,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:32:28,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:28,637 INFO L93 Difference]: Finished difference Result 243 states and 288 transitions. [2021-11-02 13:32:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:32:28,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-02 13:32:28,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:28,638 INFO L225 Difference]: With dead ends: 243 [2021-11-02 13:32:28,638 INFO L226 Difference]: Without dead ends: 178 [2021-11-02 13:32:28,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.92ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:32:28,639 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 149 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4409.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.69ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4826.59ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:28,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 0 Invalid, 590 Unknown, 0 Unchecked, 7.69ms Time], IncrementalHoareTripleChecker [6 Valid, 583 Invalid, 1 Unknown, 0 Unchecked, 4826.59ms Time] [2021-11-02 13:32:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-02 13:32:28,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2021-11-02 13:32:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 113 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2021-11-02 13:32:28,645 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 42 [2021-11-02 13:32:28,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:28,645 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2021-11-02 13:32:28,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:28,645 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2021-11-02 13:32:28,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-02 13:32:28,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:28,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:32:28,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 13:32:28,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:32:28,847 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:28,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:28,847 INFO L85 PathProgramCache]: Analyzing trace with hash 698461335, now seen corresponding path program 1 times [2021-11-02 13:32:28,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:28,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564511018] [2021-11-02 13:32:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:28,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:29,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:29,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564511018] [2021-11-02 13:32:29,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564511018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:29,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:29,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:32:29,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651290236] [2021-11-02 13:32:29,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:32:29,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:29,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:32:29,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:32:29,357 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:31,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:32:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:35,005 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2021-11-02 13:32:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:32:35,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-02 13:32:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:35,006 INFO L225 Difference]: With dead ends: 139 [2021-11-02 13:32:35,006 INFO L226 Difference]: Without dead ends: 120 [2021-11-02 13:32:35,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 392.76ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:32:35,007 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4930.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.70ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5379.43ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:35,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 698 Unknown, 0 Unchecked, 6.70ms Time], IncrementalHoareTripleChecker [2 Valid, 695 Invalid, 1 Unknown, 0 Unchecked, 5379.43ms Time] [2021-11-02 13:32:35,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-02 13:32:35,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2021-11-02 13:32:35,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 115 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) [2021-11-02 13:32:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2021-11-02 13:32:35,013 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 44 [2021-11-02 13:32:35,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:35,013 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2021-11-02 13:32:35,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:35,014 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2021-11-02 13:32:35,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-02 13:32:35,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:35,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:32:35,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 13:32:35,015 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:35,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1821498599, now seen corresponding path program 1 times [2021-11-02 13:32:35,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:35,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263484434] [2021-11-02 13:32:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:35,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:35,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:35,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263484434] [2021-11-02 13:32:35,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263484434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:35,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:35,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:35,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102990633] [2021-11-02 13:32:35,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:35,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:35,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:35,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:35,211 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:37,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:32:39,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:39,151 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2021-11-02 13:32:39,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:32:39,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-02 13:32:39,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:39,154 INFO L225 Difference]: With dead ends: 138 [2021-11-02 13:32:39,154 INFO L226 Difference]: Without dead ends: 114 [2021-11-02 13:32:39,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:39,155 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3509.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.40ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3892.35ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:39,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 252 Unknown, 0 Unchecked, 2.40ms Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 1 Unknown, 0 Unchecked, 3892.35ms Time] [2021-11-02 13:32:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-02 13:32:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-11-02 13:32:39,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1785714285714286) internal successors, (132), 113 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2021-11-02 13:32:39,159 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 44 [2021-11-02 13:32:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:39,159 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2021-11-02 13:32:39,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:39,159 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2021-11-02 13:32:39,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 13:32:39,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:39,160 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] [2021-11-02 13:32:39,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 13:32:39,160 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:39,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:39,160 INFO L85 PathProgramCache]: Analyzing trace with hash -258137806, now seen corresponding path program 1 times [2021-11-02 13:32:39,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:39,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069764704] [2021-11-02 13:32:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:39,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:39,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:39,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069764704] [2021-11-02 13:32:39,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069764704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:39,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:39,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:32:39,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013629464] [2021-11-02 13:32:39,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:32:39,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:39,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:32:39,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:39,450 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:41,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:32:45,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:45,073 INFO L93 Difference]: Finished difference Result 135 states and 155 transitions. [2021-11-02 13:32:45,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:32:45,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-02 13:32:45,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:45,074 INFO L225 Difference]: With dead ends: 135 [2021-11-02 13:32:45,074 INFO L226 Difference]: Without dead ends: 115 [2021-11-02 13:32:45,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 360.61ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:32:45,075 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4752.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.05ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5333.26ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:45,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 446 Unknown, 0 Unchecked, 5.05ms Time], IncrementalHoareTripleChecker [8 Valid, 437 Invalid, 1 Unknown, 0 Unchecked, 5333.26ms Time] [2021-11-02 13:32:45,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-02 13:32:45,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2021-11-02 13:32:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1607142857142858) internal successors, (130), 113 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) [2021-11-02 13:32:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-11-02 13:32:45,079 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 46 [2021-11-02 13:32:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:45,080 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-11-02 13:32:45,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:45,080 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-11-02 13:32:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 13:32:45,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:45,080 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] [2021-11-02 13:32:45,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 13:32:45,080 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:45,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:45,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1993311935, now seen corresponding path program 1 times [2021-11-02 13:32:45,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:45,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625677135] [2021-11-02 13:32:45,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:45,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:45,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:45,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625677135] [2021-11-02 13:32:45,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625677135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:45,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:45,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:32:45,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734491678] [2021-11-02 13:32:45,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:32:45,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:45,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:32:45,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:32:45,543 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2021-11-02 13:32:47,585 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:32:51,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:51,472 INFO L93 Difference]: Finished difference Result 146 states and 164 transitions. [2021-11-02 13:32:51,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:32:51,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 [2021-11-02 13:32:51,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:51,473 INFO L225 Difference]: With dead ends: 146 [2021-11-02 13:32:51,473 INFO L226 Difference]: Without dead ends: 118 [2021-11-02 13:32:51,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 388.94ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:32:51,474 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5236.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.59ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5665.11ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:51,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 742 Unknown, 0 Unchecked, 6.59ms Time], IncrementalHoareTripleChecker [5 Valid, 736 Invalid, 1 Unknown, 0 Unchecked, 5665.11ms Time] [2021-11-02 13:32:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-02 13:32:51,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2021-11-02 13:32:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1403508771929824) internal successors, (130), 115 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) [2021-11-02 13:32:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2021-11-02 13:32:51,479 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 47 [2021-11-02 13:32:51,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:51,479 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2021-11-02 13:32:51,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2021-11-02 13:32:51,479 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2021-11-02 13:32:51,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 13:32:51,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:51,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:32:51,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 13:32:51,481 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:51,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:51,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2021436160, now seen corresponding path program 1 times [2021-11-02 13:32:51,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:51,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649797266] [2021-11-02 13:32:51,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:51,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:51,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:32:51,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548149157] [2021-11-02 13:32:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:51,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:32:51,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:32:51,537 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) [2021-11-02 13:32:51,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 13:32:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:52,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 13:32:52,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:32:52,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:52,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:32:52,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:52,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649797266] [2021-11-02 13:32:52,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:32:52,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548149157] [2021-11-02 13:32:52,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548149157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:52,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:52,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:52,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723976640] [2021-11-02 13:32:52,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:52,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:52,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:52,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:52,406 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:54,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:32:56,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:56,565 INFO L93 Difference]: Finished difference Result 183 states and 203 transitions. [2021-11-02 13:32:56,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:32:56,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-02 13:32:56,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:56,566 INFO L225 Difference]: With dead ends: 183 [2021-11-02 13:32:56,566 INFO L226 Difference]: Without dead ends: 116 [2021-11-02 13:32:56,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.97ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:56,567 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3717.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4118.91ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:56,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 357 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [1 Valid, 355 Invalid, 1 Unknown, 0 Unchecked, 4118.91ms Time] [2021-11-02 13:32:56,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-02 13:32:56,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2021-11-02 13:32:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 112 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:56,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2021-11-02 13:32:56,571 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 60 [2021-11-02 13:32:56,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:56,571 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2021-11-02 13:32:56,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:32:56,572 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2021-11-02 13:32:56,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 13:32:56,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:56,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:32:56,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 13:32:56,773 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,SelfDestructingSolverStorable11 [2021-11-02 13:32:56,773 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:56,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1218210049, now seen corresponding path program 1 times [2021-11-02 13:32:56,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:56,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237490176] [2021-11-02 13:32:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:56,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:56,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:32:56,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864004439] [2021-11-02 13:32:56,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:56,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:32:56,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:32:56,845 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) [2021-11-02 13:32:56,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 13:32:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:57,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 13:32:57,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:32:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:57,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:32:57,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:57,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237490176] [2021-11-02 13:32:57,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:32:57,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864004439] [2021-11-02 13:32:57,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864004439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:57,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:57,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:32:57,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277356392] [2021-11-02 13:32:57,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:32:57,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:57,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:32:57,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:57,659 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:33:00,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:33:03,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:33:03,262 INFO L93 Difference]: Finished difference Result 214 states and 232 transitions. [2021-11-02 13:33:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:33:03,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-02 13:33:03,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:33:03,263 INFO L225 Difference]: With dead ends: 214 [2021-11-02 13:33:03,263 INFO L226 Difference]: Without dead ends: 182 [2021-11-02 13:33:03,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.91ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:33:03,264 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 133 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4966.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.00ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5495.65ms IncrementalHoareTripleChecker+Time [2021-11-02 13:33:03,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 0 Invalid, 534 Unknown, 0 Unchecked, 6.00ms Time], IncrementalHoareTripleChecker [6 Valid, 527 Invalid, 1 Unknown, 0 Unchecked, 5495.65ms Time] [2021-11-02 13:33:03,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-02 13:33:03,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 116. [2021-11-02 13:33:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1228070175438596) internal successors, (128), 115 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:33:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2021-11-02 13:33:03,268 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 63 [2021-11-02 13:33:03,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:33:03,268 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2021-11-02 13:33:03,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:33:03,268 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2021-11-02 13:33:03,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 13:33:03,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:33:03,269 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] [2021-11-02 13:33:03,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 13:33:03,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:33:03,488 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:33:03,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:33:03,488 INFO L85 PathProgramCache]: Analyzing trace with hash -250619011, now seen corresponding path program 1 times [2021-11-02 13:33:03,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:33:03,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044503263] [2021-11-02 13:33:03,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:03,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:33:03,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:33:03,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430611487] [2021-11-02 13:33:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:03,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:33:03,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:33:03,546 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) [2021-11-02 13:33:03,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 13:33:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:33:04,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 13:33:04,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:33:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:33:04,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:33:04,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:33:04,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044503263] [2021-11-02 13:33:04,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:33:04,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430611487] [2021-11-02 13:33:04,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430611487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:33:04,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:33:04,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:33:04,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365890901] [2021-11-02 13:33:04,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:33:04,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:33:04,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:33:04,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:33:04,366 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:33:06,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:33:08,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:33:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:33:09,048 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2021-11-02 13:33:09,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:33:09,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-02 13:33:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:33:09,049 INFO L225 Difference]: With dead ends: 148 [2021-11-02 13:33:09,064 INFO L226 Difference]: Without dead ends: 116 [2021-11-02 13:33:09,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:33:09,065 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4236.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4629.17ms IncrementalHoareTripleChecker+Time [2021-11-02 13:33:09,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 351 Unknown, 0 Unchecked, 2.40ms Time], IncrementalHoareTripleChecker [0 Valid, 350 Invalid, 1 Unknown, 0 Unchecked, 4629.17ms Time] [2021-11-02 13:33:09,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-02 13:33:09,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2021-11-02 13:33:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.117117117117117) internal successors, (124), 112 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:33:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2021-11-02 13:33:09,069 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 65 [2021-11-02 13:33:09,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:33:09,069 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2021-11-02 13:33:09,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:33:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2021-11-02 13:33:09,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 13:33:09,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:33:09,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:33:09,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 13:33:09,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:33:09,271 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:33:09,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:33:09,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1795192040, now seen corresponding path program 1 times [2021-11-02 13:33:09,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:33:09,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736603558] [2021-11-02 13:33:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:09,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:33:09,331 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:33:09,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955603243] [2021-11-02 13:33:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:09,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:33:09,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:33:09,333 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) [2021-11-02 13:33:09,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 13:33:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:33:09,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 2745 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 13:33:09,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:33:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:33:10,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:33:10,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:33:10,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736603558] [2021-11-02 13:33:10,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:33:10,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955603243] [2021-11-02 13:33:10,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955603243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:33:10,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:33:10,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:33:10,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787659291] [2021-11-02 13:33:10,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:33:10,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:33:10,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:33:10,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:33:10,285 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:33:12,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:33:15,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:33:15,483 INFO L93 Difference]: Finished difference Result 217 states and 232 transitions. [2021-11-02 13:33:15,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:33:15,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-02 13:33:15,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:33:15,484 INFO L225 Difference]: With dead ends: 217 [2021-11-02 13:33:15,484 INFO L226 Difference]: Without dead ends: 184 [2021-11-02 13:33:15,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 132.68ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:33:15,485 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4653.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.28ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5117.14ms IncrementalHoareTripleChecker+Time [2021-11-02 13:33:15,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 494 Unknown, 0 Unchecked, 5.28ms Time], IncrementalHoareTripleChecker [1 Valid, 492 Invalid, 1 Unknown, 0 Unchecked, 5117.14ms Time] [2021-11-02 13:33:15,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-02 13:33:15,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 116. [2021-11-02 13:33:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1140350877192982) internal successors, (127), 115 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:33:15,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2021-11-02 13:33:15,490 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 69 [2021-11-02 13:33:15,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:33:15,490 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2021-11-02 13:33:15,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:33:15,490 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2021-11-02 13:33:15,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 13:33:15,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:33:15,491 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] [2021-11-02 13:33:15,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 13:33:15,691 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,SelfDestructingSolverStorable14 [2021-11-02 13:33:15,691 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:33:15,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:33:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2069581868, now seen corresponding path program 1 times [2021-11-02 13:33:15,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:33:15,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604511989] [2021-11-02 13:33:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:15,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:33:15,751 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:33:15,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393790668] [2021-11-02 13:33:15,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:15,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:33:15,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:33:15,752 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) [2021-11-02 13:33:15,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 13:33:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:33:16,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 13:33:16,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:33:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:33:16,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:33:16,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:33:16,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604511989] [2021-11-02 13:33:16,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:33:16,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393790668] [2021-11-02 13:33:16,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393790668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:33:16,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:33:16,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:33:16,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063675981] [2021-11-02 13:33:16,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:33:16,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:33:16,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:33:16,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:33:16,687 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:33:18,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:33:21,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:33:21,748 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2021-11-02 13:33:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:33:21,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-02 13:33:21,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:33:21,754 INFO L225 Difference]: With dead ends: 149 [2021-11-02 13:33:21,754 INFO L226 Difference]: Without dead ends: 111 [2021-11-02 13:33:21,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 177.02ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:33:21,755 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4503.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4937.73ms IncrementalHoareTripleChecker+Time [2021-11-02 13:33:21,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 462 Unknown, 0 Unchecked, 3.81ms Time], IncrementalHoareTripleChecker [0 Valid, 461 Invalid, 1 Unknown, 0 Unchecked, 4937.73ms Time] [2021-11-02 13:33:21,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-02 13:33:21,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-11-02 13:33:21,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.1009174311926606) internal successors, (120), 110 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:33:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2021-11-02 13:33:21,760 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 71 [2021-11-02 13:33:21,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:33:21,760 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2021-11-02 13:33:21,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:33:21,761 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2021-11-02 13:33:21,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 13:33:21,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:33:21,761 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] [2021-11-02 13:33:21,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 13:33:21,962 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,SelfDestructingSolverStorable15 [2021-11-02 13:33:21,964 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:33:21,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:33:21,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1347080187, now seen corresponding path program 1 times [2021-11-02 13:33:21,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:33:21,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338894979] [2021-11-02 13:33:21,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:21,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:33:22,024 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:33:22,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54620083] [2021-11-02 13:33:22,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:22,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:33:22,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:33:22,026 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) [2021-11-02 13:33:22,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15